Abstract The late Permian reptile Youngina capensis (c. 254 Ma) is a non‐saurian
neodiapsid whose anatomy has been used to represent the reptilian condition prior to the …

Abstract Following the Permo–Triassic Extinction, large-bodied diapsid reptiles—with a body
length> 1 m—rapidly expanded their ecological roles. This diversification is reflected in …

The Triassic Period saw the first appearance of numerous amniote lineages (eg
Lepidosauria, Archosauria, Mammalia) that defined Mesozoic ecosystems following the end …

The rapid radiation and dispersal of crown reptiles following the end‐Permian mass
extinction characterizes the earliest phase of the Mesozoic. Phylogenetically, this early …

The origin of cynodonts, the group ancestral to and including mammals, is one of the major
outstanding problems in therapsid evolution. One of the most troubling aspects of the …

Placoderms (Devonian fossil fishes) are resolved phylogenetically to the base of jawed
vertebrates and provide important evidence for evolutionary origins of teeth, particularly with …

Abstract The anatomy of Late Triassic drepanosauromorphs is re-examined, with a focus on
the previously published surface models of the holotype of Avicranium renestoi from the …

Theropod teeth are typically not described in detail, yet these abundant vertebrate fossils are
not only frequently reported in the literature, but also preserve extensive anatomical …

Prosaurolophus maximus Brown is a saurolophine hadrosaurid known from numerous
complete, articulated skulls from the Dinosaur Park Formation (Campanian, Alberta …

The holotype and only known specimen of the enigmatic small reptile Elachistosuchus
huenei Janensch, 1949 from the Upper Triassic (Norian) Arnstadt Formation of Saxony …