Search Result for "cambrian_period":
Wordnet 3.0

NOUN (1)

1. from 544 million to about 500 million years ago; marine invertebrates;
[syn: Cambrian, Cambrian period]



WordNet (r) 3.0 (2006):

Cambrian period
    n 1: from 544 million to about 500 million years ago; marine
         invertebrates [syn: Cambrian, Cambrian period]