stegosauridæ

pl. [Modern Latin ste go saur (us); Lat. fem. pl. adj. suff. -idæ.] Palæont .: A family of Stegosaur i a (q. v.); vertebræ biconcave; ischia directed backward, with the sides meeting in the median line; astragalus coalesced with tibia, metatarsals short. Genera: Stegosaurus, some thirty feet long, well armed with enormous bucklers, some of which were spinous, from the Jura ic beds of the Rocky Mountains; Diracodon, and Amosaurus.