Cosmoptychius
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| Cosmoptychius Temporal range:
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|---|---|
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Family: | †Cosmoptychiidae Gardiner, 1963 |
| Genus: | †Cosmoptychius Traquair, 1877 |
| Species: | †C. striatus
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| Binomial name | |
| †Cosmoptychius striatus (Agassiz, 1835)
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| Synonyms | |
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Cosmoptychius is an extinct genus of freshwater and estuarine ray-finned fish that lived during the Mississippian epoch.[1][2] It contains a single species, C. striatus from the Visean of Scotland.[3] It has a wide stratigraphic range in the Wardie Shale, with many specimens known.[4][5]
Initially classified as either a palaeonisciform (a now-paraphyletic group of basal actinopterygians)[6] or the earliest stem-group neopterygian, it is now generally considered a stem-group actinopteran.[7]
References
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