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 …

▪ Abstract Phylogenetic studies and new fossil evidence have yielded fundamental insights
into the pattern and timing of dinosaur evolution and the emergence of functionally modern …

The early evolution of archosauromorphs during the Permo-Triassic constitutes an excellent
empirical case study to shed light on evolutionary radiations in deep time and the timing and …

Archosaurs have a 250 million year record that originated shortly after the Permian-Triassic
extinction event and is continued today by two extant clades, the crocodylians and the …

Tetanuran theropods represent the majority of Mesozoic predatory dinosaur diversity and
the lineage leading to extant Aves. Thus their history is relevant to understanding the …

The geological and paleoenvironmental setting and the vertebrate taxonomy of the
fossiliferous, Cenomanian-age deltaic sediments in eastern Morocco, generally referred to …

F. HARVEY POUGH CHRISTINE M. JANIS JOHN B. HEISER Page 1 F. HARVEY POUGH
CHRISTINE M. JANIS JOHN B. HEISER VERTEBRATE LIFE NINTH EDITION Page 2 Boston …

Although sauropods played a major role in terrestrial ecosystems during much of the
Mesozoic Era, little effort has been directed toward diagnosing Sauropoda and establishing …

Dinosauromorpha includes dinosaurs and other much less diverse dinosaur precursors of
Triassic age, such as lagerpetids [1]. Joint occurrences of these taxa with dinosaurs are rare …

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 …