where synapsid reptiles are abundant

probably as a result of climatic changes and environmental pressures

such as the jaw and crest

Los fósiles de Arthropleura han sido descubiertos en varios lugares

A notable feature of Zygophyseter varolai is its elongated lower jaw

Herrerasaurus ischigualastensis Scale:1:35 where synapsid reptiles are abundantHerrerasaurus ischigualastensis is a dinosaur that lived during the Triassic period, approximately between 231 and 220 million years ago, in what is now Argentina. This dinosaur is significant because it is one of the oldest known dinosaurs and arouses great interest in paleontology due to its importance in understanding the early stages of dinosaur evolution. Herrerasaurus belongs to the group of theropod dinosaurs, which are the bipedal carnivores