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Sinuses and DHA
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Primum Sapienti
May 30, 2021, 12:22:14 AM5/30/21
to
https://scienceblogs.com/pharyngula/2013/04/28/oh-no-not-the-aquatic-ape-hypothesis-again
I'm speaking of the Aquatic Ape Hypothesis.
The Guardian is running yet another article on the goofy idea that we evolved
from swimming apes, and that all of the unique features of our species are a
product of adaptations to an aquatic lifestyle. It's complete nonsense:
there is
no evidence of long-term residence of our species in the water, and the
proponents tend to invent the most outrageous panglossian explanations,
fitting data to the hypotheses instead of the other way around. At least this
story has one new contrivance I'd never heard before. Take it away, Rhys
Evans!
"Humans have particularly large sinuses, spaces in the skull between our
cheeks,
noses and foreheads," he added. "But why do we have empty spaces in our
heads? It makes no sense until we consider the evolutionary perspective. Then
it becomes clear: our sinuses acted as buoyancy aids that helped keep our
heads
above water."
<stunned silence>
But…but…but every mammal, as far as I know, has a head full of sinuses!
...
I also wonder if these people ever go swimming. Somehow, my sinuses don't
seem
to work very effectively as water wings.
Michael Crawford offers a familiar absurdity: the nutritional argument
from docosahexaenoic acid (DHA). DHA is one of those omega-3 fatty acids
that is used
to build brains, and it's found in high concentration in lots of seafood.
The true
zealots consider this indisputable proof that we evolved by eating lots of
clams.
"It boosts brain growth in mammals. That is why a dolphin has a much
bigger brain
than a zebra, though they have roughly the same body sizes. The dolphin
has a diet
rich in DHA. The crucial point is that without a high DHA diet from
seafood we could
not have developed our big brains. We got smart from eating fish and
living in water.
"More to the point, we now face a world in which sources of DHA – our fish
stocks – are threatened. That has crucial consequences for our species.
Without
plentiful DHA, we face a future of increased mental illness and intellectual
deterioration. We need to face up to that urgently. That is the real
lesson of the
aquatic ape theory."
An experiment: let's feed zebras bucketloads of DHA, and watch their brains
expand to 3-5 pound blobs that give them advanced communications abilities!
Oh, wait. It won't work. There's such a thing as neuroplasticity, but
brains aren't
quite that flexible. I'm willing to believe that increased availability of
the building
blocks of brains might remove a constraint on growth, but not that it's
causal, as
Crawford claims. Even feeding many generations of zebras DHA isn't going to
affect brain size much at all…and there's no evidence that terrestrial
herbivores
are in any way limited by the availability of DHA.
...
There are many people around the world who don't eat seafood — there are
entire ethnic groups who haven't touched the stuff for generations. There are
big-brained primate species that virtually never eat fish. How do they
survive?
How do they avoid "mental illness and intellectual deterioration"? They
get it
from other dietary sources.
littor...@gmail.com
May 30, 2021, 5:25:08 AM5/30/21
to
Human frontal & maxillary paranasal sinuses were perfectly arranged around the projecting nostrils in our littoral ancetors:
OI, BIG NOSE !
New Scientist 2782 p 69 Lastword 16 October 2010
Why do humans evolve external noses that don’t seem to serve any useful purpose – our smelling sensors are inside the head. Our nose is vulnerable to damage, and the majority of primates and other mammals manage with relatively flat faces. Traditional explanations are that the nose protects against dry air, hot air, cold air, dusty air, whatever air, but most savannah mammals have no external noses, and polar animals such as arctic foxes or hares tend to evolve shorter extremities including flatter noses (Allen’s Rule), not larger as the Neanderthal protruding nose.
The answer isn’t so difficult if we simply consider humans like other mammals.
An external nose is seen in elephant seals, hooded seals, tapirs, elephants, swine and, among primates, in the mangrove-dwelling proboscis monkeys. Various, often mutually compatible functions, have been proposed, such as sexual display (in male hooded and elephant seals or proboscis monkeys), manipulation of food (in elephants, tapirs and swine), a snorkel (elephants, proboscis monkeys) and as a nose-closing aid during diving (in most of these animals). These mammals spend a lot of time at the margins of land and water. Possible functions of an external nose in creatures evolving into aquatic ones are obvious and match those listed above in many cases. They can initially act as a nose closure, a snorkel, to keep water out, to dig in wet soil for food, and so on. Afterwards, these external noses can also become co-opted for other functions, such as sexual display (visual as well as auditory) in hooded and elephant seals and proboscis monkeys.
But what does this have to do with human evolution?
The earliest known Homo fossils outside Africa – such as those at Mojokerto in Java and Dmanisi in Georgia – are about 1.8 million years old. The easiest way for them to have spread to other continents, and to islands such as Java, is along the coasts, and from there inland along rivers. During the glacial periods of the Pleistocene – the ice age cycles that ran from about 1.8 million to 12,000 years ago – most coasts were about 100 metres below the present-day sea level, so we don’t know whether or when Homo populations lived there. But coasts and riversides are full of shellfish and other foods that are easily collected and digested by smart, handy and tool-using “apes”, and are rich in potential brain-boosting nutrients such as docosahexaenoic acid (DHA).
If Pleistocene Homo spread along the coasts, beachcombing, wading and diving for seafoods as Polynesian islanders still do, this could explain why Homo erectus evolved larger brains (aided by DHA) and larger noses (because of their part-time diving). This littoral intermezzo could help to explain not only why we like to have our holidays at tropical beaches, eating shrimps and coconuts, but also why we became fat and furless bipeds with long legs, large brains and big noses.
OI, BIG NOSE !
New Scientist 2782 p 69 Lastword 16 October 2010
Why do humans evolve external noses that don’t seem to serve any useful purpose – our smelling sensors are inside the head. Our nose is vulnerable to damage, and the majority of primates and other mammals manage with relatively flat faces. Traditional explanations are that the nose protects against dry air, hot air, cold air, dusty air, whatever air, but most savannah mammals have no external noses, and polar animals such as arctic foxes or hares tend to evolve shorter extremities including flatter noses (Allen’s Rule), not larger as the Neanderthal protruding nose.
The answer isn’t so difficult if we simply consider humans like other mammals.
An external nose is seen in elephant seals, hooded seals, tapirs, elephants, swine and, among primates, in the mangrove-dwelling proboscis monkeys. Various, often mutually compatible functions, have been proposed, such as sexual display (in male hooded and elephant seals or proboscis monkeys), manipulation of food (in elephants, tapirs and swine), a snorkel (elephants, proboscis monkeys) and as a nose-closing aid during diving (in most of these animals). These mammals spend a lot of time at the margins of land and water. Possible functions of an external nose in creatures evolving into aquatic ones are obvious and match those listed above in many cases. They can initially act as a nose closure, a snorkel, to keep water out, to dig in wet soil for food, and so on. Afterwards, these external noses can also become co-opted for other functions, such as sexual display (visual as well as auditory) in hooded and elephant seals and proboscis monkeys.
But what does this have to do with human evolution?
The earliest known Homo fossils outside Africa – such as those at Mojokerto in Java and Dmanisi in Georgia – are about 1.8 million years old. The easiest way for them to have spread to other continents, and to islands such as Java, is along the coasts, and from there inland along rivers. During the glacial periods of the Pleistocene – the ice age cycles that ran from about 1.8 million to 12,000 years ago – most coasts were about 100 metres below the present-day sea level, so we don’t know whether or when Homo populations lived there. But coasts and riversides are full of shellfish and other foods that are easily collected and digested by smart, handy and tool-using “apes”, and are rich in potential brain-boosting nutrients such as docosahexaenoic acid (DHA).
If Pleistocene Homo spread along the coasts, beachcombing, wading and diving for seafoods as Polynesian islanders still do, this could explain why Homo erectus evolved larger brains (aided by DHA) and larger noses (because of their part-time diving). This littoral intermezzo could help to explain not only why we like to have our holidays at tropical beaches, eating shrimps and coconuts, but also why we became fat and furless bipeds with long legs, large brains and big noses.
littor...@gmail.com
May 30, 2021, 5:50:23 AM5/30/21
to
> https://scienceblogs.com/pharyngula/2013/04/28/oh-no-not-the-aquatic-ape-hypothesis-again
> ... Rhys Evans:
-H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
-H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
-H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
Obvious for everybody who understands a bit of human anatomy & physiology.
> ... Rhys Evans:
> "Humans have particularly large sinuses, spaces in the skull between our
> cheeks,
> noses and foreheads," he added. "But why do we have empty spaces in our
> heads? It makes no sense until we consider the evolutionary perspective. Then
> it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> heads above water."
More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> cheeks,
> noses and foreheads," he added. "But why do we have empty spaces in our
> heads? It makes no sense until we consider the evolutionary perspective. Then
> it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> heads above water."
-H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
-H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
-H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
Obvious for everybody who understands a bit of human anatomy & physiology.
DD'eDeN aka note/nickname/alas_my_loves
May 31, 2021, 7:24:46 AM5/31/21
to
C. H. Engelbrecht
May 31, 2021, 7:52:36 AM5/31/21
to
I Envy JTEM
May 31, 2021, 11:24:16 AM5/31/21
to
C. H. Engelbrecht wrote:
> Stone age people didn't lose their teeth. We have modern day processed
> sugar to thank for that.
Fruits, honey or even just eating over time can easily cause tooth
> Stone age people didn't lose their teeth. We have modern day processed
> sugar to thank for that.
decay. People often used their teeth for holding, pulling & cutting --
as a tool. There has been tooth decay as long as there have been
people.
Tooth decay was a major killer in the past. Infections would set in,
spread and people died. The ancient egyptians didn't have sugar,
for example, and mummies have been found whose cause of death
was apparently tooth decay (infection).
The sample size of Neanderthals and their contemporaries is way
too small, and for the most part they didn't live very long, which is
why we don't see so much death by tooth decay.
-- --
https://jtem.tumblr.com/post/652630730735812608
C. H. Engelbrecht
May 31, 2021, 11:49:27 AM5/31/21
to
mandag den 31. maj 2021 kl. 17.24.16 UTC+2 skrev I Envy JTEM:
> C. H. Engelbrecht wrote:
>
> > Stone age people didn't lose their teeth. We have modern day processed
> > sugar to thank for that.
> Fruits, honey or even just eating over time can easily cause tooth
> decay. People often used their teeth for holding, pulling & cutting --
> as a tool. There has been tooth decay as long as there have been
> people.
You know what killed Steve Jobs? A diet of 100 % fruit, nuts and seeds. Jobs died of pancreatic cancer.
> C. H. Engelbrecht wrote:
>
> > Stone age people didn't lose their teeth. We have modern day processed
> > sugar to thank for that.
> Fruits, honey or even just eating over time can easily cause tooth
> decay. People often used their teeth for holding, pulling & cutting --
> as a tool. There has been tooth decay as long as there have been
> people.
Ashton Kutcher were to portray him in a film, and he decided to go on that 100 % fruit diet in a fit of Method acting. Kutcher ended up being hospitalized with a severe inflammation of his pancreas.
Draw your own conclusion on that one.
> Tooth decay was a major killer in the past. Infections would set in,
> spread and people died. The ancient egyptians didn't have sugar,
> for example, and mummies have been found whose cause of death
> was apparently tooth decay (infection).
And the ancient Egyptians did have access to sugar, some of said mummies were embalmed in honey. Likely because natural honey never spoils and that was seen as a sign of this immortality thing the Egyptians were so nuts about. (A couple of crazy archeologists actually tried to eat some of the honey found in pots in King Tut's tomb, and they claimed it was perfectly sweet and edible after three millenia!)
> The sample size of Neanderthals and their contemporaries is way
> too small, and for the most part they didn't live very long, which is
> why we don't see so much death by tooth decay.
I Envy JTEM
Jun 1, 2021, 12:54:23 AM6/1/21
to
C. H. Engelbrecht wrote:
> > The sample size of Neanderthals and their contemporaries is way
> > too small, and for the most part they didn't live very long, which is
> > why we don't see so much death by tooth decay.
> Either that, or they ate a lot of seafood, which corrode human teeth
> to a much lesser degree.
Neanderthals weren't one thing. We know there were populations of
> > The sample size of Neanderthals and their contemporaries is way
> > too small, and for the most part they didn't live very long, which is
> > why we don't see so much death by tooth decay.
> Either that, or they ate a lot of seafood, which corrode human teeth
> to a much lesser degree.
Neanderthals that relied heavily on an aquatic diet. And and we know
that there were others that were super carnivores. We may actually be
descended from the more aquatic populations but even THAT doesn't
mean they were the more numerous.
Look. When I say that paleo anthropology is not a real science it isn't
just talk, I'm not speaking out of bitterness I am stating an obvious
fact. And in this case the fact is that this so called "Science" looks
where it's easy to look -- or, FAR MORE LIKELY, where others have found
Neanderthal remains/habitation sites -- instead of where the land used
to be but the ocean can now be found.
"The light over here is better," as the punchline to an old joke says.
Pale anthropology searches where the light is best, not where our ancestors
most likely lived.
So we don't have a good, or fair or halfway decent sampling to go by.
-- --
https://jtem.tumblr.com/post/652630730735812608
littor...@gmail.com
Jun 1, 2021, 5:38:26 PM6/1/21
to
Op maandag 31 mei 2021 om 13:24:46 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > ... Rhys Evans:
> > > "Humans have particularly large sinuses, spaces in the skull between our
> > > cheeks,
> > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > heads above water."
> > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
Do you really believe that neandertals had less teeth than erectus???
It's not difficult, even for you:
-PNS Hn>Hs>He,
-POS He>Hn>Hs,
IOW, biology shows
- He was littoral,
- Hn dived a lot for freshwater foods (seasonally following the river to the coast?)
- Hs showed a shift from diving to wading-walking.
This is confirmed by everything we know, google
"coastal dispersal Pleistocene Homo PPT".
And it makes it clear that
"The nowadays popular ideas about Pleistocene human ancestors running in open
plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe
coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed."
(Hum.Evol.28:237-266, 2013)
> > > ... Rhys Evans:
> > > "Humans have particularly large sinuses, spaces in the skull between our
> > > cheeks,
> > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > heads above water."
> > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > Obvious for everybody who understands a bit of human anatomy & physiology.
> My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
:-D Keep listening to your dentist, my boy.
> > Obvious for everybody who understands a bit of human anatomy & physiology.
> My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
Do you really believe that neandertals had less teeth than erectus???
It's not difficult, even for you:
-PNS Hn>Hs>He,
-POS He>Hn>Hs,
IOW, biology shows
- He was littoral,
- Hn dived a lot for freshwater foods (seasonally following the river to the coast?)
- Hs showed a shift from diving to wading-walking.
This is confirmed by everything we know, google
"coastal dispersal Pleistocene Homo PPT".
And it makes it clear that
"The nowadays popular ideas about Pleistocene human ancestors running in open
plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe
coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed."
(Hum.Evol.28:237-266, 2013)
littor...@gmail.com
Jun 1, 2021, 5:44:28 PM6/1/21
to
Op dinsdag 1 juni 2021 om 06:54:23 UTC+2 schreef I Envy JTEM:
This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
Hn isotopic data were simply intermediate between freshwater & marine foods.
This once more confirms that Hn might have seasonally followed the river to the coast.
Google (also references) "coastal dispersal Pleistocene Homo PPT verhaegen".
Supercarnivorous neandertals is as ridiculous as antelope-running erectus.
______
> C. H. Engelbrecht wrote:
>
> > > The sample size of Neanderthals and their contemporaries is way
> > > too small, and for the most part they didn't live very long, which is
> > > why we don't see so much death by tooth decay.
>
> > Either that, or they ate a lot of seafood, which corrode human teeth
> > to a much lesser degree.
> Neanderthals weren't one thing. We know there were populations of
> Neanderthals that relied heavily on an aquatic diet. And and we know
> that there were others that were super carnivores.
No!!!
>
> > > The sample size of Neanderthals and their contemporaries is way
> > > too small, and for the most part they didn't live very long, which is
> > > why we don't see so much death by tooth decay.
>
> > Either that, or they ate a lot of seafood, which corrode human teeth
> > to a much lesser degree.
> Neanderthals weren't one thing. We know there were populations of
> Neanderthals that relied heavily on an aquatic diet. And and we know
> that there were others that were super carnivores.
This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
Hn isotopic data were simply intermediate between freshwater & marine foods.
This once more confirms that Hn might have seasonally followed the river to the coast.
Google (also references) "coastal dispersal Pleistocene Homo PPT verhaegen".
Supercarnivorous neandertals is as ridiculous as antelope-running erectus.
______
DD'eDeN aka note/nickname/alas_my_loves
Jun 1, 2021, 8:38:25 PM6/1/21
to
On Tuesday, June 1, 2021 at 5:38:26 PM UTC-4, littor...@gmail.com wrote:
> Op maandag 31 mei 2021 om 13:24:46 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > ... Rhys Evans:
> > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > cheeks,
> > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > heads above water."
>
> > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > Obvious for everybody who understands a bit of human anatomy & physiology.
>
> > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
> :-D Keep listening to your dentist, my boy.
He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> Op maandag 31 mei 2021 om 13:24:46 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > ... Rhys Evans:
> > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > cheeks,
> > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > heads above water."
>
> > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > Obvious for everybody who understands a bit of human anatomy & physiology.
>
> > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
> :-D Keep listening to your dentist, my boy.
https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
littor...@gmail.com
Jun 2, 2021, 12:06:18 PM6/2/21
to
Op woensdag 2 juni 2021 om 02:38:25 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > ... Rhys Evans:
> > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > cheeks,
> > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > heads above water."
> > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > Obvious for everybody who understands a bit of human anatomy & physiology.
> > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
> > :-D Keep listening to your dentist, my boy.
> He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
Ridiculous. That man is an antelope runner, IOW, wrong:
"The nowadays popular ideas about Pleistocene human ancestors running in open plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed" (Hum.Evol.28:237-266, 2013).
Grow up, DD, intead of wasting our time.
There's 0 evidence for some NO effect.
And do you now deny that air is lighter than water??
PNSs are simply what the word says: air around the nasal entrance.
Do you really believe that neandertals had less teeth than erectus???
It's not difficult, even for you:
--PNS Hn>Hs>He,
--POS He>Hn>Hs,
IOW, biology shows
- early-Pleist.He was littoral,
> > > > > ... Rhys Evans:
> > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > cheeks,
> > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > heads above water."
> > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > Obvious for everybody who understands a bit of human anatomy & physiology.
> > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
> > :-D Keep listening to your dentist, my boy.
> He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
"The nowadays popular ideas about Pleistocene human ancestors running in open plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed" (Hum.Evol.28:237-266, 2013).
Grow up, DD, intead of wasting our time.
There's 0 evidence for some NO effect.
And do you now deny that air is lighter than water??
PNSs are simply what the word says: air around the nasal entrance.
Do you really believe that neandertals had less teeth than erectus???
It's not difficult, even for you:
--POS He>Hn>Hs,
IOW, biology shows
- early-Pleist.He was littoral,
- Hn dived a lot for freshwater foods (seasonally following the river to the coast?)
- late-Pleist.Hs showed a shift from diving to wading-walking.
DD'eDeN aka note/nickname/alas_my_loves
Jun 2, 2021, 2:08:55 PM6/2/21
to
On Wednesday, June 2, 2021 at 12:06:18 PM UTC-4, littor...@gmail.com wrote:
> Op woensdag 2 juni 2021 om 02:38:25 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > > ... Rhys Evans:
> > > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > > cheeks,
> > > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > > heads above water."
>
> > > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > > Obvious for everybody who understands a bit of human anatomy & physiology.
>
> > > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
>
> > > :-D Keep listening to your dentist, my boy.
>
> > He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> > https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
> Ridiculous.
?
> Op woensdag 2 juni 2021 om 02:38:25 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > > ... Rhys Evans:
> > > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > > cheeks,
> > > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > > heads above water."
>
> > > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > > Obvious for everybody who understands a bit of human anatomy & physiology.
>
> > > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
>
> > > :-D Keep listening to your dentist, my boy.
>
> > He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> > https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
> Ridiculous.
That man is an antelope runner, IOW, wrong:
What does your favorite strawman have to do with my dentist?
> "The nowadays popular ideas about Pleistocene human ancestors running in open plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed" (Hum.Evol.28:237-266, 2013).
> Grow up, DD, intead of wasting our time.
> There's 0 evidence for some NO effect.
> And do you now deny that air is lighter than water??
> PNSs are simply what the word says: air around the nasal entrance.
littor...@gmail.com
Jun 3, 2021, 6:44:30 PM6/3/21
to
Op woensdag 2 juni 2021 om 20:08:55 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > > > ... Rhys Evans:
> > > > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > > > cheeks,
> > > > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > > > heads above water."
> > > > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > > > Obvious for everybody who understands a bit of human anatomy & physiology.
> > > > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
> > > > :-D Keep listening to your dentist, my boy.
> > > He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> > > https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
> > Ridiculous. That man is an antelope runner, IOW, wrong:
> ?
Endurance running erectus = stupid.
> What does your favorite strawman have to do with my dentist?
0
> > "The nowadays popular ideas about Pleistocene human ancestors running in open plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed" (Hum.Evol.28:237-266, 2013).
> What does your favorite strawman have to do with my dentist?
0
> > Grow up, DD, intead of wasting our time.
> What does your favorite strawman have to do with my dentist?
0
> > There's 0 evidence for some NO effect.
> Nitic oxide is antimicrobial in the body.
Nitric?
> > And do you now deny that air is lighter than water??
> Relevance? Birds & pterosaurs lost their teeth due to flight.
Perhaps they didn't consult yor dentist?
> > PNSs are simply what the word says: air around the nasal entrance.
> H er. had small PNS? Backfloating?
Are you "really" that stupid, DD??
Again:
-erectus salt water shallow diver (reached Flores etc.)
-neand. (also) fresh water
-sapiens no diving (rudimentary PNSs
> > > > > > > ... Rhys Evans:
> > > > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > > > cheeks,
> > > > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > > > heads above water."
> > > > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > > > Obvious for everybody who understands a bit of human anatomy & physiology.
> > > > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
> > > > :-D Keep listening to your dentist, my boy.
> > > He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> > > https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
> ?
Endurance running erectus = stupid.
> What does your favorite strawman have to do with my dentist?
> > "The nowadays popular ideas about Pleistocene human ancestors running in open plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed" (Hum.Evol.28:237-266, 2013).
> What does your favorite strawman have to do with my dentist?
> > Grow up, DD, intead of wasting our time.
> What does your favorite strawman have to do with my dentist?
> > There's 0 evidence for some NO effect.
> Nitic oxide is antimicrobial in the body.
> > And do you now deny that air is lighter than water??
> Relevance? Birds & pterosaurs lost their teeth due to flight.
> > PNSs are simply what the word says: air around the nasal entrance.
> H er. had small PNS? Backfloating?
Again:
-erectus salt water shallow diver (reached Flores etc.)
-neand. (also) fresh water
-sapiens no diving (rudimentary PNSs
DD'eDeN aka note/nickname/alas_my_loves
Jun 3, 2021, 7:45:08 PM6/3/21
to
On Thursday, June 3, 2021 at 6:44:30 PM UTC-4, littor...@gmail.com wrote:
> Op woensdag 2 juni 2021 om 20:08:55 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > > > > ... Rhys Evans:
> > > > > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > > > > cheeks,
> > > > > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > > > > heads above water."
>
> > > > > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > > > > Obvious for everybody who understands a bit of human anatomy & physiology.
>
> > > > > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
>
> > > > > :-D Keep listening to your dentist, my boy.
>
> > > > He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> > > > https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
> > > Ridiculous. That man is an antelope runner, IOW, wrong:
>
> > ?
>
> Endurance running erectus = stupid.
Relevance to my dentist's information?
> Op woensdag 2 juni 2021 om 20:08:55 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > > > > ... Rhys Evans:
> > > > > > > > "Humans have particularly large sinuses, spaces in the skull between our
> > > > > > > > cheeks,
> > > > > > > > noses and foreheads," he added. "But why do we have empty spaces in our
> > > > > > > > heads? It makes no sense until we consider the evolutionary perspective. Then
> > > > > > > > it becomes clear: our sinuses acted as buoyancy aids that helped keep our
> > > > > > > > heads above water."
>
> > > > > > > More correct had been: maxillary & frontal paranasal sinuses (PNSs) were larger in neandertals, and smaller in erectus, than in humans today (Hn>Hs>He), exactly according to their lifestyles:
> > > > > > > 1) H.erectus were littoral, shallow-diving in seawater, they reached islands far oversea: they had small PNSs, and well-developed pachyosteosclerosis (POS, thick & dense bone, typical for slow shallow diving mammals).
> > > > > > > 2) H.neand. are found along coasts & big rivers, probably they seasonally followed the river (e.g. the Meuse) inland & to the coast, they still frequently (seasonally?) dived for shallow-aquatic foods: they had moderate POS (He>Hn>Hs) & very large PNSs (Hn>Hs>He).
> > > > > > > 3) H.sapiens reduced diving and became wading-walking: we lost POS, but still have moderate PNSs (phylogenetic inertia).
> > > > > > > Our littoral ancestors dived in cycles of c 90 seconds (e.g. cf hyperventilation), face down at the bottom, collecting shellfish, nose up at the surface, hyperventilating, the nostrils surrounded by (exactly as the word says) para-nasal sinuses, and the heavy occiput (thick POS) inside the water.
> > > > > > > Obvious for everybody who understands a bit of human anatomy & physiology.
>
> > > > > > My dentist told me that when people lose their teeth, sinuses expand there, so after awhile dental implants cannot be used there; instead a dental bridge must be used to fill the gap of the missing tooth. Many fossil adult skulls lack teeth, so they'd be expected to have enlarged sinuses. Are you positing that toothless adults floated more, while younger folk dove more?
>
> > > > > :-D Keep listening to your dentist, my boy.
>
> > > > He may know more than you about enlarging sinuses and their expanding Nitric Oxide anti-microbial effects on dental infections ?
> > > > https://groups.io/g/AAT/message/34914?p=,,,20,0,0,0::relevance,,1998,20,2,360,64939802
> > > Ridiculous. That man is an antelope runner, IOW, wrong:
>
> > ?
>
> Endurance running erectus = stupid.
> > What does your favorite strawman have to do with my dentist?
> 0
> > > "The nowadays popular ideas about Pleistocene human ancestors running in open plains (‘endurance running’, ‘dogged pursuit of swifter animals’, ‘born to run’, ‘le singe coureur’, ‘Savannahstan’) are among the worst scientific hypotheses ever proposed" (Hum.Evol.28:237-266, 2013).
>
> > What does your favorite strawman have to do with my dentist?
> 0
> > > Grow up, DD, intead of wasting our time.
>
> > What does your favorite strawman have to do with my dentist?
> 0
> > > There's 0 evidence for some NO effect.
>
> > Nitic oxide is antimicrobial in the body.
> Nitric?
> > > And do you now deny that air is lighter than water??
>
> > Relevance? Birds & pterosaurs lost their teeth due to flight.
> Perhaps they didn't consult yor dentist?
> > > PNSs are simply what the word says: air around the nasal entrance.
>
> > H er. had small PNS? Backfloating?
> Are you "really" that stupid, DD??
> Again:
> -erectus salt water shallow diver (reached Flores etc.)
> -neand. (also) fresh water
> -sapiens no diving (rudimentary PNSs
> > > Do you really believe that neandertals had less teeth than erectus???
> > > It's not difficult, even for you:
> > > --PNS Hn>Hs>He,
> > > --POS He>Hn>Hs,
> > > IOW, biology shows
> > > - early-Pleist.He was littoral,
> > > - Hn dived a lot for freshwater foods (seasonally following the river to the coast?)
> > > - late-Pleist.Hs showed a shift from diving to wading-walking.
> > > This is confirmed by everything we know, google
> > > "coastal dispersal Pleistocene Homo PPT".
littor...@gmail.com
Jun 4, 2021, 6:54:23 AM6/4/21
to
Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
How stupid can you be?
Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
How stupid can you be?
DD'eDeN aka note/nickname/alas_my_loves
Jun 4, 2021, 7:25:54 AM6/4/21
to
littor...@gmail.com
Jun 4, 2021, 5:37:03 PM6/4/21
to
Op vrijdag 4 juni 2021 om 13:25:54 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
> > Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
> > IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
> > How stupid can you be?
> https://www.dentalimplantsusa.com/missing-teeth/sinus-expansion-due-to-missing-teeth/
Are you really too stupid to see that this is an interpretation, no objective study.
Study a bit.
And answer:
-erectus had very small PNSs,
-neandertals had very large PNSs,
-we are intermediate (Hn>Hs>Hs):
do you really believe that neandertals lost their teeth sooner than we do??
and that erectus kept its dentition longer than we do??
Grow up, DD.
> > Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
> > Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
> > IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
> > How stupid can you be?
> https://www.dentalimplantsusa.com/missing-teeth/sinus-expansion-due-to-missing-teeth/
Study a bit.
And answer:
-erectus had very small PNSs,
-neandertals had very large PNSs,
-we are intermediate (Hn>Hs>Hs):
do you really believe that neandertals lost their teeth sooner than we do??
and that erectus kept its dentition longer than we do??
Grow up, DD.
DD'eDeN aka note/nickname/alas_my_loves
Jun 4, 2021, 7:44:00 PM6/4/21
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Find a professional dentist that disagrees with the "interpretation" I cited.
Primum Sapienti
Jun 7, 2021, 12:48:08 AM6/7/21
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I Envy JTEM
Jun 7, 2021, 2:16:29 AM6/7/21
to
littor...@gmail.com wrote:
> This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
> were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
They claimed to have ruled out aquatic sources, and it's easy to exceed even big cats
> This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
> were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
by merely killing & eating carnivores. So the carnivore absorbs the isotopes from the
100 herbivores that it has eaten in it's lifetime, then when a Neanderthal killed and
ate two carnivores he absorbed TWO LIFETIMES worth of those isotopes.
This is why large predatory fish are less healthy: The little fish absorb toxins, the
big fish eat them and absorb the toxins from all those little fish!
Google: Tuna Mercury
Oh: Even cannibalism can account for the Super Predator isotopes.
-- --
https://jtem.tumblr.com/post/653178811367768064
littor...@gmail.com
Jun 7, 2021, 1:04:17 PM6/7/21
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Op zaterdag 5 juni 2021 om 01:44:00 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
> > > > Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
> > > > IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
> > > > How stupid can you be?
> > > https://www.dentalimplantsusa.com/missing-teeth/sinus-expansion-due-to-missing-teeth/
> > Are you really too stupid to see that this is an interpretation, no objective study.
> > Study a bit. And answer:
> > -erectus had very small PNSs,
> > -neandertals had very large PNSs,
> > -we are intermediate (Hn>Hs>Hs):
> > do you really believe that neandertals lost their teeth sooner than we do??
> > and that erectus kept its dentition longer than we do??
> Find a professional dentist that disagrees with the "interpretation" I cited.
No professional dentist is so stupid that he believes that this is a fact rather than an interpretation:
> > > > Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
> > > > Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
> > > > IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
> > > > How stupid can you be?
> > > https://www.dentalimplantsusa.com/missing-teeth/sinus-expansion-due-to-missing-teeth/
> > Are you really too stupid to see that this is an interpretation, no objective study.
> > Study a bit. And answer:
> > -erectus had very small PNSs,
> > -neandertals had very large PNSs,
> > -we are intermediate (Hn>Hs>Hs):
> > do you really believe that neandertals lost their teeth sooner than we do??
> > and that erectus kept its dentition longer than we do??
> 'Mermaids riding seahorses' is more objective for you.
???
> Find a professional dentist that disagrees with the "interpretation" I cited.
-erectus had very small PNSs,
-neandertals had very large PNSs,
-we are intermediate (Hn>Hs>Hs):
do you really think they believe that neandertals lost their teeth sooner than we do??
-neandertals had very large PNSs,
-we are intermediate (Hn>Hs>Hs):
DD'eDeN aka note/nickname/alas_my_loves
Jun 7, 2021, 8:50:04 PM6/7/21
to
On Monday, June 7, 2021 at 1:04:17 PM UTC-4, littor...@gmail.com wrote:
> Op zaterdag 5 juni 2021 om 01:44:00 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
> > > > > Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
> > > > > IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
> > > > > How stupid can you be?
>
> > > > https://www.dentalimplantsusa.com/missing-teeth/sinus-expansion-due-to-missing-teeth/
>
> > > Are you really too stupid to see that this is an interpretation, no objective study.
> > > Study a bit. And answer:
> > > -erectus had very small PNSs,
> > > -neandertals had very large PNSs,
> > > -we are intermediate (Hn>Hs>Hs):
> > > do you really believe that neandertals lost their teeth sooner than we do??
> > > and that erectus kept its dentition longer than we do??
> > 'Mermaids riding seahorses' is more objective for you.
> ???
> > Find a professional dentist that disagrees with the "interpretation" I cited.
> No professional dentist is so stupid that he believes that this is a fact rather than an interpretation:
The murky monkey makes claims based on wishfull fantasies, then assumes the entire dental industry agrees.
> Op zaterdag 5 juni 2021 om 01:44:00 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:
> > > > > Some idiot believes losing teeth enlarges paranasal sinuses (PNSs).
> > > > > Neandertals had very large PNSs, erectus had very small PNSs (Hn>Hs>He),
> > > > > IOW, neandertal fossils never have teeth, but erectus fossils still have all their teeth...??
> > > > > How stupid can you be?
>
> > > > https://www.dentalimplantsusa.com/missing-teeth/sinus-expansion-due-to-missing-teeth/
>
> > > Are you really too stupid to see that this is an interpretation, no objective study.
> > > Study a bit. And answer:
> > > -erectus had very small PNSs,
> > > -neandertals had very large PNSs,
> > > -we are intermediate (Hn>Hs>Hs):
> > > do you really believe that neandertals lost their teeth sooner than we do??
> > > and that erectus kept its dentition longer than we do??
> > 'Mermaids riding seahorses' is more objective for you.
> ???
> > Find a professional dentist that disagrees with the "interpretation" I cited.
> No professional dentist is so stupid that he believes that this is a fact rather than an interpretation:
Extremism is a bad habit. Parsimony isn't.
littor...@gmail.com
Jun 8, 2021, 2:56:21 PM6/8/21
to
Op maandag 7 juni 2021 om 08:16:29 UTC+2 schreef I Envy JTEM:
> > This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
> > were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
> They claimed to have ruled out aquatic sources,
They did not.
> and it's easy to exceed even big cats
> by merely killing & eating carnivores. ...
Only complete idiots believe that neandertals only ate carnivores.
The biological answere is simple, google
"coastal dispersal Pleistocene Homo PPT Verhaegen";
> > This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
> > were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
> They claimed to have ruled out aquatic sources,
> and it's easy to exceed even big cats
Only complete idiots believe that neandertals only ate carnivores.
The biological answere is simple, google
"coastal dispersal Pleistocene Homo PPT Verhaegen";
Paul Crowley
Jun 8, 2021, 3:41:55 PM6/8/21
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On Tuesday 8 June 2021 at 19:56:21 UTC+1, littor...@gmail.com wrote:
> Op maandag 7 juni 2021 om 08:16:29 UTC+2 schreef I Envy JTEM:
>>> This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
>>> were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
>
> Op maandag 7 juni 2021 om 08:16:29 UTC+2 schreef I Envy JTEM:
>>> This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
>>> were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
>
>> and it's easy to exceed even big cats
>> by merely killing & eating carnivores. ...
>
> Only complete idiots believe that neandertals only ate carnivores.
The claim is (or should be) that neandertals
>> by merely killing & eating carnivores. ...
>
> Only complete idiots believe that neandertals only ate carnivores.
_sometimes_ ate carnivores. That would be
enough to distort the isotopic record.
Carnivores are much easier to attract, and to
bait, trap and kill. It's also necessary to rid your
locality of ones that are likely to be dangerous
to you or your family. Bear meat can be highly
nutritious, so long as you avoid the liver.
I Envy JTEM
Jun 8, 2021, 4:07:45 PM6/8/21
to
Paul Crowley wrote:
> The claim is (or should be) that neandertals
> _sometimes_ ate carnivores. That would be
> enough to distort the isotopic record.
>
> Carnivores are much easier to attract, and to
> bait, trap and kill. It's also necessary to rid your
> locality of ones that are likely to be dangerous
> to you or your family. Bear meat can be highly
> nutritious, so long as you avoid the liver.
And cannibalism was a thing.
> The claim is (or should be) that neandertals
> _sometimes_ ate carnivores. That would be
> enough to distort the isotopic record.
>
> Carnivores are much easier to attract, and to
> bait, trap and kill. It's also necessary to rid your
> locality of ones that are likely to be dangerous
> to you or your family. Bear meat can be highly
> nutritious, so long as you avoid the liver.
But people eat dogs TODAY. Dogs & wolves are the exact same
species. People eat cats TODAY. It's crazy to believe that they
didn't eat carnivores!
There's a funny story, happened a few years ago, where a frozen
donkey meat product that Walmart was selling in China turned
out to be contaminated by other meats. One online comment
read, "But doesn't fox meat cost more anyway?"
Meaning, the fact that there was fox meat inside their donkey
meat meatballs was a good thing... a bonus...
Some people try to look at the past but see only themselves.
They ate carnivores. They are each other sometimes!
-- --
https://jtem.tumblr.com/post/653442918296829952
littor...@gmail.com
Jun 8, 2021, 6:08:20 PM6/8/21
to
Op dinsdag 8 juni 2021 om 21:41:55 UTC+2 schreef Paul Crowley:
> >>> This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
> >>> were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
> >> and it's easy to exceed even big cats
> >> by merely killing & eating carnivores. ...
> > Only complete idiots believe that neandertals only ate carnivores.
> The claim is (or should be) that neandertals
> _sometimes_ ate carnivores. That would be
> enough to distort the isotopic record.
Not at all.
> >>> This was an incredibly biased interpretation of C & N isotopic data, that showed that Hn
> >>> were more carnivorous than felids (:-DDD) - if one does not consider aquatic foods!
> >> and it's easy to exceed even big cats
> >> by merely killing & eating carnivores. ...
> > Only complete idiots believe that neandertals only ate carnivores.
> The claim is (or should be) that neandertals
> _sometimes_ ate carnivores. That would be
> enough to distort the isotopic record.
DD'eDeN aka note/nickname/alas_my_loves
Jun 9, 2021, 12:33:01 AM6/9/21
to
0 new messages