Xuanjiangping section [Guojiaba Fm]: Atdabanian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Orthothecida
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Actinotheca sp.
Duan 1984
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Tommotiida
- Tannuolinidae
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Tannuolina zhangwentangi
Qian and Bengtson 1989
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Helcionelloida
- Pelagiellida
- Pelagiellidae
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Pelagiella sp.
Matthew 1895
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unclassified
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Deiradoclavus trigonus n. gen., n. sp.
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Geography
| Country: | China | State/province: | Shaanxi |
| Coordinates: | 36.9° North, 109.3° East (view map) | ||
| Paleocoordinates: | 3.6° South, 144.4° East | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Series 2 |
| Stage: | Stage 3 | 10 m.y. bin: | Cambrian 2 | *Epoch: | Early/Lower Caerfai |
| *International age/stage: | Late/Upper Nemakit-Daldynian - Tommotian | *Local age/stage: | Late/Upper Meishucun Stage - Qiongzhusi Stage |
| Key time interval: | Atdabanian | ||
| Age range of interval: | 521 - 515.6 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Guojiaba | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: AGE: Atdabanian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data. | |||||
Lithology and environment
| Primary lithology: | concretionary,intraclastic lithified "limestone" |
| Lithology description: specimens are from a calcareous horizon (thin limestone overlying beds with calcareous concretions) | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | trace |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: The specimens were collected during a Royal Society-Academia Sinica Exchange Scheme in 1986. | |
| Taxonomic list comments:The taxonomic list does not include unidentified bradoriids, unidentified tubes, and other problematica which were not listed as actually being collected, only observed. | |
Metadata
| Database number: | 8091 | ||
| Authorizer: | M. Patzkowsky | Enterer: | P. Borkow |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2000-06-19 09:41:23 | Last modified: | 2009-06-12 02:34:23 |
| Access level: | the public | Released: | 2000-06-19 09:41:23 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 506. | S. Conway Morris and M. Chen. 1991. Cambroclaves and paracarinachitids, early skeletal problematica from the Lower Cambrian of South China. Palaeontology 34(2):357-397 [M. Patzkowsky/P. Borkow/P. Wagner] |