NJ663, Yijianfang section, Bachu area: Llanvirn, China
collected 1987
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Trilobita
- Phacopida
- Pliomeridae
|
|||||||
|
Ovalocephalus kanlingensis
(Zhang 1981)
|
1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Xinjiang | County: | Bachu County |
| Coordinates: | 40.2° North, 78.9° East (view map) | ||||
| Paleocoordinates: | 31.1° South, 117.8° East | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Middle Ordovician |
| 10 m.y. bin: | Ordovician 2-3 | ||
| Key time interval: | Llanvirn | ||
| Age range of interval: | 468.40000 - 458.40000 m.y. ago |
Stratigraphy
| Formation: | Tumuxiuke | ||||
| Local section: | Yijianfang | Local bed: | 35 | ||
| Local order: | bottom to top | ||||
| Stratigraphy comments: middle of bed 35 | |||||
Lithology and environment
| Primary lithology: | glauconitic,shelly/skeletal,gray lithified sandy grainstone |
| Lithology description: Collection from 14.4 m section of dark-grey thick-bedded arenaceous biocalcarenties with glauconites | |
| Environment: | offshore shelf |
| Geology comments: shallow outer-shelf slope environment with depth slightly more than 70 m, just below storm wave base | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),mechanical,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | NIGPAS | Collection dates: | 1987 |
| Collection method comments: Collection made as part of an extensive field investigation of the periphery of the Tarim Basin by geologists of the Nanjing Institute of Geology and Palaeontology, Academia Sinica, and the 05 Project Administration, Bureau of Petroleum Geology of Southwest China. | |
Metadata
| Database number: | 188381 | ||
| Authorizer: | M. Hopkins | Enterer: | M. Hopkins |
| Modifier: | M. Hopkins | Research group: | marine invertebrate |
| Created: | 2017-08-30 11:05:31 | Last modified: | 2017-08-30 11:51:16 |
| Access level: | the public | Released: | 2017-08-30 11:05:31 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 62426. | Z. Zhou, G. Yin, and Z. Zhou. 2014. Ordovician (Darriwilian-early Katian) trilobite faunas of northwestern Tarim, Xinjiang, China. Memoirs of the Association of Australasian Palaeontologists 46:1-142 [M. Hopkins/M. Hopkins] |