Chondrichthyes - Petalodontiformes - Janassidae

Full reference: J. M. Hodnett, R. Toomey, R. Olson, J. S. Tweet, and V. L. Santucci. 2023. Janassid petalodonts (Chondrichthyes, Petalodontiformes, Janassidae) from the middle Mississippian (Viséan) Ste. Genevieve Formation, Mammoth Cave National Park, Kentucky, USA. Historical Biology 36(9):1783-1792

Parent taxon: Janassidae according to J. M. Hodnett et al. 2023

Sister taxa: Ctenopetalus, Cymatodus, Dactylodus, Fissodus, Gamphacanthus, Gomphacanthus, Janassinae, Petalodopsis, Phoderacanthus, Platacanthus, Pnigeacanthus, Pristicladodus, Stichacanthus, Thoracodus

Subtaxa: Cavusodus Cholodus Cypripediodens

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Type: Cholodus

Ecology: nektonic carnivore

Distribution: found only at Once-a-week Quarry (Carboniferous of the United Kingdom)

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