Where: Nebraska (40.1° N, 96.6° W: paleocoordinates 5.0° N, 24.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Fort Riley Formation, Artinskian (290.1 - 279.3 Ma)

• Sweetognathus whitei, Sw. florensis conodonts

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Primary reference: A. K. Miller and W. Youngquist. 1949. American Permian nautiloids. Geological Society of America Memoir 41:1-218 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82796: authorized by Matthew Clapham, entered by Matthew Clapham on 01.08.2008

Creative Commons license: CC BY (attribution)