the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > [adjective] > ganoid > of fossil or extinct types of (5)
(a) n. any of various extinct holostean fishes of the family Pycnodontidae or order Pycnodontiformes, which are usually deep-bodied and characterized…
Of, belonging to, or characteristic of the extinct family Platysomidae of palaeoniscoid fishes, known from fossil remains of the Carboniferous…