Ischyodus rayhaasi Hoganson and Erickson 2005 (plownose chimaera)

Chondrichthyes - Chimaeriformes - Callorhynchidae

Full reference: J. W. Hoganson and J. M. Erickson. 2005. A new species of Ischyodus (Chondrichthyes: Holocephali: Callorhynchidae) from upper Maastrichtian shallow marine facies of the Fox Hills and Hell Creek formations, Williston Basin, North Dakota, USA. Palaeontology 48(4):709-721

Belongs to Ischyodus according to J. W. Hoganson et al. 2019

See also Hoganson and Erickson 2005

Sister taxa: Ischyodus avitus, Ischyodus beaumonti, Ischyodus bifurcatus, Ischyodus bohemicus, Ischyodus dufrenoyi, Ischyodus egertoni, Ischyodus emarginatus, Ischyodus incisus, Ischyodus latus, Ischyodus mortoni, Ischyodus panus, Ischyodus quenstedti, Ischyodus thurmanni, Ischyodus townsendi, Ischyodus yanschini, Ischyodus zinsmeisteri

Type specimen: ND 99-6.1, a set of teeth (tooth plate). Its type locality is NDSFC Loc. LO64, Logan County (NDGS L140 general), which is in a Maastrichtian paralic sandstone in the Fox Hills Formation of North Dakota.

Ecology: nektobenthic carnivore

Distribution:

• Cretaceous of United States (11: North Dakota, South Dakota collections)

Total: 11 collections including 12 occurrences

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Specimen images are retrieved through the ePANDDA API.


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