Baizai, Xundian: Meishucunian - Nemakit-Daldynian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Aculifera - Halkieriidae
Feng and Sun 2006
Helcionelloida - Helcionellidae
Yangtzedonta primitiva n. sp. Yu 1985
Fang et al. 2009
Feng and Sun 2006
Feng and Sun 2006
Yu 1981
Feng and Sun 2006
Feng and Sun 2006
Maikhanellidae
Feng and Sun 2006
Feng et al. 2001
Feng and Sun 2006
Feng et al. 2001
Feng and Sun 2006
Feng and Sun 2006
Mobergellidae
Feng and Sun 2006
see common names

Geography
Country:China State/province:Yunnan County:Xundian
Coordinates: 25.6° North, 103.1° East (view map)
Paleocoordinates:21.3° North, 60.9° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Cambrian Epoch: Terreneuvian
10 m.y. bin: Cambrian 1-2
Key time interval: Meishucunian - Nemakit-Daldynian Small shelly zone:  Anabarites trisulcatus - Protohertzina anabarica / Siphogonuchites triangularis - Paragloborilus subglobosus
Age range of interval: 530.7 - 525.5 m.y. ago
Stratigraphy
Formation:Zhujiaqing Member:Zhongyicun
Stratigraphic resolution:bed
Stratigraphy comments: LITHOSTRATIGRAPHIC RELATIONS: From the Zhongyicun Mbr of the Zhujiaqing Fm. AGE: Meischucunian stage in Feng et al (2001); placed here in Nemakit-Daldynian according to Steiner et al. (2007) based on correlation of Zhongyicun Mbr to lower Meischucunian= Nemakit-Daldynian. STRATIGRAPHIC POSITION: From upper phosphatic bed (Feng et al., 2001).

Li & Xiao (2004) put this as the Anabarites trisulcatus–Protohertzina anabrica; (II) Siphogonuchites triangularis–Paragloborilus subglobosus;

Lithology and environment
Primary lithology:phosphatic lithified "limestone"
Includes fossils?Y
Lithology description: LITHOLOGY: Phosphatic limestone. LITHIFICATION: Lithified on the basis of facies and sample preparation.
Environment:carbonate indet.
Geology comments: ENVIRONMENT: Not stated in text.
Taphonomy
Modes of preservation:body,replaced with calcite,replaced with phosphate
Size of fossils:macrofossils,microfossils
Preservation of anatomical detail:excellent
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,chemical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:NIGPAS
Collection method comments: COLLECTOR: Not stated in text. REPOSITORY: Nanjing Instutute of Paleontology and Geology (NIPG).
Taxonomic list comments:COVERAGE: Not an exhaustive fauna list; derived from publication with limited taxonomic scope. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Metadata
Also known as:Baizai, Xundian - [Zhongyicun Mbr, Yuhucun Fm]
Database number:49681
Authorizer:P. Wagner, W. Kiessling, A. Dunhill, A. Hendy Enterer:P. Wagner, A. Hendy, U. Merkel, B. Allen
Modifier:P. Wagner Research group:marine invertebrate
Created:2005-04-23 10:45:05 Last modified:2025-02-22 15:12:02
Access level:the public Released:2005-04-23 10:45:05
Creative Commons license:CC0
Reference information

Primary reference:
13327. W.M. Feng and W.G. Sun. 2003. Phosphate replicated and replaced microstructure of molluscan shells from the earliest Cambrian of China. Acta Palaeontologica Polonica 48(1):21-30 [P. Wagner/P. Wagner/P. Wagner]

Secondary references:

47190 Z. J. Fang, J. H. Chen, C. Z. Chen, J. G. Sha, X. Lan and S. Z. Wen. 2009. Supraspecific taxa of the Bivalvia first named, described, and published in China (1927-2007). The University of Kansas Paleontological Contributions, New Series 17:1-157 [M. Clapham/M. Clapham]
35588 W. Feng and W. Sun. 2006. Monoplacophoran Igorella-type pore-channel structures from the Lower Cambrian in China. Materials Science and Engineering C 26:699-702 [W. Kiessling/U. Merkel]
15905 W. M. Feng, W. G. Sun, and Y. Qian. 2000. Earliest Cambrian monoplacophora in northeastern Yunnan with some new genera and species. Acta Micropalaeontologica Sinica 17:365-377 [P. Wagner/P. Wagner/A. Hendy]
15906 W. M. Feng, W. G. Sun, and Y. Qian. 2001. Skeletalization characters, classification and evolutionary significance of Early Cambrian Monoplacophoran maikhanellids. Acta Palaeontologica Sinica 40:195-213 [P. Wagner/P. Wagner/P. Wagner]
16501 W. Yu. 1981. New earliest Cambrian monoplacophorans and gastropods from W. Hubei and E. Yunnan. Acta Palaeontologica Sinica 20(6):552-556 [P. Wagner/P. Wagner/U. Merkel]