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
Creatures featured in Episode 18: March of the Dinosaurs
for Creatures featured in Episode 18: March of the Dinosaurs in Dinosaurs Unleashed
Suggested by alecgroskreutz1
Dinosaurs Unleashed is the well shock full documentary.
