Limestones of the Kekexiongkuduke Formation, Eastern Border of Dzhungar Basin (Silurian of China)

Where: Xinjiang, China (45.0° N, 80.0° E: paleocoordinates 4.8° S, 71.2° E)

• coordinate estimated from map

• basin-level geographic resolution

When: Kekexiongkuduke Formation, Ludlow (427.4 - 423.0 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. "This [faunal] list suggests a Late Llandovery-Ludlow age range....Wang Wu-yan and others (1979) placed the formation in the Upper Silurian."

• formation-level stratigraphic resolution

Environment/lithology: marine; tuffaceous sandstone and limestone

• Correlation chart indicates BA 3 position for this formation elsewhere in Xinjiang.
• "It is mainly composed of yellow-green, gray-green, and purplish-green tuff, tuffaceous sandstone interbedded with limestone, and conglomerate. The limestone is rich in fossils [listed]..."

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 27769: authorized by Michael Foote, entered by Michael Foote on 08.01.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Stauriida - Kyphophyllidae
Kyphophyllum sp. Wedekind 1927 horn coral
 Cystiphyllida - Holmophyllidae
 Cystiphyllida - Goniophyllidae
Rhizophyllum sp. Lindström 1866 horn coral
 Heliolitida - Heliolitidae
Heliolites sp. Dana 1846 tabulate coral
 Heliolitida - Pseudoplasmoporidae
Pseudoplasmopora sp. Bondarenko 1963 tabulate coral
 Heliolitida - Plasmoporidae
Squameolites sp. Bondarenko 1963 tabulate coral
corrected from "Squamelites"
 Favositida - Favositidae
Mesofavosites obliquus Sokolov 1951 tabulate coral
Favosites barkolensis tabulate coral
Favosites zhifangensis tabulate coral
Gastropoda
 Euomphalina - Platyceratidae
Platyceras sp. Conrad 1840 snail
Rhynchonellata
 Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
 Pentamerida - Gypidulidae
Gypidula sp. Hall 1867
 Pentamerida - Pentameridae
 Pentamerida - Parastrophinidae
Anastrophia deflexa Sowerby 1839
 Spiriferinida - Spiriferinidae
Spiriferina sp. d'Orbigny 1847
Stenolaemata
 Cystoporata - Constellariidae
 Trepostomata - Heterotrypidae
Leioclema sp. Ulrich 1882
Trilobita
  -
Trilobita indet. Walch 1771 trilobite