this small reptile holds a fundamental position in the study of early archosaur evolution

the most famous of the dromosaurids

hace unos 130 a 125 millones de años

in what is today Asia

Esta cresta varía en forma y tamaño entre las distintas especies de Chasmosaurus y jugaba un papel importante en la comunicación visual y posiblemente en la termorregulación

Keichosaurus hui Scale:1:1 this small reptile holds aKeichosaurus hui is a small diapsid marine reptile that lived during the Middle Triassic , approximately 245240 million years ago, in what is now southern China. It belongs to the group of primitive sauropterygians within the Pachypleurosauridae family and is one of the best known marine reptiles thanks to the abundance and exceptional preservation of its fossils, primarily from the Guanling Formation (Guizhou Province). Recent studies consider it a