ornithischia

• Ornithischia

• ornithischia

• ornithischia

• Ornithischia

• Ornithischia

• Ornithischia

• ornithischia

• ornithischia

ornithischia

Noun

extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)

Synonyms:

• Ornithischia
• order Ornithischia