Alphadon (meaning "first tooth") was a genus of small, primitive mammal that was a member of the metatherians, a group of mammals that includes modern-day marsupials. Its fossils were first discovered and named by George Gaylord Simpson in 1929.[2]
Alphadon
Mesozoic Creatures
for Mesozoic Creatures in Cocoricó and the Prehistoric Park Adventure
Suggested by manassestobias
Julio and the Herd Discovers in Extinct Creatures on safety on the Present
