†family Ptychodontidae (elasmobranch)

Chondrichthyes - Hybodontiformes - Ptychodontidae

Parent taxon: Hybodontoidea according to J. T. Thurmond and D. E. Jones 1981

See also Applegate 1970, Hay 1902, Herman 1975, Jordan 1963 and Woodward 1891

Sister taxa: Acrodontidae, Acrorhizodus, Arctacanthus, Asteracanthus semiverrucosus, Asteracanthus verrucosus, Diablodontus, Distobatidae, Homalodontidae, Hybodontidae, Hybodus strictus, Lonchidiidae, Polyacrodontidae, Trichorhipis, Tristychiidae

Subtaxa: Ptychodus

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Type: Ptychodus

Ecology: nektonic carnivore

Distribution:

• Miocene of France (1 collection)

• Paleocene of United States (1: Illinois)

• Cretaceous of Brazil (1), Canada (4: Manitoba, Saskatchewan), the Czech Republic (2), France (1), Germany (1), India (1), Japan (2), Jordan (1), Mexico (1), Sweden (1), the United Kingdom (2), United States (16: Alabama, Colorado, Georgia, Kansas, Mississippi, New Mexico, South Dakota)

Total: 35 collections including 47 occurrences

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