Ptychodus atcoensis Hamm 2009 (mackerel shark)

Chondrichthyes - Lamniformes - Ptychodontidae

Belongs to Ptychodus according to J. D. Carrillo-Briceño and S. G. Lucas 2013

See also Hamm and Cicimurri 2011

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 mediterraneus, Ptychodus mortoni, Ptychodus occidentalis, Ptychodus papillosus, Ptychodus parvulus, Ptychodus paucisulcatus, Ptychodus pauli, Ptychodus polygyrus, Ptychodus rhombodus, Ptychodus rugosus, Ptychodus schlotheimii, Ptychodus sulcatus, Ptychodus whipplei

Type specimen: SMU 75598, a tooth. Its type locality is Ash Grove Cement Company quarry, which is in a Coniacian carbonate limestone in the Atco Formation of Texas.

Ecology: nektonic carnivore

Distribution:

• Cretaceous of United States (1: Texas collection), Venezuela (1)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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