USNM 41254: Clarkforkian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Polypodiopsida
- Polypodiaceae
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Allantodiopsis erosa leaf
(Lesquereux 1878)
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| Morphotype #RR32; see Table A3 of Wilf 2000 (reference 7696) for additional information | ||||||||||
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Polypodiopsida
- Blechnaceae
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Woodwardia gravida leaf, non-seed repro
Hickey 1977
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| Morphotype #FW19-47; see Table A3 of Wilf 2000 (reference 7696) for additional information | ||||||||||
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Coniferales
- Cupressaceae
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Glyptostrobus europaeus leaf, seed repro
(Brongniart 1833)
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| Morphotype #FW20; see Table A3 of Wilf 2000 (reference 7696) for additional information | ||||||||||
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Angiospermae
- Cornales
- Cornaceae
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Cornus hyperborea leaf
Heer 1871
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| Morphotype #FW34; see Table A3 of Wilf 2000 (reference 7696) for additional information | ||||||||||
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Angiospermae
- Laurales
- Lauraceae
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| Morphotype #FW08,WM10; see Table A3 of Wilf 2000 (reference 7696) for additional information | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Sweetwater |
| Coordinates: | 41.6° North, 109.3° West (view map) | ||||
| Paleocoordinates: | 50.2° North, 80.4° West (Wright 2013) | ||||
| Basis of coordinate: | unpublished field data | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | ||
| 10 m.y. bin: | Cenozoic 1-2 | ||
| *Period: | Tertiary | *Epoch: | Late/Upper Paleocene | *Local age/stage: | Clarkforkian |
| Key time interval: | Clarkforkian | ||
| Age range of interval: | 56.2 - 54.9 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Fort Union |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | lithified carbonaceous "shale" | ||
| Includes fossils? | Y | ||
| Environment: | wet floodplain | Tectonic setting: | intermontane basin |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | USNM |
| Collection method comments: Green River Basin; badlands along Little Bitter Creek; NMNH Accession #OR420051 | |
Metadata
| Also known as: | PW 9536 | ||
| Database number: | 28647 | ||
| Authorizer: | P. Wilf | Enterer: | P. Wilf |
| Modifier: | P. Wilf | Research group: | paleobotany |
| Created: | 2003-02-20 17:29:11 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2003-02-20 17:29:11 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 7696. | 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] |