Yangweizhou-Jimachong, Blackwelderia zone: Guzhangian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Olenida - Pterocephaliidae
Trilobita - Corynexochida - Corynexochidae
Trilobita - Corynexochida - Kaolishaniidae
Trilobita - Corynexochida - Leiostegiidae
Trilobita - Mapaniidae
Trilobita - Trinucleida - Alsataspididae
Trilobita - Ptychopariida - Plethopeltidae
Trilobita - Ptychopariida - Ptychopariidae
Trilobita - Ptychopariida - Lonchocephalidae
Trilobita - Ptychopariida - Tricrepicephalidae
Trilobita - Asaphida - Anomocaridae
Trilobita - Asaphida - Rhyssometopidae
Trilobita - Lichida - Damesellidae
Yuan and Yin 2001
Protaitzehoia quadrata (Resser and Endo 1937)
Yuan and Yin 2001
n. subsp. jimachongensis
Yuan and Yin 2001
see common names

Geography
Country:China State/province:Guizhou County:Wanshan
Coordinates: 27.5° North, 109.2° East (view map)
Paleocoordinates:12.4° South, 85.0° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cambrian Epoch: Miaolingian
Stage: Guzhangian 10 m.y. bin: Cambrian 4
Key time interval: Guzhangian Trilobite zone:  Formosagnostus formosus-Blackwelderia
Age range of interval: 500.5 - 497 m.y. ago
Stratigraphy
Formation:Chefu
Stratigraphic resolution:group of beds
Stratigraphy comments: beds 14-20, lower Chefu Formation, Youshuian = Guzhangian
Lithology and environment
Primary lithology: lithified "limestone"
Lithology description: grey to dark grey, thin-bedded argillaceous limestone, laminated limestone intercalated with grey to pale-grey, thick-bedded rudaceous limestone
Environment:slope
Taphonomy
Modes of preservation:cast,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:125072
Authorizer:W. Kiessling Enterer:U. Merkel
Modifier:U. Merkel Research group:marine invertebrate
Created:2012-03-02 20:03:24 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2013-03-02 20:03:24
Creative Commons license:CC0
Reference information

Primary reference:
40544. J. L. Yuan and G. Z. Yin. 1998. New polymerid trilobites from the Chefu Formation in early Late Cambrian of eastern Guizhou. Acta Palaeontologica Sinica 37(2):137-172 [W. Kiessling/U. Merkel]

Secondary references:

40546 J. L. Yuan and G. Z. Yin. 2001. On taxonomic position of Late Cambrian Protaitzehoia Yang (Trilobita). Acta Palaeontologica Sinica 40(3):343-350 [W. Kiessling/U. Merkel]