The first dinosaur from Washington State and a review of Pacific coast dinosaurs from North America. [PDF]
PLoS ONE, 2015 We describe the first diagnostic dinosaur fossil from Washington State. The specimen, which consists of a proximal left femur, was recovered from the shallow marine rocks of the Upper Cretaceous (Campanian) Cedar District Formation (Nanaimo Group) and is
Brandon R Peecook, Christian A Sidor
doaj +2 more sources
Rise of the king: Gondwanan origins and evolution of megaraptoran dinosaurs [PDF]
Royal Society Open ScienceLate Cretaceous Earth was dominated by theropods such as tyrannosauroids and megaraptorans; however, it is unclear how these clades diversified and grew to massive proportions.
Cassius Morrison +9 more
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A new tyrannosaur with evidence for anagenesis and crocodile-like facial sensory system. [PDF]
Sci Rep, 2017 A new species of tyrannosaurid from the upper Two Medicine Formation of Montana supports the presence of a Laramidian anagenetic (ancestor-descendant) lineage of Late Cretaceous tyrannosaurids.
Carr TD +4 more
europepmc +3 more sources
A large tyrannosaurid from the Late Cretaceous (Campanian) of North America [PDF]
Scientific ReportsThe Tyrannosauridae emerged as the dominant large predators in Laurasia during the Late Cretaceous. Their evolution in North America culminated with the replacement of Albertosaurinae, Daspletosaurinae, and Teratophonei, with masses of 2-3 tonnes, by the
Nicholas R. Longrich +3 more
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A brief review of non-avian dinosaur biogeography: state-of-the-art and prospectus. [PDF]
Biol LettDinosaurs potentially originated in the mid-palaeolatitudes of Gondwana 245–235 million years ago (Ma) and may have been restricted to cooler, humid areas by low-latitude arid zones until climatic amelioration made northern dispersals feasible ca 215 Ma.
Upchurch P, Chiarenza AA.
europepmc +3 more sources
A new tyrannosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Menefee Formation of New Mexico. [PDF]
PeerJ, 2018 The giant tyrannosaurids were the apex predators of western North America and Asia during the close of the Cretaceous Period. Although many tyrannosaurid species are known from numerous skeletons representing multiple growth stages, the early evolution ...
McDonald AT, Wolfe DG, Dooley AC.
europepmc +3 more sources
Shifts in food webs and niche stability shaped survivorship and extinction at the end-Cretaceous. [PDF]
Sci Adv, 2022 It has long been debated why groups such as non-avian dinosaurs became extinct whereas mammals and other lineages survived the Cretaceous/Paleogene mass extinction 66 million years ago.
García-Girón J +8 more
europepmc +7 more sources
Multiproxy synthesis at the Arlington Archosaur Site: New insights into Cretaceous paralic paleoenvironments and regional stratigraphy, Woodbine Group, Texas, USA [PDF]
SedimentologikaEcosystems of the 'mid' Cretaceous are significant but poorly understood, due in large part to a sparse fossil record. Existing fossils, particularly in North America, are not chronostratigraphically well-constrained, further hampering comparisons of ...
Christopher R. Noto +2 more
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A new nodosaurid ankylosaur (Dinosauria: Thyreophora) from the Upper Cretaceous Menefee Formation of New Mexico. [PDF]
PeerJ, 2018 Nodosauridae is a clade of armored dinosaurs with a rich fossil record and long history of study in North America. Nodosaurid fossils have been collected throughout the western United States and Canada. Here, we report three new nodosaurid specimens from
McDonald AT, Wolfe DG.
europepmc +3 more sources
The first duckbill dinosaur (Hadrosauridae: Lambeosaurinae) from Africa and the role of oceanic dispersal in dinosaur biogeography [PDF]
, 2021 The Late Cretaceous saw distinctly endemic dinosaur faunas evolve in the northern and southern hemispheres. The Laurasian continents of North America and Asia were dominated by hadrosaurid and ceratopsian ornithischians, with tyrannosaurs as apex ...
Jalil, Nour Eddine +3 more
core +2 more sources