Results 41 to 50 of about 266 (116)

Supplementary cranial description of the types of Edmontosaurus regalis (Ornithischia: Hadrosauridae), with comments on the phylogenetics and biogeography of Hadrosaurinae. [PDF]

PLoS ONE, 2017
The cranial anatomy of the flat-skulled hadrosaurine Edmontosaurus regalis (Ornithischia: Hadrosauridae) is extensively described here, based on the holotype and paratype collected from the middle part of the Horseshoe Canyon Formation in southern ...
Hai Xing, Jordan C Mallon, Margaret L Currie   +2 more
doaj   +1 more source

Online Supplementary Data: Deep-time biodiversity patterns and the dinosaurian fossil record of the Late Cretaceous Western Interior, USA

, 2021
In order for palaeontological data to be informative to ecologists seeking to understand the causes of today's diversity patterns, palaeontologists must demonstrate that actual biodiversity patterns are preserved in our reconstructions of past ecosystems.
Maidment, Susannah
core   +1 more source

Freshwater amphibians and squamates from Villeveyrac (lower Campanian; Hérault, France): palaeodiversity, palaeoenvironment and implications for the Late Cretaceous palaeobiogeography of the European herpetofauna

Papers in Palaeontology, Volume 12, Issue 1, January/February 2026.
Abstract The Late Cretaceous witnessed numerous transgression–regression sequences and the onset of a global cooling phase at the start of the Campanian. In the European archipelago, these environmental changes, combined with active plate tectonics, facilitated the formation of ephemeral land bridges that served as dispersal routes for a variety of ...
Olivier Jansen, Géraldine Garcia, Olga Otero, Marc Augé, Bernard Gomez, Xavier Valentin   +5 more
wiley   +1 more source

Unexpected pathway for intercontinental movement into the Nearctic revealed by phylogenetic analyses

Zoologica Scripta, Volume 54, Issue 4, Page 562-574, July 2025.
Abstract Much of North America's freshwater biodiversity is derived from Palearctic lineages. Isopods of the Holarctic family Asellidae are among the most widespread and diverse freshwater crustaceans, but Nearctic species are poorly studied. We examined the evolutionary history of the family, utilizing Sanger sequencing of mitochondrial and nuclear ...
Kye Tomoyasu, Andrew G. Cannizzaro, David J. Berg   +2 more
wiley   +1 more source

Unusual cranial and postcranial anatomy in the archetypal ankylosaur Ankylosaurus magniventris

FACETS, 2017
Ankylosaurus magniventris is an iconic dinosaur species often depicted in popular media. It is known from relatively fragmentary remains compared with its earlier and smaller relatives such as Euoplocephalus and Anodontosaurus.
Victoria M. Arbour, Jordan C. Mallon
doaj   +1 more source

Establishing detailed chemofacies of depositional environments in an epeiric seaway using high‐resolution (500 μm) micro X‐ray fluorescence core scanning data

Sedimentology, Volume 72, Issue 4, Page 1316-1342, June 2025.
ABSTRACT Establishing depositional environments in ancient mudstone successions from epeiric seas is difficult due to the lack of obvious lithological changes, leaving long, largely undifferentiated mudstone intervals that complicate their correlation to near‐shore environments.
Jeremy J. Gabriel, Eduard G. Reinhardt, Janok P. Bhattacharya, Majed N. Turkistani, Cristina Genovese, Antonio Páez   +5 more
wiley   +1 more source

Fishes from the Upper Cretaceous Prince Creek Formation, North Slope of Alaska, and their palaeobiogeographical significance

Papers in Palaeontology, Volume 11, Issue 3, May/June 2025.
Abstract The Upper Cretaceous Prince Creek Formation (PCF) of northern Alaska offers a unique glimpse into northern high‐latitude, non‐marine vertebrate assemblages, providing critical data on polar ecosystems during the late Campanian (c. 73 Ma).
Donald B. Brinkman, J. Andrés López, Gregory M. Erickson, Jaelyn J. Eberle, Xochitl Muñoz, Lauren N. Wilson, Zackary R. Perry, Alison M. Murray, Lisa Van Loon, Neil R. Banerjee, Patrick S. Druckenmiller   +10 more
wiley   +1 more source

A new semi‐fossorial thescelosaurine dinosaur from the Cenomanian‐age Mussentuchit Member of the Cedar Mountain Formation, Utah

The Anatomical Record, Volume 307, Issue 12, Page 3717-3781, December 2024.
Abstract Thescelosaurines are a group of early diverging, ornithischian dinosaurs notable for their conservative bauplans and mosaic of primitive features. Although abundant within the latest Cretaceous ecosystems of North America, their record is poor to absent in earlier assemblages, leaving a large gap in our understanding of their evolution ...
Haviv M. Avrahami, Peter J. Makovicky, Ryan T. Tucker, Lindsay E. Zanno   +3 more
wiley   +1 more source

Sea level change and the hypothesized evolutionary diversification of Tyrannosauroidea.

, 2013
Sea level indicators include: (A) Time-calibrated phylogenetic relationships and paleobiogeographic distribution of tyrannosaurids with biogeographic origin indicated by color (see Methods and File S1 for details of analyses and the stratigraphic and ...
Mark A. Loewen (241338), Scott D. Sampson (241336), Joseph J. W. Sertich (251359), Philip J. Currie (184570), Randall B. Irmis (480877)   +4 more
core   +1 more source

Thanatotheristes Voris & Therrien & Zelenitsky & Brown 2020

, 2020
Thanatotheristes degrootorum is a new genus and species of derived tyrannosaurine from the middle Campanian of Alberta, Canada. Whereas this taxon is most closely related to Daspletosaurus, Thanatotheristes is morphologically distinct based on several ...
Therrien, François, Zelenitsky, Darla K., Brown, Caleb M., Voris, Jared T.   +3 more
core   +1 more source