Discovery of a single specimen of brachyuran decapod from the Campanian Millwood Member in southern Manitoba, Canada, permits description of a new genus and species, Cretacocarcinus smithi. Comparison of sternal architecture and general carapace morphology with potentially related taxa documents that the new genus, along with Camarocarcinus Holland and Cvancara, form a new family, Camarocarcinidae, tentatively assigned to the Raninoidea. The Camarocarcinidae are interpreted to have originated in the upper Midcontinental Seaway in the Late Cretaceous, survived the K-T extinction event(s), and dispersed into southern North Dakota, USA; Greenland; and Denmark in the Paleocene.
Canadian Journal of Earth Sciences
Feldmann, Rodney; Li, Rong-Yu; Schweitzer, Carrie E. (2007). A New Family, Genus, and Species of Crab (Crustacea, Decapoda, Brachyura) from the Upper Cretaceous (Campanian) of Manitoba, Canada. Canadian Journal of Earth Sciences 44(12) 1741-1752. doi: 10.1139/e07-046. Retrieved from https://oaks.kent.edu/geolpubs/151