Unit 20, Tongzhi Fm., Honghuayuan and Tongzhi, Guizhou Prov., China: Tremadoc, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata
- Orthida
- Hesperonomiidae
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Hesperonomia sp.
Ulrich and Cooper 1936
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Rhynchonellata
- Orthida
- Eoorthidae
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Apheoorthis sp.
Ulrich and Cooper 1936
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[entered as Apheorthis sp.] | ||||||||||
Trilobita
- Asaphida
- Taihungshaniidae
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Tungtzuella sp.
Lu 1957
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Trilobita
- Asaphida
- Asaphidae
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Psilocephalina sp.
Hsu 1948
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see common names |
Geography
Country: | China | State/province: | Guizhou |
Coordinates: | 28.0° North, 107.0° East (view map) | ||
Paleocoordinates: | 21.4° North, 143.4° East | ||
Geographic resolution: | local area |
Time
Period: | Ordovician | Epoch: | Early/Lower Ordovician |
Stage: | Tremadocian | 10 m.y. bin: | Ordovician 1 |
*Period: | Early/Lower Ordovician | *Epoch: | Late/Upper Tremadoc |
*International age/stage: | Late/Upper Tremadoc | ||
Key time interval: | Tremadoc | ||
Age range of interval: | 485.40000 - 477.70000 m.y. ago | ||
* legacy (obsolete) database fields |
Lithology and environment
Primary lithology: | ooidal lithified grainstone |
Secondary lithology: | "shale" |
Lithology description: oolitic limestone and muddy shale | |
Environment: | sand shoal |
Taphonomy
Collection methods and comments
Collection excludes: | species names |
Metadata
Database number: | 5275 | ||
Authorizer: | A. Miller | Enterer: | P. Novack-Gottshall | Research group: | marine invertebrate |
Created: | 1999-09-12 17:38:53 | Last modified: | 1999-09-12 20:38:53 |
Access level: | the public | Released: | 2000-11-20 13:53:25 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
288. | R. Wang. 1981. Stratigraphic Summary of the Southwestern Region of China. Institute of Geology and Mine Deposit at Chengdu, Ministry of Geology (not published, copy of article deposited with A. I. Miller at the University of Cincinnati, received through S. Mao) 14-61 [A. Miller/P. Novack-Gottshall] |