Search Result for "osteostraci": 
Wordnet 3.0

NOUN (1)

1. extinct group of armored fish-like vertebrates; taxonomy is not clear;
[syn: Osteostraci, suborder Osteostraci, Cephalaspida, suborder Cephalaspida]


WordNet (r) 3.0 (2006):

Osteostraci n 1: extinct group of armored fish-like vertebrates; taxonomy is not clear [syn: Osteostraci, suborder Osteostraci, Cephalaspida, suborder Cephalaspida]