Cycloptychius

Cycloptychius; Temporal range: Tournaisian–Moscovian PreꞒ Ꞓ O S D C P T J K Pg N Possible Artinskian occurrence
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Family:	†Rhadinichthyidae
Genus:	†Cycloptychius; Young, 1866
Species
	†C. bidens Matveeva, 1958; †C. carbonarius Young, 1866; †C. concentricus Traquair, 1881; ?†C. loocki Evans, 2005;

Cycloptychius is an extinct genus of prehistoric freshwater & marine ray-finned fish that existed throughout much of the Carboniferous period in Eurasia, and possibly into the Early Permian in South Africa.^[2]^[1] It was a member of the Rhadinichthyidae, a family of basal ray-finned fish that was formerly placed in the now-paraphyletic order Palaeonisciformes.^[3]^[4]

Quick facts Scientific classification, Species ...

It contains the following species:^[5]

†C. bidens Matveeva, 1958 - Early Carboniferous (Tournaisian) of Krasnoyarsk Krai, Russia (Os’kin Formation)
†C. carbonarius Young, 1866 - Late Carboniferous (Moscovian) of England (North Staffordshire Coalfield)
†C. concentricus Traquair, 1881 - Early Carboniferous (Viséan) of Scotland (Glencartholm Volcanic Beds)
?†C. loocki Evans, 2005 - Early Permian (Artinskian) of South Africa (Whitehill Formation)^[6]

See also