Bed 17, Xiaotan Section: Meishucunian - Tommotian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Coeloscleritophora - Chancelloriida - Chancelloriidae
Allonnia erromenosa
Tommotiida - Tannuolinidae
Tannuolina zhangwentangi Qian and Bengtson 1989
unclassified
Micrina xiaofanensis n. sp. Li and Xiao 2004
see common names

Geography
Country:China State/province:Yunnan County:Yongshan
Coordinates: 27.9° North, 103.6° East (view map)
Paleocoordinates:34.4° North, 164.6° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Cambrian Epoch:Terreneuvian
Key time interval:Meishucunian - Tommotian Small shelly zone: Sinosachites flabelliformis–Tannuolina zhangwentangi
Age range of interval:530.70000 - 521.00000 m.y. ago
Stratigraphy
Formation:Yu'anshan
Local section:Xiaotan Local bed:17
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: See Figure 1. This is the top of the Meishucunian
Lithology and environment
Primary lithology: siltstone
Secondary lithology: dolomite
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Lithology not stated in text, but stated to be cherty. LITHIFICATION: Assumed lithified as replaced by phosphate. Li & Xiao describe this as phosphatic dolomite
Environment:marine indet.
Geology comments: ENVIRONMENT: Not stated in text.
Taphonomy
Modes of preservation:body,replaced with phosphate
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:bulk,chemical,field collection,survey of museum collection
Reason for describing collection:taxonomic analysis
Collection method comments: COLLECTOR: Not stated in text, but presumably Steiner et al; unknown date. REPOSITORY: TU Berlin.
Taxonomic list comments:COVERAGE: Limited to characteristic taxa figured in publication. NOMENCLATURE: Not an authoritative publication but with modern nomenclature and with species resolution identifications.

Li & Xiao's full list added later.
Metadata
Database number:96302
Authorizer:P. Wagner Enterer:P. Wagner
Research group:marine invertebrate
Created:2010-05-31 14:31:08 Last modified:2010-05-31 17:31:08
Access level:the public Released:2010-05-31 14:31:08
Creative Commons license:CC BY
Reference information

Primary reference:
32683. G. Li and S. Xiao. 2004. Tannuolina and Micrina (Tannuolinidae) from the Lower Cambrian of eastern Yunnan, south China, and their scleritome reconstruction. Journal of Paleontology 78(5):900-913 [P. Wagner/P. Wagner]