suborder osteostraci

1 definition found

suborder osteostraci - WordNet (r) 2.1 (2005) :

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