Results 31 to 40 of about 5,381,456 (146)

Cretaceous Dinosaurs across Alaska Show the Role of Paleoclimate in Structuring Ancient Large-Herbivore Populations

Geosciences, 2022
The partially correlative Alaskan dinosaur-bearing Prince Creek Formation (PCF), North Slope, lower Cantwell Formation (LCF), Denali National Park, and Chignik Formation (CF), Aniakchak National Monument, form an N–S transect that, together, provides an ...
Anthony R. Fiorillo, Paul J. McCarthy, Yoshitsugu Kobayashi, Marina B. Suarez   +3 more
doaj   +1 more source

Competition structured a Late Cretaceous megaherbivorous dinosaur assemblage

Scientific Reports, 2019
Modern megaherbivore community richness is limited by bottom-up controls, such as resource limitation and resultant dietary competition. However, the extent to which these same controls impacted the richness of fossil megaherbivore communities is poorly ...
Jordan C. Mallon
doaj   +1 more source

Dinosaur footprints and other Ichnofauna from the Cretaceous Kem Kem Beds of Morocco [PDF]

, 2014
We describe an extensive ichnofossil assemblage from the likely Cenomanian-age 'lower' and 'upper' units of the 'Kem Kem beds' in southeastern Morocco.
Baidder, Lahssen, Zouhri, Samir, David M Martill, Jeffery A Wilson, Ibrahim, Nizar, Lahssen Baidder, Paul C. Sereno (36583), David J. Varricchio (132149), Dutheil, Didier B., David J Varricchio, Varricchio, David J., Martill, David M., Wilson, Jeff A., Paul C Sereno, Sereno, Paul C., Nizar Ibrahim, Didier B Dutheil, Jeff A. Wilson (531956), Didier B. Dutheil (53097), Samir Zouhri (364453), Samir Zouhri, Lahssen Baidder (364452), Nizar Ibrahim (364450), David M. Martill (364451)   +23 more
core   +2 more sources

New elmisaurine specimens from North America and their relationship to the Mongolian Elmisaurus rarus [PDF]

Acta Palaeontologica Polonica, 2016
New specimens from Canada confirm the presence of elmisaurines in North America and shed light on the relationship of Leptorhynchos elegans to Mongolian forms.
Gregory F. Funston, Philip J. Currie, Michael E. Burns   +2 more
doaj   +1 more source

Problematic putative pachycephalosaurids: Synchrotron µCT imaging shines new light on the anatomy and taxonomic validity of Gravitholus albertae from the Belly River Group (Campanian) of Alberta, Canada

Vertebrate Anatomy, Morphology, Palaeontology, 2023
The taxonomic validity of the holotype and sole specimen of the pachycephalosaurid Gravitholus albertae (TMP 1972.027.0001) from the Belly River Group (Alberta, Canada), remains unresolved forty years after its first description.
Aaron Dyer, Mark Powers, Phiip Currie
doaj   +1 more source

Jaw mechanics and evolutionary paleoecology of the megaherbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada

Journal of Vertebrate Paleontology, 2015
ABSTRACTThe question of what role differential jaw mechanics may have played in facilitating dietary niche partitioning among Late Cretaceous megaherbivorous dinosaurs from Laramidia is examined, using the fossil assemblage of the Dinosaur Park Formation as a test case. We use phylogenetic inference to reconstruct the mandibular adductor musculature of
Jordan C. Mallon, Jason S. Anderson
openaire   +2 more sources

Tooth marked caudal vertebrae suggest feedingtyrannosaurids systematically processed hadrosaurid tails

Vertebrate Anatomy, Morphology, Palaeontology
 Our ability to recognize larger-scale patterns in dinosaur feeding behaviour has been relatively limited due to a general lack of large-scale, systematic surveys of isolated elements.
Taia Wyenberg-Henzler, Darren Tanke
doaj   +1 more source

Reconsidering the status and affinities of the ornithischian dinosaur Tatisaurus oehleri Simmons, 1965 [PDF]

The early Mesozoic fossil fauna collected from the Lower Lufeng Formation of Yunnan Province, China, has attracted considerable interest and attention since its discovery in the late 1930s.
Maidment, S. C. R., Norman, D. B., Butler, R. J.   +2 more
core   +1 more source

First occurrence of Daspletosaurus horneri (Tyrannosauridae, Tyrannosaurinae) in the Dinosaur Park Formation of Dinosaur Provincial Park, Alberta (Treaty 7 Territory)

Historical Biology
The upper Campanian tyrannosaurine Daspletosaurus horneri was originally described based solely on specimens from the Two Medicine Formation of Montana, U.S.A.. Here, a taxonomic reassessment of a stratigraphically high occurrence of a Daspletosaurus specimen, CMN 350, from the Dinosaur Park Formation provides the first evidence of D.
Colton C. Coppock, Mark J. Powers, Jared T. Voris, Philip J. Currie   +3 more
openaire   +1 more source

Discovery, preservation, and protection of notable paleontological resources from Dinosaur National Monument, Utah and Colorado

Parks Stewardship Forum
Dinosaur National Monument was established in 1915 to protect and preserve the globally significant paleontological resources of the Carnegie Dinosaur Quarry.
ReBecca Hunt-Foster
doaj   +1 more source