First Human Giatrus (Ocean Studios English Dub)

First Human Giatrus was an anime series about a prehistoric family set in the stone age, based off a manga by Shunji Sonoyama, the anime lasted from October 5, 1974 to March 27, 1976 produced by TMS Entertainment and aired on TBS in Japan.

Ocean Studios (a.k.a. Ocean Productions Inc.)  produced a pilot for the show under the name "The First Family" featuring voices of Matt Hill , Richard Newman, Teryl Rathery, and Terry Klassen. It's unknown if this was aired.