Theropod tracks from Lower Cretaceous of Portugal + Dinosaurs of Montana
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Ben Creisler
Nov 6, 2025, 2:08:00 PM (5 days ago) Nov 6
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Ben Creisler
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Silvério Domingues Figueiredo (2025)
Dinosaur Tracks of the Areia do Mastro and Papo-Seco Formations (Lower Cretaceous, Cabo Espichel): Paleobiological and Paleoenvironmental Continuities and Discontinuities
Fossil Studies 3(4): 18
doi: https://doi.org/10.3390/fossils3040018
https://www.mdpi.com/2813-6284/3/4/18
New theropod tracks found in the Papo-Seco Formation (lower Barremian, Lusitanian Basin, Portugal) are presented. In 2022, thirteen theropod tracks were identified on the lowermost bed of this formation, preserved as natural cast infillings on the bedding surface. Two different morphotypes of theropod footprints have been identified, which occur at two different levels of this layer. The first morphotype, consisting of smaller footprints with narrow digits, is attributed to theropoda indet; the other morphotype, consisting only of one footprint, is assigned provisionally to the ichnogenus Megalosauripus isp. It is suggested that they were produced by medium-sized theropods, on a carbonate mud substrate, probably in a coastal environment associated with a lagoon. These tracks, and others previously described in the underlying Areia do Mastro Formation, suggest a temporal continuity of the groups of dinosaurs that frequented this area, during the early Barremian. However, the morphotypes now described differ from those of the theropods tracks from the Areia do Mastro Formation, which may indicate a change in faunal types within the theropod group.
Silvério Domingues Figueiredo (2025)
Dinosaur Tracks of the Areia do Mastro and Papo-Seco Formations (Lower Cretaceous, Cabo Espichel): Paleobiological and Paleoenvironmental Continuities and Discontinuities
Fossil Studies 3(4): 18
doi: https://doi.org/10.3390/fossils3040018
https://www.mdpi.com/2813-6284/3/4/18
New theropod tracks found in the Papo-Seco Formation (lower Barremian, Lusitanian Basin, Portugal) are presented. In 2022, thirteen theropod tracks were identified on the lowermost bed of this formation, preserved as natural cast infillings on the bedding surface. Two different morphotypes of theropod footprints have been identified, which occur at two different levels of this layer. The first morphotype, consisting of smaller footprints with narrow digits, is attributed to theropoda indet; the other morphotype, consisting only of one footprint, is assigned provisionally to the ichnogenus Megalosauripus isp. It is suggested that they were produced by medium-sized theropods, on a carbonate mud substrate, probably in a coastal environment associated with a lagoon. These tracks, and others previously described in the underlying Areia do Mastro Formation, suggest a temporal continuity of the groups of dinosaurs that frequented this area, during the early Barremian. However, the morphotypes now described differ from those of the theropods tracks from the Areia do Mastro Formation, which may indicate a change in faunal types within the theropod group.
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John Horner and Raymond Rogers (2025)
Dinosaurs of Montana
Montana Bureau of Mines and Geology Memoir 70: 155 p.
DOI: https://doi.org/10.59691/ERQV8347
https://mbmg.mtech.edu/mbmgcat/public/ListCitation.asp?pub_id=32838#gsc.tab=0
Anyone interested in dinosaurs has likely heard of Jack Horner, the famous Montana paleontologist who consulted on the Jurassic Park movies. Dr. Horner has now teamed up with geologist and paleontologist Dr. Raymond Rogers (one of Jack's first students), and the Montana Bureau of Mines and Geology, to publish a foundational new book, Dinosaurs of Montana. Dinosaurs of Montana is part history of dinosaur discoveries, part geology, part categorical listing of Montana species, and part memoir, packed with photos from throughout the years of discovery and original art.
Dinosaurs of Montana
Montana Bureau of Mines and Geology Memoir 70: 155 p.
DOI: https://doi.org/10.59691/ERQV8347
https://mbmg.mtech.edu/mbmgcat/public/ListCitation.asp?pub_id=32838#gsc.tab=0
Anyone interested in dinosaurs has likely heard of Jack Horner, the famous Montana paleontologist who consulted on the Jurassic Park movies. Dr. Horner has now teamed up with geologist and paleontologist Dr. Raymond Rogers (one of Jack's first students), and the Montana Bureau of Mines and Geology, to publish a foundational new book, Dinosaurs of Montana. Dinosaurs of Montana is part history of dinosaur discoveries, part geology, part categorical listing of Montana species, and part memoir, packed with photos from throughout the years of discovery and original art.
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