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Eocene
E·o·cene [  ə sn ]


noun 
Definition:
 
geologic epoch: the epoch of geologic time, 55 million to 38 million years ago, during which the ancestors of many modern animals appeared

E·o·cene adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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