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
DOI: 10.1111/j.1475-4983.2005.00475.x