USNM 41272 (Paleogene of the United States)

Also known as PW 9524, 9614

Where: Sweetwater County, Wyoming (41.6° N, 108.6° W: paleocoordinates 47.0° N, 90.7° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Fort Union Formation, Clarkforkian (56.2 - 54.9 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,

• Washakie Basin; 18 m above Big Multi Quarry; 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 28690: authorized by Peter Wilf, entered by Peter Wilf on 20.02.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
"Sabalites/Amesoneuron" "RR34"
Morphotype #RR34; see Table A3 of Wilf 2000 (reference 7696) for additional information
Polypodiopsida
  - Blechnaceae
Woodwardia gravida Hickey 1977
Morphotype #FW19-47; see Table A3 of Wilf 2000 (reference 7696) for additional information
  - Polypodiaceae
Allantodiopsis erosa Lesquereux 1878
Morphotype #RR32; see Table A3 of Wilf 2000 (reference 7696) for additional information
 Coniferales - Cupressaceae
Glyptostrobus europaeus Brongniart 1833 Chinese swamp cypress
Morphotype #FW20; see Table A3 of Wilf 2000 (reference 7696) for additional information
Angiospermae
 Fagales - Betulaceae
Corylites "FW01" Gardner 1887 birch
Morphotype #FW01; see Table A3 of Wilf 2000 (reference 7696) for additional information
 Oxalidales - Oxalidaceae
Averrhoites affinis Newberry 1868 wood sorrel
Morphotype #RR41; see Table A3 of Wilf 2000 (reference 7696) for additional information
  -
"Dicotyledonae "FW18"" = Dicotyledoneae
"Dicotyledonae "FW18"" = Dicotyledoneae
Morphotype #FW18; see Table A3 of Wilf 2000 (reference 7696) for additional information
 Laurales - Lauraceae
aff. Ocotea "FW03" Aublet 1775 laurel
Morphotype #FW03; see Table A3 of Wilf 2000 (reference 7696) for additional information
Persites argutus Hickey 1977 laurel
Morphotype #FW08,WM10; see Table A3 of Wilf 2000 (reference 7696) for additional information
 Cornales - Cornaceae
Cornus hyperborea Heer 1871 dogwood
Morphotype #FW34; see Table A3 of Wilf 2000 (reference 7696) for additional information
 Saxifragales - Cercidiphyllaceae
Cercidiphyllaceae "FW09" Engler 1907
Morphotype #FW09; see Table A3 of Wilf 2000 (reference 7696) for additional information