Eocene epoch- 54.9 to 38 million years ago
All around, the earth is rejuvenating after the Great Cataclysm. New plants grow. Birds dominate the skies.
Miacis
Scientists have determined that about 60 million years ago a small mammal called Miacis, the genus that became the ancestor of the animals we know today as dogs, jackals, wolves, and foxes, The canids.
Canids
Miacis did not leave direct descendants, but doglike canids evolved from it. By about 30 to 40 million years ago Miacis had evolved into the first true dog called Cynodictis. This was a medium-size animal.

To The Cynodictis & Tomarctus.This Way