Proterochampsidae

Proterochampsidae is an extinct family of pseudosuchian reptiles that lived during the Late Triassic period. These animals were characterized by their armored bodies, often featuring osteoderms along their backs and flanks. Proterochampsids were relatively small to medium-sized, with many species ranging from less than a meter to about two meters in length. Their skulls were typically elongated and narrow, and they possessed strong jaws suited for a predatory lifestyle. The exact position of proterochampsids within pseudosuchian phylogeny has been a subject of debate, but they are generally considered to be a distinct and early diverging lineage, possibly related to the ancestors of crocodilians or other archosaurian groups.

Fossils of proterochampsids have been found primarily in South America, particularly in Argentina and Brazil. These fossils provide valuable insights into the diversity of terrestrial fauna during the Triassic. Their anatomy suggests adaptations for a semi-aquatic or terrestrial existence, with some species possibly being amphibious predators. The discovery of proterochampsid remains has contributed significantly to our understanding of the evolutionary history of archosaurs and the complex ecosystems that existed before the rise of dinosaurs. Their presence in the Late Triassic highlights the variety of reptilian forms that coexisted with early dinosaurs and other prehistoric creatures.