|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Chondrichthyes - Sphenacanthidae
It was assigned to Cestraciontidae by Woodward (1889); to Heterodontidae by Jordan (1963); to Ctenacanthida by Sepkoski (2002); and to Sphenacanthidae by Ivanov (1999), Pauliv et al. (2012), Ivanov et al. (2013) and Ivanov (2017).
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