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nounfrom 58 million to 40 million years ago; presence of modern mammals
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Definition that contains eocene
- eohippus earliest horse; extinct primitive dog-sized four-toed Eocene animal
- order chiroptera an old order dating to early Eocene: bats: suborder Megachiroptera (fruit bats); suborder Microchiroptera (insectivorous bats)
- dawn horse earliest horse; extinct primitive dog-sized four-toed Eocene animal
- order dinocerata small order of primitive ungulates of the Paleocene and Eocene
- dinocerata small order of primitive ungulates of the Paleocene and Eocene
- uintatherium type genus of the Uintatheriidae; extinct large herbivorous ungulates somewhat resembling elephants; from the Eocene in Wyoming
- chiroptera an old order dating to early Eocene: bats: suborder Megachiroptera (fruit bats); suborder Microchiroptera (insectivorous bats)
- genus uintatherium type genus of the Uintatheriidae; extinct large herbivorous ungulates somewhat resembling elephants; from the Eocene in Wyoming