Cylindrodonts (Cylindrodontidae, Rodentia) and a New Genus of Eomyid, Paranamatomys, (Eomyidae, Rodentia) from the Chadronian of Sioux County, Nebraska

Authors

William W. Korth, Rochester Institute of Vertebrate Paleontology

Date of this Version

1992

Comments

1992. Transactions of the Nebraska Academy of Sciences, XIX: 75-82. Copyright © 1992 Korth.

Abstract

Cylindrodon galbreathi Ostrander is shown to be a junior synonym of C. nebraskensis Hough and Alf, and the first specimen of Ardynomys occidentalis is reported from the Chadronian of Nebraska. A restudy of the holotype of Cupressimus storeri Ostrander has revealed that this species is not referable to Cupressimus Storer but is referred to a new genus, Paranamatomys, which is referred to a new tribe of eomyids, the Namatomyini. Only six species of rodents have been documented from the Chadronian of Nebraska, far fewer than other faunas of the same age.