Search Result for "paleocene": 
Wordnet 3.0

NOUN (1)

1. from 63 million to 58 million years ago; appearance of birds and earliest mammals;
[syn: Paleocene, Paleocene epoch]



WordNet (r) 3.0 (2006):

Paleocene
    n 1: from 63 million to 58 million years ago; appearance of
         birds and earliest mammals [syn: Paleocene, Paleocene
         epoch]