ORDER ORNITHISCHIA
(noun)Definitions
There is 1 meaning of the phrase
Order Ornithischia.
Order Ornithischia - as a noun
Extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
Synonyms (Exact Relations)
ornithischia