Aphanomena-Hirnantia Comm., Kuanyinchiao Bed at Guanyinqiao, (Locality 200 AAE): Hirnantian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Athyridida
- Meristellidae
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Hindella sp.
Davidson 1882
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17 specimens | ||||||
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Rhynchonellata
- Orthida
- Draboviidae
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Hirnantia sp.
Lamont 1935
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45 specimens | ||||||
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Rhynchonellata
- Orthida
- Dalmanellidae
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? Dalmanella sp.
Hall and Clarke 1892
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9 specimens | ||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Plectothyrella sp.
Temple 1965
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3 specimens | ||||||
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Strophomenata
- Strophomenida
- Glyptomenidae
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Paromalomena sp.
Rong 1984
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3 specimens | ||||||
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Strophomenata
- Strophomenida
- Leptostrophiidae
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Aphanomena sp.
Bergstrom 1968
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52 specimens | ||||||
| synonym of Eostropheodonta | |||||||
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Strophomenata
- Orthotetida
- Triplesiidae
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Cliftonia sp.
Foerste 1909
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11 specimens | ||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Sichuan |
| Coordinates: | 28.0° North, 108.0° East (view map) | ||
| Paleocoordinates: | 9.3° North, 127.2° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Hirnantian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Hirnantian | ||
| Age range of interval: | 445.20000 - 443.80000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Kuanyinchiao Bed
Bed is about 50 cm thick. Community spans Diceratograptus mirus, Paraorthograptus uniformis, and Diplograptus bohemicus Zones. Authors do not give sufficient information to tie this bed to a particular one of these zones. This collection is distinct from that with the same name but an added "*". | |||||
Lithology and environment
| Primary lithology: | black calcareous mudstone |
| Includes fossils? | Y |
| Lithology description: "bed massive...brachiopods occur as thoroughly disarticulated, well-preserved shells scattered within calcareous mudstone matrix...specimens commonly convex up, suggesting current activity...The rock is very fine grained, black, calcareous mudstone..." | |
| Environment: | marine indet. |
| Geology comments: "moderate depth, possibly BA 3, because it occurs landward of both the Pelagic Community (dominated in this region by graptolites) and the more offshore "Paracraniops"-Paramalomena Community, and is itself interpreted to be seaward of the very low diversity Paramalomena-Aegiromena Comm....moderately turbulent, well-oxygenated...absence of corals, stromatoporoids, trilobites and bryozoans...very calcareous nature of rock suggests not cold water...BA 3 or 4." | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: I have combined two collections from same locality. Abundances are given in table 2. | |
Metadata
| Database number: | 64812 | ||
| Authorizer: | L. Ivany | Enterer: | L. Ivany | Research group: | marine invertebrate |
| Created: | 2006-09-15 18:22:41 | Last modified: | 2006-09-15 21:22:41 |
| Access level: | the public | Released: | 2006-09-15 18:22:40 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7183. | Y. Wang, A. J. Boucot, J.Y. Rong and X.C. Yang. 1987. Community paleoecology as a geologic tool: the Chinese Ashgillian-Eifelian (latest Ordovician through early Middle Devonian) as an example. Geological Society of America Special Paper 211:1-100 [M. Foote/M. Foote/M. Foote] |