Xiajiaqiao Formation at Lixi, Wuning County, Jiangxi Province: Llandovery - Wenlock, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Sowerbyellidae
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? Plectodonta sp.
Kozlowski 1929
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Rhynchonellata
- Pentamerida
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Pentamerida indet.
Schuchert and Cooper 1931
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Striispirifer hsiehi
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Eospirifer sp.
Schuchert 1913
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Rhynchonellata
- Atrypida
- Atrypinidae
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Nalivkinia sp.
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Bivalvia
- Pectinida
- Leiopectinidae
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Leiopecten sp.
Khalfin 1940
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Bivalvia
- Ostreida
- Pterineidae
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Pteronitella sp.
Billings 1874
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Leptodesma sp.
Hall 1883
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Actinopteria sp.
Hall 1884
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Bivalvia
- Cyrtodontida
- Cyrtodontidae
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Cyrtodonta sp.
Billings 1858
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Bivalvia
- Modiomorphida
- Cypricardiniidae
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Cypricardinia sp.
Hall 1860
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Bivalvia
- Modiomorphida
- Modiomorphidae
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Modiolopsis sp.
Hall 1847
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Modiolopsis cf. wuningensis
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Bivalvia
- Solenida
- Orthonotidae
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Orthonota perlata
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Trilobita
- Proetida
- Proetidae
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Latiproetus latilimbatus
(Grabau 1925)
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Trilobita
- Phacopida
- Encrinuridae
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Encrinuroides sp.
Reed 1931
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Coronocephalus rex
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Geography
| Country: | China | State/province: | Jiangxi | County: | Wuning |
| Coordinates: | 29.3° North, 114.8° East (view map) | ||||
| Paleocoordinates: | 1.4° North, 124.5° East | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | local area |
Time
| Period: | Silurian |
| *Epoch: | Late/Upper Llandovery - Early/Lower Wenlock |
| Key time interval: | Llandovery - Wenlock |
| Age range of interval: | 443.80000 - 427.40000 m.y. ago |
| * legacy (obsolete) database fields | |
Stratigraphy
| Formation: | Xiajiaqiao | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. "This formation is correlated with the Xiushan Formation of SW China, and the Fentou Formation of Jiangsu and Anhui Provinces. The age, therefore, is in the Upper Llandovery-Early Wenlock range." | |||||
Lithology and environment
| Primary lithology: | green,yellow siltstone |
| Secondary lithology: | sandy "shale" |
| Lithology description: "In the Lixi section the formation is 681 m thick, and consists of yellowish-green siltstone and shandy shale rich in fossils--particularly shelly fossils..." | |
| Environment: | marine indet. |
| Geology comments: Correlation chart indicates BA3 based on shelly fauna. | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 27897 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2003-01-16 06:10:43 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2003-01-16 06:10:43 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7624. | E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner] |