Chondrichthyes - Squalomorphii

Parent taxon: Squalomorphii according to D. Thies 1983

Sister taxon: Synechodontiformes

Subtaxa: Chlamydoselachidae, Eonotidanus, Hexanchidae, Pachyhexanchus, Paraheptranchias, Paranotidanus, Pseudonotidanidae, Thrinax, Welcommia, Weltonia

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Ecology: nektonic carnivore