crossopterygian

/kro-sop-tuh-rij-ee-uhn/US // krɒˌsɒp təˈrɪdʒ i ən //UK // (krɒˌsɒptəˈrɪdʒɪən) //

交叉翅类动物,横翅目动物,交叉蝶形类,横翅目

Definitions

n.名词 noun

1
- : any fish of the group Crossopterygii, extinct except for the coelacanth, regarded as being ancestral to amphibians and other land vertebrates.

adj.形容词 adjective

With these remains are found also scales possibly belonging to a Crossopterygian fish (Eriptychius).
The braincase of the Carboniferous crossopterygian Megalichthys nitidus.
These are found in the garpike and in many genera of extinct Ganoid and Crossopterygian fishes.
In every modern Dipnoan, Crossopterygian, and Ganoid the air-bladder has an effective pneumatic duct.
It is not unlikely that the Crossopterygian gave rise to Amphibian and Dipnoan alike.