Sphenacodontidae

Common card · No. 388024

Sphenacodontidae (Greek: "wedge point tooth") is an extinct family of carnivorous sphenacodontian synapsids, known from the latest Carboniferous (or earliest Permian) to the early Middle Permian. Primitive forms were generally small (60 cm to 1 meter), but during the later part of the early Permian these animals grew progressively larger (up to 3 meters or more), to become the apex predators of terrestrial environments. Sphenacodontid fossils are so far known only from North America and Europe, and possibly South America.

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