USNM 41336 CENSUS (Eocene of the United States)

Also known as PW 9514

Where: Sweetwater County, Wyoming (41.9° N, 108.0° W: paleocoordinates 46.7° N, 92.0° 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• coordinate based on unpublished field data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 sandstone

Size class: macrofossils

Preservation: adpression

Reposited in the USNM

Collection methods: bulk, mechanical,

• only dicot leaves censused; see corresponding non-census locality for full species list and additional comments

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 28909: authorized by Peter Wilf, entered by Peter Wilf on 28.02.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Angiospermae
  -
"Dicotyledonae "RR40"" = Dicotyledoneae
"Dicotyledonae "RR40"" = Dicotyledoneae
Morphotype #RR40; see Wilf 2000 (reference 7696) for additional information
 Fagales - Juglandaceae
Platycarya americana Hickey 1977
Morphotype #RR01; see Wilf 2000 (reference 7696) for additional information
 Fagales - Betulaceae
Alnus "RR14" Miller 1754 alder
Morphotype #RR14; see Wilf 2000 (reference 7696) for additional information
 Oxalidales - Oxalidaceae
Averrhoites affinis Newberry 1868 wood sorrel
Morphotype #RR41; see Wilf 2000 (reference 7696) for additional information