Actinopteri

Actinopteri /æktɪˈnɒptəraɪ/ is the sister group of Cladistia (bichirs) in the class Actinopterygii (ray-finned fish).

Actinopteri
Atlantic sturgeon (Chondrostei)
Atlantic salmon (Neopterygii)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
(unranked): Actinopteri
Cope, 1871
Subclasses

Dating back to the Permian period, the Actinopteri comprise the Chondrostei (sturgeons and paddlefish), the Holostei (bowfins and gars), and the teleosts. In other words all extant ray-finned fish minus the bichirs.

In this clade the lungs have evolved into a swim bladder.[1]

Classification

The following cladogram[2][3][4][5] summarizes the evolutionary relationships of extant Actinopteri. Divergence time for each clade in mya are based on:[6]

Actinopteri 400 mya
Chondrostei

Acipenseriformes (sturgeons, paddlefish)

Neopterygii 360 mya
Holostei 275 mya
Ginglymodi

Lepisosteiformes (gars, alligator gars)

Halecomorphi

Amiiformes (bowfin)

Teleostei 310 mya

References
  1. Dorsoventral inversion of the air-filled organ (lungs, gas bladder) in vertebrates: RNA-sequencing of laser capture microdissected embryonic tissue
  2. Betancur-R (2016). "Phylogenetic Classification of Bony Fishes Version 4". Archived from the original on 2017-07-11. Retrieved 2017-03-29.
  3. Nelson, Joseph, S. (2016). Fishes of the World. John Wiley & Sons, Inc. ISBN 9781118342336.{{cite book}}: CS1 maint: multiple names: authors list (link)
  4. "Actinopterygii". Integrated Taxonomic Information System. Retrieved 3 April 2006.
  5. R. Froese and D. Pauly, ed. (February 2006). "FishBase".
  6. Thomas J. Near; et al. (2012). "Resolution of ray-finned fish phylogeny and timing of diversification". PNAS. 109 (34): 13698–13703. doi:10.1073/pnas.1206625109. PMC 3427055. PMID 22869754.
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