00-FN-23.5: Chatfieldian, Kentucky
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Asaphida
- Asaphidae
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Isotelus sp.
Dekay 1824
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1 individual | |||||||||
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Cephalopoda
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Nautiloidea indet.
Agassiz 1847
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1 individual | |||||||||
| orthoconic nautiloid | ||||||||||
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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1 individual | |||||||||
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Stenolaemata
- Trepostomata
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Trepostomata indet.
Ulrich 1882
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8 individuals | |||||||||
| ramose trepostome | ||||||||||
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira modesta
(Hall 1847)
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3 individuals | |||||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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Dalmanella sp.
Hall and Clarke 1892
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41 individuals | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Kentucky | County: | Franklin |
| Coordinates: | 38.2° North, 84.9° West (view map) | ||||
| Paleocoordinates: | 27.0° South, 63.2° West | ||||
| Basis of coordinate: | unpublished field data | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | *Local age/stage: | Chatfieldian |
| Key time interval: | Chatfieldian | ||
| Age range of interval: | 453.70000 - 451.10000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Lexington Limestone | Member: | Grier Limestone |
| Local section: | Frankfort North | Local bed: | 23.5 m |
| Local order: | bottom to top | ||
| Regional section: | Frankfort, KY | ||
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | bioturbation,phosphatic,shelly/skeletal,gray lithified packstone | ||
| Secondary lithology: | gray lithified silty mudstone | ||
| Includes fossils? | Y | ||
| Environment: | deep subtidal ramp | Tectonic setting: | cratonic basin |
Taphonomy
| Modes of preservation: | body,mold/impression,original calcite,replaced with calcite |
| Temporal resolution: | time-averaged |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | all microfossils |
| Collection methods: | observed (not collected) |
| Collection size: | 55 individuals |
| Rock censused: | 1800 cm2 (area) |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 48742 | ||
| Authorizer: | S. Holland | Enterer: | S. Holland | Research group: | marine invertebrate |
| Created: | 2005-03-30 10:55:41 | Last modified: | 2005-03-30 13:55:41 |
| Access level: | the public | Released: | 2005-03-30 10:55:41 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 9838. | S. M. Holland and M. E. Patzkowsky. 2004. Ecosystem structure and stability: middle Upper Ordovician of central Kentucky, USA. Palaios 19(4):316-331 [S. Holland/S. Holland/S. Bruning] |