1. dinosaurian - Noun
2. dinosaurian - Adjective
One of the Dinosauria.
Source: Webster's dictionaryAt the same time, several groups of dinosaurian herbivores evolved more sophisticated ways to orally process food. Source: Internet
Dinosaurs may have appeared as early as 243 million years ago, as evidenced by remains of the genus Nyasasaurus from that period, though known fossils of these animals are too fragmentary to tell if they are dinosaurs or very close dinosaurian relatives. Source: Internet