Actinopteri /æktɪˈnɒptər/ is the sister group of Cladistia. Dating back to the Permian period, the Actinopteri comprise the Chondrostei (sturgeons and paddlefishes) and the Neopterygii (bowfin, gars, and teleosts). In other words, the Actinopteri include all extant Actinopterygians, minus the Polypteridae (bichirs). The Actinopteri includes:[1][2][3][4]

Atlantic sturgeon flipped.jpg
Atlantic sturgeon (Chondrostei)
Salmo salar flipped.jpg
Atlantic salmon (Neopterygii)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
(unranked): Actinopteri
Cope, 1871
Actinopteri 400 mya

Acipenseriformes (sturgeons, paddlefishes) Atlantic sturgeon flipped.jpg

Neopterygii 360 mya
Holostei 275 mya

Lepisosteiformes (gars) Longnose gar flipped.jpg

Amiiformes (bowfins) Amia calva 1908 flipped.jpg

Teleostei 310 mya Cyprinus carpio3.jpg


  1. ^ Betancur-R (2016). "Phylogenetic Classification of Bony Fishes Version 4".
  2. ^ Nelson, Joseph, S. (2016). Fishes of the World. John Wiley & Sons, Inc. ISBN 9781118342336.
  3. ^ "Actinopterygii". Integrated Taxonomic Information System. Retrieved 3 April 2006.
  4. ^ R. Froese and D. Pauly, editors (February 2006). "FishBase".