Classification of Grande and Bemis 1996
Unr. Chondrostei Müller 1844
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Or. Acipenseriformes Berg 1940
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Unr. Acipenseristomi Grande and Bemis 1996
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Subor. Acipenseroidei
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Fm. Acipenseridae Bonaparte 1831
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Subfm. Acipenserinae Bonaparte 1838
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Tr. Scaphirhynchini Bonaparte 1846
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G. †Protoscaphirhynchus Wilimovsky 1956
G. Pseudoscaphirhynchus Nikolskii 1900
G. Scaphirhynchus Heckel 1836
Invalid names: Acipenserini [empty]
Fm. Polyodontidae Bonaparte 1838 [paddlefish]
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Subfm. †Protopsephurinae Grande and Bemis 1996
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G. †Protopsephurus Lu 1994
Invalid names: Peipiaosteoidei Grande and Bemis 1996 [empty]
Subor. †Chondrosteoidei Grande and Bemis 1991
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