USNM 41356 (Eocene of the United States)

Also known as PW 968

Where: Sweetwater County, Wyoming (41.9° N, 108.2° W: paleocoordinates 46.7° N, 91.7° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Ramsey Ranch Member (Wasatch Formation), Wasatchian (55.8 - 50.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: wet floodplain; lithified, carbonaceous siltstone

Size class: macrofossils

Preservation: adpression

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Great Divide Basin; Siberia Ridge Road; NMNH Accession #OR420051

Primary reference: P. Wilf. 2000. Late Paleocene-early Eocene climate changes in southwestern Wyoming: Paleobotanical analysis. Geological Society America Bulletin 112(2):292-307 [P. Wilf/P. Wilf/P. Wilf]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 28735: authorized by Peter Wilf, entered by Peter Wilf on 20.02.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Angiospermae
 Zingiberales - Zingiberaceae
Zingiberopsis isonervosa Hickey 1977
Morphotype #RR03; see Table A3 of Wilf 2000 (reference 7696) for additional information
 Fagales - Juglandaceae
Platycarya americana Hickey 1977
Morphotype #RR01; see Table A3 of Wilf 2000 (reference 7696) for additional information
Polypodiopsida
 Schizaeales - Polypodiidae
Lygodium kaulfussi Heer climbing fern
Morphotype #RR07; see Table A3 of Wilf 2000 (reference 7696) for additional information