Niuchang tracksite: Middle Triassic, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Chirotheriidae
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Chirotherium barthii
Kaup 1835
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| A (NC1–21), 20 pes and 18 manus imprints; B, 17 pes imprints; C, 5 pes imprints | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Guizhou | County: | Zhenfeng |
| Coordinates: | 25.6° North, 105.7° East (view map) | ||||
| Paleocoordinates: | 14.6° North, 94.7° East | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Middle Triassic |
| 10 m.y. bin: | Triassic 2 | ||
| Key time interval: | Middle Triassic | ||
| Age range of interval: | 247.20000 - 237.00000 m.y. ago |
Stratigraphy
| Formation: | Guanling | Member: | Songzikan | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "The Songzikan Member (Fig. 1B) is composed of dolostone and variegated claystone. A coarse-grained green pisolite that is rich in volcanic ash (Zhu, 1994) at its base is widely distributed in southwestern China and a pronounced marker for the basal Guanling Formation (Zhu, 1994; Wan, 2002; Xiao and Hu, 2005). 40Ar/39Ar dating of ash in the green pisolite in the Zunyi region, Guizhou Province is 238–239 Ma (Hu et al., 1996). After recent radio-isotopic data by Mundil et al. (2010) this corresponds to the Ladinian. However biostratigraphic data point to an Anisian age. The Songzikan Member yields abundant conodont and bivalve faunas that suggest an early Anisian age throughout southern China (Wang et al., 2005, 2009; Zhang et al., 2009)." (Xing et al. 2013) | |||||
Lithology and environment
| Primary lithology: | argillaceous dolomite |
| Secondary lithology: | claystone |
| Environment: | marginal marine indet. |
Taphonomy
| Modes of preservation: | trace |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | observed (not collected) |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | L-00612 | ||
| Database number: | 196817 | ||
| Authorizer: | A. Dunhill | Enterer: | B. Allen |
| Modifier: | B. Allen | ||
| Created: | 2018-10-09 09:59:45 | Last modified: | 2018-10-09 10:10:18 |
| Access level: | the public | Released: | 2018-10-09 09:59:45 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 67035. | L. Xing, H. Klein, M. G. Lockley, J. Li, J. Zhang, M. Matsukawa, and J. Xiao. 2013. Chirotherium Trackways from the Middle Triassic of Guizhou, China. Ichnos 20(2):99-107 [A. Dunhill/B. Allen] |