Chondrichthyes - Petalodontiformes - Janassidae
Hodnett, et al. 2024 attribute this to Jaekel 1898, but PBDB does not allow a re-ranked family to belong to the same family, making this a new subfamily.
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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 (ViseĢan) 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: Cholodinae, Ctenopetalus, Cymatodus, Dactylodus, Fissodus, Gamphacanthus, Gomphacanthus, Petalodopsis, Phoderacanthus, Platacanthus, Pnigeacanthus, Pristicladodus, Stichacanthus, Thoracodus
Subtaxa: Janassa Strigilodus
Type: Janassa
Ecology: nektonic carnivore
Distribution:
• Permian of Germany (13 collections), Greenland (1), the Russian Federation (1), the United Kingdom (3), United States (9: Kansas, Texas, Wyoming)
• Carboniferous of Japan (1), the United Kingdom (9), United States (5: Kentucky, Montana, Nebraska, South Dakota)
Total: 42 collections including 48 occurrences