eocene epoch definition

  • noun:
    • from 58 million to 40 million years back; existence of modern-day animals
    • from 58 million to 40 million years back; presence of modern animals
    • from 58 million to 40 million years ago; existence of modern mammals
53 votes

How would you define eocene epoch?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!