psittacosaur

Thesaurus

Noun

1.

psittacosaur - primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedalpsittacosaurusceratopsian, horned dinosaur - any of several four-footed herbivorous dinosaurs with enormous beaked skulls; of the late Cretaceous in North America and Mongoliagenus Psittacosaurus - most primitive genus of horned dinosaurs; early Cretaceous