Definition of "ornithischians" [ornithischians]

• Plural form of ornithischian. (noun)

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• "Matt: the lack of ornithischians is, I'm afraid, a quirk."
• "Must ask, though, if only to rib you: do you have any posts that are primarily on ornithischians?"
• "Statistical comparisons were made among osteichthyans using ganoid scales, caudates using vertebrae, ornithischians using teeth, and testudinates using shell fragments."