Chondrichthyes - Pristiophoriformes - Pristiophoridae

Full reference: S. Applegate and T. Uyeno. 1968. The First Discovery of a Fossil Tooth belonging to the Shark Genus Heptracnchias, with a New Pristiophorus Spine, Both from the Oligocene of Japan. Bulletin of the National Science Museum, Tokyo 11(2):195-201

Belongs to Pristiophorus according to I. W. Keyes 1982

See also Applegate and Uyeno 1968 and Uyeno 1972

Sister taxa: Pristiophorus cirratus, Pristiophorus japonicus, Pristiophorus lacipidinensis, Pristiophorus laevis, Pristiophorus lanceolata, Pristiophorus lanceolatus, Pristiophorus napierensis, Pristiophorus nudipinnis, Pristiophorus pricei, Pristiophorus schroederi, Pristiophorus smithi, Pristiophorus striatus, Pristiophorus suevicus, Pristiophorus tumidens

Type specimen: NSMT Pal 7422, an other (spine). Its type locality is Kashima, which is in a Priabonian marine horizon in the Poronai Formation of Japan.

Ecology: nektobenthic carnivore

Distribution: found only at Kashima

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Specimen images are retrieved through the ePANDDA API.