Harrison Formation (Migmacastor Locality) ( of the United States)

Also known as Near East Section Line

Where: Sioux County, Nebraska (42.5° N, 103.7° W: paleocoordinates 43.4° N, 98.7° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• said to be "late Arikareean"

Environment/lithology: terrestrial; lithology not reported

• no environment described
• none given

Size class: macrofossils

Collection methods: additional fauna not described

Primary reference: W. W. Korth and N. Rybczynski. 2003. A new, unusual castorid (Rodentia) from the earliest Miocene of Nebraska. Journal of Vertebrate Paleontology 23(3):667-675 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34807: authorized by John Alroy, entered by John Alroy on 29.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia - Castoridae
Migmacastor procumbodens n. gen. n. sp.
Migmacastor procumbodens n. gen. n. sp. Korth and Rybczynski 2003 beaver