The ascendancy of dinosaurs on land near the close of the Triassic now appears to have
been as accidental and opportunistic as their demise and replacement by therian mammals …

Avian integument is thin, elastic, and loosely attached to the body, giving birds the freedom
of movement needed for flight. Its epidermis is both keratinized and lipogenic, and the skin …

The most commonly cited apomorphy of Archosauriformes is an opening in the snout known
as the antorbital cavity. Despite the ubiquity and prominence of the antorbital cavity, its …

Two spectacular fossilized dinosaur skeletons were recently discovered in Liaoning in
northeastern China. Here we describe the two nearly complete skeletons of a small …

Coelurosauria is the most diverse clade of theropod dinosaurs. Much of this diversity is
present in Paraves—the clade of dinosaurs containing dromaeosaurids, troodontids, and …

There is little consistency in the notation and orientation terminology used in discussions of
non-mammalian fossil venebrate dentitions. The standardization of this terminology, as done …

Abstract The Late Cretaceous was a time of tremendous global change, as the final stages
of the Age of Dinosaurs were shaped by climate and sea level fluctuations and witness to …

Interpreting key ecological parameters, such as diet, of extinct organisms without the benefit
of direct observation or explicit fossil evidence poses a formidable challenge for …

Isolated theropod teeth are some of the most common fossils in the dinosaur fossil record
and are continually reported in the literature. Recently developed quantitative methods have …

This work serves as a compendium of anatomical resources upon which a companion
phylogenetic analysis of Aves and related Theropoda (Avialae) was based. Following a brief …