Zhangjiatun Formation at Zhangjiatun, Jilin Province: Ludlow, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Paracoronocephalus jilinensis
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| species listed as "jilinesis" | ||||||||||
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Trilobita
- Phacopida
- Encrinuridae
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Encrinuroides zhangjiatunensis
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Trilobita
- Proetida
- Proetidae
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? Warburgella elongata
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Trilobita
- Odontopleurida
- Odontopleuridae
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Odontopleura sp.
Emmrich 1839
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Strophomenata
- Strophomenida
- Amphistrophiidae
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Amphistrophia sp.
Hall and Clarke 1892
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Strophomenata
- Strophomenida
- Aegiromenidae
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Aegiria grayi
(Davidson 1849)
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| recombined as Jonesea grayi | ||||||||||
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Strophomenata
- Orthotetida
- Chilidiopsidae
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? Iridistrophia zhangjiatunensis
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Striispirifer minuta
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Striispirifer orientalis
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Hedeina cf. eudora
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Eospirifer sp.
Schuchert 1913
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Rhynchonellata
- Spiriferida
- Reticulariidae
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Eoreticularia sp.
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Proreticularia cf. carens
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| synonym of Alaskospira | ||||||||||
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Rhynchonellata
- Athyridida
- Retziellidae
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Molongia jilinensis
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Anthozoa
- Auloporida
- Auloporidae
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Aulopora kouqianensis
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Scyphozoa
- Conulariida
- Conulariidae
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Conularia sp.
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| see common names | ||||||||||
Geography
| Country: | China | State/province: | Jilin |
| Coordinates: | 43.7° North, 126.3° East (view map) | ||
| Paleocoordinates: | 13.7° South, 116.4° East | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Ludlow |
| 10 m.y. bin: | Silurian 2 | ||
| Key time interval: | Ludlow | ||
| Age range of interval: | 427.40000 - 423.00000 m.y. ago |
Stratigraphy
| Formation: | Zhangjiatun | ||||
| 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. "Fossils are chiefly from the lower part of the unit...This formation is overlain by Quaternary rocks, and the base is unknown. We conclude that the formation is of Ludlow age." | |||||
Lithology and environment
| Primary lithology: | gray argillaceous mudstone |
| Secondary lithology: | tuffaceous,red or brown,yellow sandstone |
| Lithology description: "...the formation at the Beishan section, Zhangjiatun, has a total thickness of over 1461 m. It consists mainly of gray, argillacous mudstone, yellow and purple-red, tuffaceous sandstone, fine-grained sandstone, and siltstone." | |
| Environment: | marine indet. |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 27913 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2003-01-16 13:39:14 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2003-01-16 13:39:14 |
| 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] |