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]