Quantitative studies of fossil data have proven critical to a number of major
macroevolutionary and macroecological discoveries, such as the 'Big 5'mass extinctions of …

A new troodontid dinosaur, Hypnovenator matsubaraetoheorum gen. et sp. nov., is
described based on an articulated postcranial skeleton recovered from the fluvial deposits of …

Tyrannosaurids were large carnivorous dinosaurs that underwent major changes in skull
robusticity and body proportions as they grew, suggesting that they occupied different …

Ichthyornis has long been recognized as a pivotally important fossil taxon for understanding
the latest stages of the dinosaur–bird transition, but little significant new postcranial material …

Ornithischian dinosaurs exhibited a diversity of ecologies, locomotory modes, and social
structures, making them an ideal clade in which to study the evolution of neuroanatomy and …

Dinosaurs thrived for over 160 million years in Mesozoic ecosystems, displaying diverse
ecological and evolutionary adaptations. Their ecology was shaped by large-scale climatic …

The 100 m thick stratigraphic section exposed at Dinosaur Provincial Park (DPP; southern
Alberta) contains bentonites that have been used for more than 30 years to date DPP's rocks …

Abstract The Cretaceous paleocommunities of North America preserve a rich record of
biodiversity that suggests many species occupied narrow biogeographic ranges in …

Abstract The Late Cretaceous dinosaur Tyrannosaurus rex was recently split into three
species based on the premise that variation in the T. rex hypodigm is exceptional, indicating …

Despite the long history of research in the late Campanian Judith River Formation in
northern Montana, most of the vertebrate fossils are represented by fragmentary remains …