Joseph R Thomasson Site 9a: Hemphillian, Kansas
collected by M. K. Darnell, J. R. Thomasson 2001
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Nassella pohlii seed repro
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| "grass anthoecia" | ||||||||||
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Nassella reynoldsii seed repro
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| "grass anthoecia" | ||||||||||
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Cryptantha auriculata seed/fruit
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| "borage nutlets" | ||||||||||
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Prolappula verrucosa seed/fruit
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| "borage nutlets" | ||||||||||
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Mammalia
- Perissodactyla
- Equidae
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Neohipparion eurystyle
(Cope 1893)
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| 2001 collection | ||||||||||
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Mammalia
- Perissodactyla
- Rhinocerotidae
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Teleoceras sp.
Hatcher 1894
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| early 1970s collection | ||||||||||
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Angiospermae
- Rosales
- Ulmaceae
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Celtis willistonii seed/fruit
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| "endocarps" | ||||||||||
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Angiospermae
- Boraginales
- Boraginaceae
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Biorbia fossilia seed/fruit
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| "borage nutlets" | ||||||||||
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Prolithospermum johnstonii seed/fruit
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| "borage nutlets" | ||||||||||
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Angiospermae
- Poales
- Poaceae
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Panicum elegans seed repro
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| "grass anthoecia" | ||||||||||
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Berriochloa amphoralis seed repro
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| "grass anthoecia" | ||||||||||
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Berriochloa maxima seed repro
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| "grass anthoecia" | ||||||||||
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Berriochloa minuta seed repro
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| "grass anthoecia" | ||||||||||
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Berriochloa pumila seed repro
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| "grass anthoecia" | ||||||||||
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Berriochloa tuberculata seed repro
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| "grass anthoecia" | ||||||||||
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Berriochloa variegata seed repro
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| "grass anthoecia" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Kansas | County: | Ellis |
| Coordinates: | 39.0° North, 99.5° West (view map) | ||||
| Paleocoordinates: | 39.3° North, 97.8° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene |
| 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Hemphillian |
| Age range of interval: | 9.40000 - 4.70000 m.y. ago |
Stratigraphy
| Formation: | Ogallala | ||||
| Stratigraphy comments: stratotype locality of the Prolithospermum johnstonii-Nassella pohlii zone |
Lithology and environment
| Primary lithology: | diatomaceous marl |
| Lithology description: "diatomaceous marl" | |
| Environment: | pond |
| Geology comments: "a lacustrine element, such as a pond" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | none |
| Associated major elements: | none |
| Disassociated major elements: | none |
| Disassociated minor elements: | some |
Collection methods and comments
| Collection methods: | surface (in situ),field collection | ||
| Reason for describing collection: | biostratigraphic analysis | ||
| Collectors: | M. K. Darnell, J. R. Thomasson | Collection dates: | 2001 |
| Collection method comments: specimens are in the Fort Hays State Museum collection | |||
| Taxonomic list comments:plant list repeated from Thomasson 1979; gar scales are also present lower in the local section | |||
Metadata
| Also known as: | JRT Site 9a | ||
| Database number: | 79633 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy | Research group: | vertebrate |
| Created: | 2008-03-16 16:10:53 | Last modified: | 2008-03-16 18:10:53 |
| Access level: | the public | Released: | 2008-03-16 16:10:53 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 26753. | M. K. Darnell and J. R. Thomasson. 2007. First equid remains from the late Miocene Prolithospermum johnstonii-Nassella pohlii assemblage zone stratotype locality, Ellis County, Kansas. Transactions of the Kansas Academy of Science 110(1-2):10-15 [J. Alroy/J. Alroy] |