A Semi-Aquatic Life Habit for Psittacosaurus

摘要

Psittacosaurus has been perceived historically as a terrestrial biped that lived in the seasonally dry alluvial to desert paleoenvironments of early Cretaceous Asia. However, because hundreds of specimens are now known from lacustrine deposits in northeastern China, the possibility that Psittacosaurus was a semi-aquatic dinosaur must be considered more seriously than it has been in the past.