Results 81 to 90 of about 6,936 (207)

Teeth from the Middle Jurassic of Morocco reveal the oldest turiasaurian sauropods from Africa [PDF]

open access: yesActa Palaeontologica Polonica
Readily identifiable based on their large, “spatulate” teeth with diagnostic “heart”-shaped crowns, turiasaurians are non-neosauropodan eusauropods known from varied Jurassic and Cretaceous formations across Laurasia and Gondwana.
D. Cary Woodruff   +11 more
doaj   +1 more source

Epidermal scale growth, allometry and function in non‐avian dinosaurs and extant reptiles

open access: yesJournal of Anatomy, Volume 247, Issue 2, Page 250-283, August 2025.
Scale shapes in non‐avian dinosaurs and extant reptiles are mostly retained through growth. However, positive scale allometry and proportional differences in scale breadth are also detected, which are likely associated with changing body proportions. Based on their generally conserved morphology and impracticality for visual display, the enlarged size ...
Nathan James Enriquez   +3 more
wiley   +1 more source

The first description of dinosaurian eggshell from the Maastrichtian Lance Formation, Wyoming, North America [PDF]

open access: yesActa Palaeontologica Polonica
Although numerous fossils have been excavated and described from the Upper Cretaceous (Maastrichtian) Lance Formation, eggs and eggshell remains are rare and have yet to be described in detail.
Tom T.P. Van Der Linden   +3 more
doaj   +1 more source

A REEXAMINATION OF FOUR PROLACERTIFORMS WITH IMPLICATIONS FOR PTEROSAUR PHYLOGENESIS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2000
Traditionally, pterosaurs have been included within the Archosauriformes and many contemporary workers consider the Pterosauria the sister group to Lagosuchus, Scleromochlus and the Dinosauria.
DAVID PETERS
doaj   +1 more source

The systematics of Late Jurassic tyrannosauroids (Dinosauria: Theropoda) from Europe and North America [PDF]

open access: yes, 2012
Recent discoveries of more than ten new species of tyrannosauroid theropods are helping to understand the origin and evolution of colossal body size and other characteristic features of Tyrannosaurus rex and its terminal Cretaceous relatives ...
Brusatte, Steve, Roger, Benson
core   +1 more source

Dinosaurs in decline tens of millions of years before their final extinction [PDF]

open access: yes, 2016
Whether dinosaurs were in a long-term decline or whether they were reigning strong right up to their final disappearance at the Cretaceous–Paleogene (K-Pg) mass extinction event 66 Mya has been debated for decades with no clear resolution.
Chenet   +4 more
core   +1 more source

Brief review of dinosaur studies and perspectives in Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2000
Dinosaur research is developing at very high rates around the world resulting in several new discoveries that are improving our understanding of this terrestrial reptilian clade.
ALEXANDER W. A. KELLNER   +1 more
doaj   +1 more source

Phylogeny of Allosauroidea (Dinosauria:Theropoda): Comparative analysis and resolution [PDF]

open access: yes, 2008
Allosauroidea, a clade of large-bodied theropod dinosaurs that ranged from the Middle Jurassic until the Late Cretaceous, has been the subject of extensive phylogenetic study.
Brusatte, S.L., Sereno, P.C.
core   +1 more source

Home - About - Disclaimer - Privacy