Yuanbaoshan Formation at Ejin Qi, Neimonggol: Llandovery, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Pterobranchia
- Graptoloidea
- Climacograptidae
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Climacograptus rectangulatus
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Pterobranchia
- Graptoloidea
- Monograptidae
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Spirograptus turriculatus
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Streptograptus crispus
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Streptograptus runcinatus
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Monoclimacis griestoniensis
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Monoclimacis linnarssoni
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Monograptus priodon
(Bronn 1835)
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Pterobranchia
- Graptoloidea
- Retiolitidae
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Retiolites geinitzianus
Barrande 1850
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Petalolithus elongatus
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| see common names | |||||||
Geography
| Country: | China | State/province: | Nei Mongol |
| Coordinates: | 40.5° North, 100.1° East (view map) | ||
| Paleocoordinates: | 30.3° South, 108.3° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Llandovery |
| 10 m.y. bin: | Silurian 1 | *Epoch: | Late/Upper Llandovery |
| Key time interval: | Llandovery | ||
| Age range of interval: | 443.80000 - 433.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Yuanbaoshan | ||||
| 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. "...graptolites...indicating an Upper Llandovey age" | |||||
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Lithology description: "The unit consists of volcanic and clastic rocks with a thickness of 1600 m" | |
| Environment: | marine indet. |
| Geology comments: Correlation chart shows ba5 based on graptolites. | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 27911 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2003-01-16 12:41:56 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2003-01-16 12:41:56 |
| 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] |