Kuanti Formation, Qujing County, Eastern Yunnan Province (Silurian of China)

Where: Yunnan, China (25.5° N, 103.8° E: paleocoordinates 9.1° N, 129.9° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Kuanti 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. Chen Jun-yuan et al. (1981) extended formation into the Wenlockian, but fossils suggest Ludlow age.

• formation-level stratigraphic resolution

Environment/lithology: marine; argillaceous siltstone and shale

• Correlation chart indicates BA 1-3 position.
• "It consists mainly of yellow-green, argillacoues siltstone, shale with intercalated gray limestone in the lower part, and purple-red to yellow silty shale and mudstone in the upper part. The total thickness is 506.5 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 27771: authorized by Michael Foote, entered by Michael Foote on 08.01.2003, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Grammysiaoides sp.
Should this be Grammysioidea?
Trilobita
 Proetida - Proetidae
Proetus sp. Steininger 1831 trilobite
 Lichida - Lichidae
Ostracoda
  -
Ostracoda indet. Latreille 1802 ostracod
Strophomenata
 Orthotetida - Chilidiopsidae
Morinorhynchus sp. Havlicek 1965
Rhynchonellata
 Athyridida - Retziellidae
"Protathyrisina uniplicata" = Retziella
"Protathyrisina uniplicata" = Retziella
 Spiriferida - Adolfiidae
 Spiriferida - Cyrtiidae
Striispirifer sp. Cooper and Muir-Wood 1951
 Atrypida - Atrypidae
Atrypa sp. Dalman 1828
 Atrypida - Lissatrypidae
Atrypoidea sp. Mitchell and Dun 1920
Bivalvia
 Ostreida - Pterineidae
"Leiopteria sp." = Leptodesma (Leiopteria)
"Leiopteria sp." = Leptodesma (Leiopteria) Hall 1883 oyster
 Pterioida -
 Modiomorphida - Allodesmatidae
Anodontopsis sp. McCoy 1851 clam
 Modiomorphida - Modiomorphidae
Cephalopoda
 Orthocerida - Sichuanoceratidae
Sichuanoceras sp. Chang 1962
  -
unclassified
  -
Vertebrata indet. Lamarck 1801
"undescribed vertebrates"
Conodonta
 Panderodontida - Panderodontidae
  -
 Ozarkodinida -
"Hindeodella cf. equidentata" = Ozarkodina
"Hindeodella cf. equidentata" = Ozarkodina conodont
Osteichthyes
  -
Guiyu oneiros n. gen. n. sp.
Guiyu oneiros n. gen. n. sp. Zhu et al. 2009 lobe-finned fish
Anthozoa
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral
 Favositida - Favositidae
Squameofavosites sp. Chernyshev 1941 tabulate coral
Favosites sp. Lamarck 1816 tabulate coral
 Favositida - Parastriatoporidae
Parastriatopora sp. Sokolov 1949 tabulate coral
 Cystiphyllida - Holmophyllidae
Holmophyllum sp. Wedekind 1927 horn coral
 Stauriida - Mucophyllidae
Mucophyllum sp. Etheridge 1894 horn coral