Our ability to correlate biological evolution with climate change, geological evolution, and
other historical patterns is essential to understanding the processes that shape biodiversity. …

The early evolutionary history of Ornithodira (avian-line archosaurs) has hitherto been
documented by incomplete (Lagerpeton 1 ) or unusually specialized forms (pterosaurs and …

Extant and fossil crocodilians have long been divided into taxonomic and/or ecological
groups based on broad patterns of skull shape, particularly the relative length and width of the …

The relationship between dinosaurs and other reptiles is well established 1 , 2 , 3 , 4 , but
the sequence of acquisition of dinosaurian features has been obscured by the scarcity of …

Earth’s largest biotic crisis occurred during the Permo–Triassic Transition (PTT). On land, this
event witnessed a turnover from synapsid- to archosauromorph-dominated assemblages …

In addition to their devastating effects on global biodiversity, mass extinctions have had a
long-term influence on the history of life by eliminating dominant lineages that suppressed …

The dicynodont wastebasket genus Dicynodon is revised following a comprehensive review
of nominal species. Most nominal species of Dicynodon pertain to other well-known …

Studies of the end-Permian mass extinction have emphasized potential abiotic causes and
their direct biotic effects. Less attention has been devoted to secondary extinctions resulting …

Geometric morphometrics (GM) and finite element analysis (FEA) are increasingly common
techniques for the study of form and function. We show how principles of quantitative …

Adaptive radiations are central to macroevolutionary theory. Whether triggered by acquisition
of new traits or ecological opportunities arising from mass extinctions, it is debated whether …