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†family Helicoprionidae Karpinsky 1911 (chimaera)

Chondrichthyes - Eugeneodontiformes

PaleoDB taxon number: 118044

Synonym: Agassizodontidae Zangerl 1981 (taxon 149811)

Parent taxon: Eugeneodontiformes according to W. M. Itano and S. G. Lucas 2018

Sister taxa: Caseodontoidea, Edestoidea, Edistidae, Pseudodontichthys

Subtaxa: Agassizodus, Arpagodus, Campyloprion, Helicoprion, Hunanohelicoprion, Parahelicoprion, Sarcoprion, Sinohelicoprion, Toxoprion

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Type: Helicoprion

Ecology: nektonic carnivore