Op zaterdag 25 maart 2023 om 03:10:38 UTC+1 schreef
peter2...@gmail.com:
> > > Welcome to talk.origins, Marc!
> > > I should warn you that almost all long-time regulars here are sufficiently savvy about science
> > > to know the difference between hypotheses and "mostly settled science",
> > No, Peter, that's one of the problems.
> > The savanna idea is nonsense: they reason: in Africa you have rainforst & savanna: apes=QP in forest, human=BP on savanna.
> > But Pliocene Homo wasn't even in Africa!
> Nor anywhere else, it seems. Pliocene ended by 2.58 mya.
IMO, Pliocene Homo followed the S-Asian coasts (where fossilisation chances were low??) ->early-Pleist.Java Mojokerto.
Less sure IMO is that late-Miocene hominids (Gorilla-Homo-Pan) lived in swamp forests of the (then incipient) Red Sea.
Francesca Mansfield thinks the Zanclean mega-flood 5.33 Ma opened the Red Sea into the Gulf:
-Pan went right ->E.Afr.coastal forests ->southern Rift ->Transvaal ->late-Pliocene africanus ->early-Pleist.robustus,
-Homo went left ->S.Asian coast ->early-Pleist.Java etc.
Gorilla 8 or 7 Ma followed the (incipient) northern Rift ->Afar ->Pliocene afarensis ->early-Pleist.boisei,
IOW, Pan & Gorilla evolved partly in parallel, e.g. knuckle-walking,
see e.g. my Hum.Evol.papers
--1994 Hum.Evol.9:121-139 "Australopithecines: ancestors of the African apes?"
--1996 Hum.Evol.11:35-41 "Morphological distance between australopithecine, human and ape skulls"
IOW,
- African australopiths were fossil relatives of Pan or Gorilla,
- there was no "Out of Africa"!
> >They lived along S.Asian coasts -> early-Pleist.H.erectus on Java. Etc.
> Homo habilis in Africa: 2.31 mya to 1.65 mya.
> Homo erectus erectus (Java Man): est. ca 2.0 mya to 0.7 mya
> Where's your Pliocene Homo?
Not found (yet??): low coastal fossilisation chances?
> > > and bold claims
> > > like the ones you make are enough to turn most of them off on whoever makes them.
> > That's true.
> > > NOTE TO OTHER READERS: Marc is a long-time contributor to sci.anthropology.paleo,
> > > and has started posting to sci.bio.paleontology as well. I've had pleasant discussions
> > > with him about his heterodox theory about us being descended from aquatic apes.
> > No, not from aquatic apes!: from aquarboreal "apes".
> The "aqua" part is a controversial minority opinion; arboreal is "practically settled science."
Unforunately, yes:
the majority opinion is still that our Pleistocene ancestors ran after antilopes over Afr.plains... :-D
Aquarboreal Mio-Pliocene Hominoidea = no doubt IMO: it explains e.g.
- very broad sternum & thorax & pelvis,
- tail loss,
- shorter lumbar spine, not dorsally but centrally-placed:
they were already bipedal (today only Hylobatidae & Homo still are) for
--wading upright,
--climbing arms overhead in the branches above the water:
google "aquarboreal" (aqua=water, arbor=tree).
_____
> > > On Friday, March 24, 2023 at 6:45:37 AM UTC-4, marc verhaegen wrote:
> > > > Yes: we've seen this in geology with "plate tectonics".
> > > In light of what you next write, a much better choice of words would be "continental drift."
> > Yes, indeed.
> > > For half a century it was even more heterodox than the Aquatic Ape theory is now.
> > > > Now we see this in anthropology with "coastal dispersal".
> > > This is a more modest claim than the whole Aquatic Ape theory, and I hope
> > > readers keep this distinction in mind if they respond to your posts.
> > OK.
> > > > Most paleo-anthropologists are still afro- & anthropo-centrically biased:
> > > > -- Homo didn't come from Africa, but from S-Asia,
> > > This is your hypothesis and you need to start supporting it ASAP (As Soon As Possible).
> > See refs below, but it's obvious, e.g.
> > early-Pleistocene H.erectus (Mojokerto Java) was pachyosteosclerotic (POS):
> > POS is exlusively seen slow+shallow-diving tetrapod spp.
> Reference, other than papers [co]-authored by you?
Probably the early PAs Dubois etc.?
> The very short Wikipedia entry makes no mention of anthropoids, but it does have some
> intriguing examples, especially the last:
> Examples of animals showing pachyosteosclerosis are seacows[3] (dugongs and manatees), the extinct Plesiosauria and Mesosauria[2] and extinct aquatic sloths.[4]
> --
https://en.wikipedia.org/wiki/Pachyosteosclerosis
> Those sloths are the closest to humans in external anatomy on the list, by far.
> Have you ever made a comparative study? There is plenty of emphasis
> in the long Wikipedia entry about their pachyosteosclerosis.
>
https://en.wikipedia.org/wiki/Thalassocnus
It's difficult to compare POS quantitatively, but qualitatively there's no doubt,
even early Pinnipedia & Cetacea were POS:
pachy-osteo-sclerotic "thick bone dense", no doubt for facilitating diving, also seen in aquatic reptiles etc.
> Even their temporal span was close to that of hominini: 7-3 mya.
> > > > -- a[ustralo]piths were no human ancestors, but fossil relatives of Gorilla or Pan.
> > > This hypothesis is extremely heterodox, although there is some circumstantial
> > > evidence supporting it. Do you have any besides the utter dearth of fossils
> > > that are generally recognized to be those of chimp and gorilla relatives?
> > > I mean, of relatives that are closer to chimps and gorillas than to *Homo*?
Once again AFAIK only my own publications (esp. 1994 Hum.Evol.9:121-139 & 1996 Hum.Evol.11:35-41)
+ the opinion of the early discoverers, e.g. "-pithecus" = monkey/ape.
Miocene Hominoidea were already "bipedal" (wading-climbing, google "aquarboreal"):
IOW, there's nothing in apiths that's closer to Homo than to Pan or Gorilla
> > This was not heterodox: all early discoverers of australopiths thought they had found fossil "apes".
> The word "ape" ranges over Homininae, and only excluded Homo back then by convention.
> Java "man" was first called Pithecanthropus, and hence was called an ape.
Yes, Java Man is no ape, only still a bit apelike (brain c 800 cc).
> > An objective (= non-anthropocentric & non-afrocentric) approach is clear:
> > -E.Afr.apiths are morphologically closer to Gorilla > Pan > Homo,
> > -S.Afr.apiths are morphologically closer to Pan > Gorilla or Homo:
> > IOW, E & S.Afr.apiths evolved in parallel from late-Pliocene "gracile" to early-Pleist."robust":
> > afarensis->boisei // africanus->robustus.
> But the reigning orthodoxy has them closer to human (Homo) ancestry than any known
> Asiatic genus, including Gigantopithecus.
Yes, "reigning orthodoxy": can a whole schience be wrong? cf. continental drift?
Gigantopithecus was a fossil pongid-sivapith, also aquarboreal?
As you know, my view (hypothetically, very short):
-India approached S-Eurasia 30?25 Ma ->island archipels with coastal forests++
-Catarrhini reaching these island became "aquarboreal": broad build (Latisternalia), upright, tail loss etc.
-India underneath Asia c 20 Ma split Hylobatidae (SE.Asian coasts) & great"apes": W-Tethys coastal forests,
-the Mesopotamian Seaway closure c 15 Ma split pongids-sivapith (E) & hominids-dryopiths (W),
-late-Miocene Medit.Sea apes died out (heat? flood? cold?), only Red Sea hominids survived:
-Gorilla 8?7 Ma followed the incipient northern Rift ->Afar swamp forests: Lucy & other apiths,
-Red Sea opened into the Gulf (5.33 Ma?): Pan went right, Homo went left,
-Pan entered the southern Rift ->Transvaal swamp forests: Taung & other apiths (// Gorilla),
-Homo in S-Asia evolved from aquarboreal to frequent shallow-diving early-Pleist.?
--marc