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theriodontia |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Theriodontia \The`ri*o*don"ti*a\, n. pl [NL., fr Gr ? (dim. of ? a beast) + ?, ?, a tooth.] (Paleon.) An extinct order of reptiles found in the Permian and Triassic formations in South Africa. In some respects they resembled carnivorous mammals. Called also {Theromorpha}. Note: They had biconcave vertebr[ae], ambulatory limbs, and a well-developed pelvis and shoulder girdle. Some of the species had large maxillary teeth. The head somewhat resembled that of a turtle. The Dicynodont is one of the best-known examples. See {Dicynodont}.