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Platysomus; Temporal range: Early Carboniferous–Late Permian PreꞒ Ꞓ O S D C P T J K Pg N
	Platysomus gibbosus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	†Platysomiformes
Family:	†Platysomidae
Genus:	†Platysomus; Agassiz, 1833
Type species
	†Platysomus striatus; Agassiz, 1833
Other species
	†Platysomus bashkirus Minich, 1992; †Platysomus biarmicus Eichwald, 1860; †Platysomus palmaris Cope, 1891; †Platysomus solikamskensis Minich, 1998; †Platysomus soloduchi Minich, 1992;
Synonyms
	†Schaefferichthys Dalquest, 1966;

Platysomus (from Greek: πλατύς platys, 'broad' and Greek: σῶμα sôma 'body')^[1] is an extinct genus of ray-finned fish that lived in the Carboniferous and Permian periods. Fossils have been found worldwide.

Platysomus was about 18 centimetres (7.1 in) long, and shaped similarly to the discus fish, having the same flattened body and elongated dorsal and anal fins. Its jaws were placed vertically under the braincase, giving it a wide gape. Platysomus is thought to have fed on plankton, and lived in both fresh and salt water.^[2]

References

^ Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 135. Retrieved 30 December 2021.
^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 35. ISBN 1-84028-152-9.

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[1] Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 135. Retrieved 30 December 2021.

[EoDP-2] Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 35. ISBN 1-84028-152-9.

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