Noun: psittacosaurus
- Primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal
"The psittacosaurus is considered an early ancestor of later ceratopsians";
- psittacosaur
Derived forms: psittacosauruses
Type of: ceratopsian, horned dinosaur
Part of: genus Psittacosaurus
Encyclopedia: Psittacosaurus