Also known as UNSM Mo-163

Where: Morrill County, Nebraska (41.7° N, 103.0° W: paleocoordinates 42.6° N, 97.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Arikaree Group, Monroecreekian (26.3 - 24.8 Ma)

• "late early Arikareean" (= Monroecreekian)

•"Monroe Creek/Harrison formations, undifferentiated... middle Arikaree Group"

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; volcaniclastic sandstone

Size class: mesofossils

Reposited in the UNSM

Collection methods: bulk, anthill, sieve,

• rock censused consists of "concentrate," not the original sediment

Primary reference: B. E. Bailey. 2004. Biostratigraphy and biochronology of early Arikareean through late Hemingfordian small mammal faunas from the Nebraska Panhandle and adjacent areas. Paludicola 4(3):81-113 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 67637: authorized by John Alroy, entered by John Alroy on 29.11.2006

Creative Commons license: CC BY (attribution)