Acipenseriformes
Order of fishes / From Wikipedia, the free encyclopedia
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Acipenseriformes /æsɪˈpɛnsərɪfɔːrmiːz/ is an order of basal[1] ray-finned fishes that includes living and fossil sturgeons and paddlefishes (Acipenseroidei), as well as the extinct families Chondrosteidae and Peipiaosteidae.[2][3][4] They are the second earliest diverging group of living ray-finned fish after the bichirs. Despite being early diverging, they are highly derived, having only weakly ossified skeletons that are mostly made of cartilage, and in modern representatives highly modified skulls.[5]
Quick Facts Scientific classification, Subgroups ...
Acipenseriformes | |
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Atlantic sturgeon (Acipenser oxyrhynchus) | |
American paddlefish (Polyodon spathula) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Subclass: | Chondrostei |
Order: | Acipenseriformes L. S. Berg, 1940 |
Subgroups | |
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