Results 21 to 30 of about 583 (182)
A new large-bodied oviraptorosaurian theropod dinosaur from the latest Cretaceous of western North America. [PDF]
PLoS ONE, 2014 The oviraptorosaurian theropod dinosaur clade Caenagnathidae has long been enigmatic due to the incomplete nature of nearly all described fossils. Here we describe Anzu wyliei gen. et sp.
Matthew C Lamanna +3 more
doaj +1 more source
New fossil lizard specimens from a poorly-known squamate assemblage in the Upper Cretaceous (Campanian) San Juan Basin, New Mexico, USA [PDF]
PeerJ, 2020 Recent collection efforts in the upper Campanian (∼76-73.5 Ma) Fruitland and Kirtland formations of northwestern New Mexico have significantly increased the taxonomic diversity of lizards in this historically poorly understood squamate assemblage.
C. Henrik Woolley +2 more
doaj +2 more sources
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 +3 more
doaj +1 more source
PLoS ONE, 2013 Few ankylosaurs are known from more than a single specimen, but the ankylosaurid Euoplocephalus tutus (from the Late Cretaceous of Alberta, Canada and Montana, USA) is represented by dozens of skulls and partial skeletons, and is therefore an important ...
Victoria M Arbour, Philip J Currie
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
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 +2 more
doaj +1 more source
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
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
Historical BiologyThe 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 +3 more
openaire +1 more source
Geology of the Golden Gate Highlands National Park
Koedoe: African Protected Area Conservation and Science, 1986 The Golden Gate Highlands National Park is underlain by stratigraphic units belonging to the upper part of the Karoo Sequence. These units include part of the Beaufort Group and the Molteno, Elliot, Clarens and Drakensberg Formations.
G.H. Groenewald
doaj +1 more source