Republic, locality B2737 Knob Hill: Ypresian, Washington
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Angiospermae
- Sapindales
- Sapindaceae
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Acer washingtonense
Wolfe and Tanai 1987
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Washington | County: | Ferry County |
| Coordinates: | 48.7° North, 118.7° West (view map) | ||||
| Paleocoordinates: | 54.4° North, 101.9° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Ypresian | 10 m.y. bin: | Cenozoic 2 |
| Key time interval: | Ypresian | ||
| Age range of interval: | 56 - 47.8 m.y. ago | ||
| Age estimate: | 49.43 ± 0.54 Ma (Ar/Ar) |
Stratigraphy
| Formation: | Klondike Mountain | Member: | Tom Thumb |
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | planar lamination,brown lithified mudstone | ||
| Environment: | lacustrine - large | Tectonic setting: | rift |
| Geology comments: Basin developed in Republic graben | |||
Taphonomy
| Modes of preservation: | body,adpression |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Material housed in the Burke Museum of Natural History and Culture, Seattle (UWBM), partly belonging to the Stonerose Interpretive Center, Republic, Washington (SR). | |
Metadata
| Also known as: | Knob Hill exposure | ||
| Database number: | 227992 | ||
| Authorizer: | K. Volkman | Enterer: | K. Volkman |
| Modifier: | K. Volkman | Research group: | paleobotany |
| Created: | 2022-11-14 23:03:48 | Last modified: | 2023-01-09 10:39:20 |
| Access level: | the public | Released: | 2022-11-14 23:03:48 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 80176. | J. A. Wolfe and T. Tanai. 1987. Systematics, phylogeny, and distribution of Acer (maples) in the Cenozoic of western North America. Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and Mineralogy 22(1):1-246 [B. Allen/B. Allen] |
Secondary references:
| 83102 | M. DeVore, W. Taylor, and K. Pigg. 2015. Nuphar carlquistii sp. nov. (Nymphaeaceae): A Water Lily from the Latest Early Eocene, Republic, Washington. International Journal of Plant Sciences 176(4):365-377 [K. Volkman/K. Volkman] |