AFI 77a: Darriwilian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Rhynchonellata
- Orthida
- Productorthidae
|
|||||||
|
Saucrorthis obscura
|
4 individuals | ||||||
|
Rhynchonellata
- Orthida
- Glyptorthidae
|
|||||||
|
Parisorthis dischidanteris
Zhan and Jin 2005
|
7 individuals | ||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Sichuan |
| Coordinates: | 28.3° North, 103.8° East (view map) | ||
| Paleocoordinates: | 17.9° North, 136.4° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| Stage: | Darriwilian | 10 m.y. bin: | Ordovician 3 |
| Key time interval: | Darriwilian | ||
| Age range of interval: | 467.30000 - 458.40000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | brown,yellow calcareous mudstone |
| Includes fossils? | Y |
| Lithology description: Greyish yellow mudstone at base (deeply ewathered, no fossils), changing upward to yellowish brown, calcareous mudstone and interbedded mudstone | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: NIGPP | |
Metadata
| Database number: | 64234 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | J. Alroy | Research group: | marine invertebrate |
| Created: | 2006-09-04 13:44:36 | Last modified: | 2012-08-20 22:12:20 |
| Access level: | the public | Released: | 2006-09-04 13:44:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18539. | R.-B. Zhan and J. Jin. 2005. Brachiopods from the Dashaba Formation (Middle Ordovician) of Sichuan Province, south-west China. Special Papers in Palaeontology 74:1-63 [P. Wagner/P. Wagner] |