Cretorectolobus is an extinct carpet shark. It was described by G.R. Case in 1978, and the type species is C. olsoni, which existed during the Campanian in Canada and the United States. Another species, C. gracilis, was described by Charlie J. Underwood and Mitchell in 1999, from the Hauterivian to Barremian strata of the Speeton Clay Formation of England. The species epithet refers to the shark's teeth, which Underwood and Mitchell described as gracile and narrow in form.C.J. Underwood & Mitchell, 1999. Albian and Cenomanian selachian assemblages from north-east England. Special Papers in Palaeontology, 60, January 1999: 9-56. A new species, C. robustus, was described from the Cenomanian of Canada by Underwood and Stephen L. Cumbaa in 2010.Charlie J. Underwood and Stephen L. Cumbaa (2010). "Chondrichthyans from a Cenomanian (Late Cretaceous) bonebed, Saskatchewan, Canada". Palaeontology 53 (4): 903–944. .
Species Cretorectolobus olsoni Case, 1978 Cretorectolobus gracilis Underwood & Mitchell, 1999 Cretorectolobus robustus Underwood & Cumbaa, 2010
Fossil distribution Fossils of Cretorectolobus have been found in:Cretorectolobus at Fossilworks.org Hauterivian-Barremian Speeton Clay Formation, England
Albian Cedar Mountain Formation, Utah Kolbay, Kazakhstan
Cenomanian Saskatchewan, Canada
Campanian Aguja Formation, Mexico Dinosaur Park Formation, Alberta Judith River Formation, Saskatchewan, Canada and Montana, United States Mesaverde Group, Wyoming Åsen and Ignaberga, Sweden
Maastrichtian Kemp Clay Formation, Texas Bakla Hill, Ukraine
References