From Simple English Wikipedia, the free encyclopedia

Actinopteri is a group of fish. It is the sister taxon of Cladistia.

Atlantic sturgeon flipped.jpg
Atlantic sturgeon (Chondrostei)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
(unranked): Actinopteri
Cope, 1871

They have a symplectic, a bone behind the upper part of the jaw that most fishes do not have.[1] They have scales and ray fins, because they are part of the Actinopterygii class.[2]

References[change | change source]

  1. Eaton, Theodore H. (1945). "The Symplectic in Coelacanthids and Actinopteri". Copeia. 1945 (1): 22–25. doi:10.2307/1438167. ISSN 0045-8511. JSTOR 1438167.
  2. "Welcome to CK-12 Foundation | CK-12 Foundation". Retrieved 2022-10-14.