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Definition of: saurischian
(sô·ris′kē·ən) adjective Paleontol.
Of, pertaining to, or belonging to an order (Saurischia) of reptilelike dinosaurs that flourished through most of the Mesozoic era.
—noun A member of this order. [<NL <Gk. sauros a lizard + ischion a hip]
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