Agate (1 Mile NE) ( of the United States)

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.3° N, 98.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Harrison Formation, Harrisonian (24.8 - 20.4 Ma)

Environment/lithology: terrestrial

Primary reference: A. E. Wood. 1936. Geomyid rodents from the Middle Tertiary. American Museum Novitates 866 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 17734: authorized by John Alroy, entered by John Alroy on 18.10.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia - Heteromyidae
Dikkomys matthewi n. sp. Wood 1936 rodent
"Lower Harrison... in ant hills at edge of breaks"