Results 1 to 10 of about 266 (116)
A large hadrosaurid dinosaur from Presa San Antonio, Cerro del Pueblo Formation, Coahuila, Mexico [PDF]
Acta Palaeontologica Polonica, 2021 New hadrosaurid postcranial material is reported, collected near Presa San Antonio, Parras de la Fuente municipality, Coahuila, Mexico, in a sedimentary sequence belonging to the upper Campanian of the Cerro del Pueblo Formation, in the Parras Basin. The
Rogelio Antonio Reyna-Hernández +3 more
doaj +3 more sources
Journal of Systematic PalaeontologyThe non-marine deposits of the Campanian–early Maastrichtian Cabullona Group (north-eastern Sonora, north-western Mexico) have yielded abundant fossils of continental vertebrates, including dinosaurs. However, this dinosaur fauna has yet to be studied in detail. We describe three partial hadrosaurid specimens from two localities (Arroyo del Alamito and
Alba Vicente +2 more
exaly +2 more sources
Geochemistry, Geophysics, Geosystems, Volume 24, Issue 9, September 2023., 2023 Abstract The Early Cretaceous is an important time of transition in Earth history, marked by a succession of oceanic anoxic events and carbon cycle perturbations that drove changes on land and in the ocean. The need for more precise geochronologic constraints in terrestrial sediments of Early Cretaceous age that record faunal and floral transitions is ...
Marina B. Suarez +8 more
wiley +1 more source
Peer Community Journal, 2023 The Mesaverde Formation of the Wind River and Bighorn basins of Wyoming preserves a rich yet relatively unstudied terrestrial and marine faunal assemblage dating to the Campanian.
Wu, Ka Yan +3 more
doaj +1 more source
The Anatomical Record, Volume 303, Issue 4, Page 673-690, April 2020., 2020 ABSTRACT Several published censuses have noted the presence of two tyrannosaurids, Daspletosaurus sp. and Albertosaurus sarcophagus, within the Upper Cretaceous Horseshoe Canyon Formation of Alberta. Although A. sarcophagus is known from more than a dozen major discoveries in these strata, Daspletosaurus sp.
Jordan C. Mallon +3 more
wiley +1 more source
Cranial anatomy and stratigraphy of a new specimen of the tyrannosaurine dinosaur Daspletosaurus from the Judith River Formation of Central Montana, USA [PDF]
Acta Palaeontologica PolonicaThe tyrannosaurine Daspletosaurus contains three recognized species from the Campanian of Montana and Alberta: Daspletosaurus torosus, Daspletosaurus wilsoni, and Daspletosaurus horneri. The recently named D. wilsoni has been proposed to represent a
ETHAN WARNER-COWGILL +3 more
doaj +1 more source
Skull ecomorphology of megaherbivorous dinosaurs from the dinosaur park formation (upper campanian) of Alberta, Canada. [PDF]
PLoS ONE, 2013 Megaherbivorous dinosaur coexistence on the Late Cretaceous island continent of Laramidia has long puzzled researchers, owing to the mystery of how so many large herbivores (6-8 sympatric species, in many instances) could coexist on such a small (4-7 ...
Jordan C Mallon, Jason S Anderson
doaj +1 more source
New insights into chasmosaurine (Dinosauria: Ceratopsidae) skulls from the Upper Cretaceous (Campanian) of Alberta, and an update on the distribution of accessory frill fenestrae in Chasmosaurinae [PDF]
PeerJ, 2018 Chasmosaurine ceratopsids are well documented from the Upper Cretaceous (Campanian) Dinosaur Park Formation (DPF) of southern Alberta and Saskatchewan, and include Chasmosaurus belli, Chasmosaurus russelli, Mercuriceratops gemini, Vagaceratops irvinensis,
James A. Campbell +4 more
doaj +2 more sources
Vertebrate Anatomy, Morphology, Palaeontology, 2019 The Dinosaur Park Formation (DPF) has a diverse assemblage of chasmosaurines currently represented by Chasmosaurus belli, C. russelli, Vagaceratops irvinensis, and Mercuriceratops gemini, and may also include remains possibly referable to Spiclypeus ...
James Alexander Campbell +4 more
doaj +3 more sources