Ptychodus polygyrus Agassiz 1839 (elasmobranch)

Chondrichthyes - Hybodontiformes - Ptychodontidae

Full reference: L. Agassiz. 1839. Recherches Sur Les Poissons Fossiles. Tome III (livr. 10, 12). Imprimérie de Petitpierre, Neuchatel 141-156

Belongs to Ptychodus according to J. Herman 1975

See also Agassiz 1839, Applegate 1970, Hay 1902, Thurmond and Jones 1981 and Woodward 1889

Sister taxa: Ptychodus altior, Ptychodus anonymus, Ptychodus arcuatus, Ptychodus articulatus, Ptychodus belluccii, Ptychodus concentricus, Ptychodus decurrens, Ptychodus depressus, Ptychodus elevatus, Ptychodus gibberulus, Ptychodus latissimus, Ptychodus mahakalensis, Ptychodus mammillaris, Ptychodus marginalis, Ptychodus martini, Ptychodus mortoni, Ptychodus multistriatus, Ptychodus occidentalis, Ptychodus oweni, Ptychodus papillosus, Ptychodus parvulus, Ptychodus paucisulcatus, Ptychodus rugosus, Ptychodus spectabilis, Ptychodus whipplei

Type specimen: BMNH 4385, 4408, 4413, a set of teeth

Ecology: nektonic carnivore

Distribution:

• Cretaceous of United States (2: Alabama, New Mexico collections)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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