Overview
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Semionotiformes ("flag-back form") is an order of primitive, ray-finned, primarily freshwater fish from the Triassic to the Cretaceous. The most well-known genus is Semionotus of Europe and North America.
Hadrodus prisca tooth, Menuha Formation (Upper Cretaceous), southern Israel.
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Hadrodus prisca tooth, Menuha Formation (Upper Cretaceous), southern Israel.
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References
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- Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 364: p.560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class. Retrieved 2011-05-17.
Taxonomy
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The Order Semionotiformes is further organized into finer groupings including:
- Family (2): Dapediidae · Semionotidae
- Species: ZipcodeZoo has pages for 22 species and subspecies in the Order Semionotiformes.
Families
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Dapediidae
Semionotidae
At least 18 species and subspecies belong to the Family Semionotidae.
More info about the Family Semionotidae may be found here.
References
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- Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 364: p.560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class. Retrieved 2011-05-17.
Sources
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