†suborder Hexanchoidei Hay 1902

Chondrichthyes - Hexanchiformes

Alternative spelling: Hexanchoidea

Full reference: O. P. Hay. 1902. Bibliography and Catalogue of the Fossil Vertebrata of North America. Bulletin of the United States Geological Survey 179:1-868

Parent taxon: Hexanchiformes according to S. Stumpf and J. Kriwet 2019

See also Hay 1902, Kumar and Loyal 1987 and Maisey 1986

Sister taxa: Chlamydoselachidae, Eonotidanus, Hexanchidae, Pachyhexanchus, Paraheptranchias, Paranotidanus, Pseudonotidanidae, Thrinax, Weltonia

Subtaxa: Crassodontidanidae

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• Jurassic of Germany (3 collections), Poland (2)

Total: 5 collections including 6 occurrences

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