Saurischia(redirected from Saurischians)
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Saurischiaan order of dinosaurs lacking a post-pelvic bone and having a normal PELVIC GIRDLE, unlike Ornithischia. The group includes the large four-footed dinosaurs such as Diplodocus.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005