Ptychodus rhombodus Underwood and Cumbaa 2010 (mackerel shark)

Chondrichthyes - Lamniformes - Ptychodontidae

Full reference: C. J. Underwood and S. L. Cumbaa. 2010. Chondrichthyans from a Cenomanian (Late Cretaceous) bonebed, Saskatchewan, Canada. Palaeontology 53:903-944

Belongs to Ptychodus according to C. J. Underwood and S. L. Cumbaa 2010

Sister taxa: Buffonites, Ptychodus altior, Ptychodus anonymus, Ptychodus articulatus, Ptychodus belluccii, Ptychodus concentricus, Ptychodus decurrens, Ptychodus elevatus, Ptychodus latissimus, Ptychodus mahakalensis, Ptychodus mammillaris, Ptychodus marginalis, Ptychodus martini, Ptychodus mortoni, Ptychodus occidentalis, Ptychodus papillosus, Ptychodus parvulus, Ptychodus paucisulcatus, Ptychodus pauli, Ptychodus polygyrus, Ptychodus rugosus, Ptychodus schlottheimii, Ptychodus whipplei

Type specimen: RSM P2989.51, a tooth. Its type locality is Bainbridge River Bonebed, which is in a Cenomanian coastal mudstone in the Ashville Formation of Canada.

Ecology: nektonic carnivore

Distribution:

• Cretaceous of Canada (1: Saskatchewan collection), United States (1: Colorado)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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