3.5 miles south of High Bridge: Chatfieldian, Kentucky
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Paracrinoidea
- Comarocystitida
- Comarocystitidae
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Comarocystites tribrachius n. sp.
Parsley and Mintz 1975
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see common names |
Geography
Country: | United States | State/province: | Kentucky | County: | Jessamine |
Coordinates: | 37.8° North, 84.6° West (view map) | ||||
Paleocoordinates: | 27.5° South, 63.3° West | ||||
Basis of coordinate: | estimated from map | ||||
Geographic resolution: | basin |
Time
Period: | Ordovician | Epoch: | Late/Upper Ordovician |
10 m.y. bin: | Ordovician 4-5 | ||
Key time interval: | Chatfieldian | ||
Age range of interval: | 453.70000 - 451.10000 m.y. ago |
Stratigraphy
Formation: | Lexington Limestone | Member: | Curdsville Limestone |
Stratigraphic resolution: | member |
Lithology and environment
Primary lithology: | "cross stratification",phosphatic,shelly/skeletal lithified sandy,cherty/siliceous grainstone | ||
Secondary lithology: | phosphatic,shelly/skeletal lithified sandy,cherty/siliceous packstone | ||
Includes fossils? | Y | ||
Includes fossils? | Y | ||
Environment: | deep subtidal ramp | Tectonic setting: | cratonic basin |
Geology comments: environmental call based on field notes of Holland and Patzkowsky |
Taphonomy
Modes of preservation: | body,original calcite,replaced with silica,replaced with phosphate |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | biostratigraphic analysis |
Museum repositories: | USNM |
Metadata
Database number: | 197153 | ||
Authorizer: | P. Wagner | Enterer: | P. Wagner | Research group: | marine invertebrate |
Created: | 2018-10-24 00:06:02 | Last modified: | 2018-10-24 00:06:02 |
Access level: | the public | Released: | 2018-10-24 00:06:02 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
67187. | R. L. Parsley and L. W. Mintz. 1975. North American Paracrinoidea: (Ordovician: Paracrinozoa, new: Echinodermata). Bulletins of American Paleontology 68:1-115 [P. Wagner/P. Wagner] |