†family Sphenacanthidae Maisey 1982 (elasmobranch)

Chondrichthyes - Euselachii - Sphenacanthidae

Parent taxon: Euselachii according to A. O. Ivanov et al. 2013

See also Ginter et al. 2010 and Ivanov 1999

Sister taxa: Acronemus, Artiodus, Ctenacanthiformes, Dasyatiformes, Galei, Galeoidei, Hueneichthys, Hybodontida, Musteliformes, Neoselachii, Notidaniformes, Orectoloboidei, Protacrodontoidea, Scyliorhiniformes, Squatinoidei, Squatinorajiformes, Surcaudalus, Synechodontidae

Subtaxa: Khuffia Sphenacanthus

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Type: Sphenacanthus

Ecology: nektonic carnivore

Distribution:

• Permian of Brazil (2 collections), Oman (8), the Russian Federation (4), United States (1: Texas)

• Carboniferous of the United Kingdom (2)

• Devonian of the Russian Federation (1)

Total: 18 collections including 24 occurrences

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