Did you mean: Heptagon
Heptodon
Heptodon is an extinct genus of tapir-type herbivore of the family Helaletidae endemic to North America during the Early Eocene. It lived from 50.3—48.6 mya, existing for approximately 1.7 million years.
Heptodon was about 1 metre in length, and... Wikipedia
Scientific name: Heptodon
Genus: †Heptodon; Cope 1882