| Part of Speech | Definition | |
| Noun | 1. From 58 million to 40 million years ago; presence of modern mammals.[Wordnet]. | |
Source: WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. | Top | |
Common Expressions: Eocene epoch
| Expressions | Definition | ||
| Eocene epoch | From 58 million to 40 million years ago; presence of modern mammals. Source: Wordnet 3.0 Copyright © 2006 by Princeton University. All rights reserved. | ||
Source: compiled by the editor from various references; see credits. | Top | ||
