Lettuce Patch (Miocene of the United States)

Where: Grand County, Colorado (40.2° N, 106.1° W: paleocoordinates 40.8° N, 103.1° W)

• coordinate based on political unit

When: Troublesome Formation, Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial

Size class: macrofossils

Primary reference: J. Munthe. 1988. Miocene mammals of the Split Rock area, Granite Mountains basin, central Wyoming. University of California Publications in Geological Sciences 126:1-136 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18941: authorized by John Alroy, entered by John Alroy on 27.09.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• apparently described by Robinson in a 1968 field conference guidebook
 Rodentia - Sciuridae
Protospermophilus kelloggi Black 1963 squirrel
 Rodentia - Heteromyidae
Harrymys sp. Munthe 1988 rodent
 Lipotyphla - Erinaceidae
Brachyerix macrotis Matthew 1933 hedgehog