Hongchunping Formation, Maidipig Member, Sichuan, China - Conway Morris 1992: Manykaian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Punctatus emeiensis
He 1980
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Archaeotremaria polytremata
Yü 1979
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Moore and Lieberman 2009 | ||||||
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Scyphozoa
- Conularina
- Hexangulaconulariidae
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Arthrochites emeishanensis
Chen 1982
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Scyphozoa
- Conularina
- Carinachitidae
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Carinachites curvatornatus
(Chen 1982)
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Carinachites tetrasulcatus
(Jiang 1982)
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| see common names | |||||||
Geography
| Country: | China | State/province: | Sichuan |
| Coordinates: | 29.6° North, 103.5° East (view map) | ||
| Paleocoordinates: | 33.9° North, 166.0° East | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cambrian | Epoch: | Terreneuvian |
| Stage: | Fortunian | 10 m.y. bin: | Cambrian 1 |
| *Period: | Early/Lower Cambrian | *Epoch: | Early/Lower Caerfai |
| *International age/stage: | Nemakit-Daldynian | *Local age/stage: | Meishucun |
| Key time interval: | Manykaian | Zone: | Anabarites-Circotheca |
| Age range of interval: | 538.80000 - 529.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Hongchunping | Member: | Maidiping | ||
| Local section: | Niuniuzhai | Local bed: | Bed no. 34 | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The placement of Anabarites is interpretted to be of earliest Cambrian as described by Dr. Martin J. Head PhD Geol, University of Cambridge. URL: www.geology.utoronto.ca/~ers121s/index.html The placement of Circotheca zone is interpretted by the IUGS to be a fauna of the global stratotype for the Precambrian and Cambrian boundary. URL:www.k12nf.ca/lakeacademy/fossil2.html | |||||
Lithology and environment
| Primary lithology: | phosphatic lithified "limestone" |
| Lithology description: phosphatic limestone | |
Taphonomy
| Modes of preservation: | original phosphate |
Collection methods and comments
| Collection methods: | chemical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: C. tetrasulcatus - phosphatic preservation as fine grained granular mass, diagenic alteration of an originally phosphatic skeleton, also signs of attack by predators/parasites. C. curvatornatus - often incomplete, lack some faces, external detail obscured by phosphatic overgrowth. Also occasional steinkerns. | |
Metadata
| Database number: | 7818 | ||
| Authorizer: | M. Patzkowsky, W. Kiessling | Enterer: | P. Borkow, M. Krause | Research group: | marine invertebrate |
| Created: | 2000-06-03 20:33:19 | Last modified: | 2004-03-08 14:36:25 |
| Access level: | the public | Released: | 2001-03-26 12:03:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 498. | S. Conway Morris and C. Menge. 1992. Carinachitiids, Hexangulaconnulariids and punctatus: problematic metazoans from the Early Cambrian of South China. Journal of Paleontology 66(3):384-406 [M. Patzkowsky/P. Borkow/J. Alroy] |
Secondary references:
| 51722 | R. A. Moore and B. S. Lieberman. 2009. Preservation of early and Middle Cambrian soft-bodied arthropods from the Pioche Shale, Nevada, USA. Palaeogeography, Palaeoclimatology, Palaeoecology 277:57-62 [W. Kiessling/M. Krause] |