Ornithischia (Noun)
Meaning
Extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods).
Classification
Nouns denoting animals.
Examples
- Ornithischia comprised the greatest diversity of non-saurischian herbivores throughout the Mesozoic era.
- It has long been proposed that both Marginocephalia and Cerapoda likely derive from eornithopods with unrevised bipedality early within the scope of all major lines in ornithischia evolution.
- Non-neocerapods developed nearly consistent habits not frequently revisited before divergences concluding core portions eoronithischians endured transition establishing divisions away.
- Plant-eaters belonging to Ornithischia survived during a period of relative aridity on Earth, eventually reaching large densities from their diversity by Late Jurassic.
- Within Ornithischia the most diverse clades on Earth during any major time period over the past two hundred million years exist having varied greatly.