Cro

Cro is an educational cartoon series created in 1993 by Children's Television Workshop, which ended in 1994.

Premise
Two scientists discover a frozen woolly mammoth named Phil in the Arctic which, when thawed out, can speak, and would relay stories about his fellow mammoths and his friend, a Cro-Magnon named Cro who lives with a family of Neanderthals. The stories relate to a physics, mechanical engineering, or technological issue.