Cimolomys
Cimolomys is a mammal genus from the Upper Cretaceous of North America. It was a member of the extinct order Multituberculata within the suborder Cimolodonta and family Cimolomyidae.
The genus Cimolomys was named by Othniel Charles Marsh in 1889.Species
The species Cimolomys clarki was named by Sahni in 1972. Fossil remains were found in Campanian-Maastrichtian strata of Texas and Wyoming. Possible remains have also come from New Jersey. It probably weighed about 300 g, the same as a malnourished rat.
The species Cimolomys gracilis was named by Marsh O.C. in 1889, and has also been known as Cimolomys digona ; Meniscoessus brevis; Ptilodus gracilus ; and Selenacodon brevis. Remains were found in Maastrichtian strata of Montana, South Dakota and Wyoming and Saskatchewan, Canada. This species likely weighed around 415 g, as much as a modern rat.
The species Cimolomys milliensis was named by Eaton J.G. in 1993.. Remains were found in Campanian strata of Mill Creek, Utah.
The species Cimolomys trochuus was named by Lillegraven J.A. in 1969. Remains were found in Maastrichtian strata of North America. The holotype is in the collection of the University of Alberta.
