Upper Wengxiang Fm., Upper Part, at Wengxiang near Kaili, SE Guizhou Province (Silurian of China)

Where: Guizhou, China (26.5° N, 108.0° E)

• Paleocoordinates: 4.2° N, 71.3° E (Wright 2013)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Upper Wengxiang Formation, Sheinwoodian (433.4 - 430.5 Ma)

• Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. "Based on these fossils, an early Wenlock age is assigned to the [Up. W. Fm.], and it is correlated with the Xiushan Formation." Position on correlation chart suggests zonation consistent with Sheinwoodian age.

• member-level stratigraphic resolution

Environment/lithology: marine; gray, green, yellow shale and marl

• Correlation chart indicates shelly-based BA2-3 position.
• "The upper part consists of yellowish-green, gray-green, and dark-gray shale, siltstone, and interbedded calcareous mudstone and marl rich in fossils (especially in the upper part)...The upper part has a thickness of 376 m."

Primary reference: E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27792: authorized by Michael Foote, entered by Michael Foote on 09.01.2003

Creative Commons license: CC0 (CC0)

Taxonomic list

unclassified
  -
Pterobranchia
 Graptoloidea - Monograptidae
 Graptoloidea - Retiolitidae
Stomatograptus sp. Tüllberg 1883 graptolite
Trilobita
 Phacopida - Encrinuridae
Coronocephalus sp. Grabau 1924 trilobite
Rhynchonellata
 Atrypida - Atrypinidae
 Atrypida - Atrypidae
Atrypa sp. Dalman 1828
 Athyridida - Nucleospiridae
 Spiriferida - Cyrtiidae
Eospirifer radiatus Sowerby 1834
 Spiriferida - Delthyrididae
Strophomenata
 Strophomenida - Leptostrophiidae
"Leptostrophia" sp. Hall and Clarke 1892
Mesoleptostrophia sp. Harper and Boucot 1978
Cephalopoda
 Orthocerida - Sichuanoceratidae
Sichuanoceras sp. Chang 1962
 Actinocerida -
Parahelenites sp. Chen and Liu 1974
 Actinocerida - Armenoceratidae
Kailiceras sp., "Helenites sp." = Armenoceras
Kailiceras sp. Chen and Liu 1974
"Helenites sp." = Armenoceras Foerste 1924
 Actinocerida - Parahelenitidae
Eushantungoceras sp. Shimizu and Obata 1935
Gastropoda
 Euomphalina - Elasmonematidae
Discordichilus sp. Cossmann 1918 snail
corrected from "Discodichilus"
Bivalvia
 Solenida - Orthonotidae
Anthozoa
 Stauriida - Mucophyllidae
Pseudamplexus sp. Weissermel 1897 horn coral
 Favositida - Agetolitidae
Somphopora sp. Lindström 1883 tabulate coral