Where: Guizhou, China (26.6° N, 106.8° E: paleocoordinates 8.7° N, 126.5° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Upper Kaochaitien Formation, Telychian to Telychian (438.5 - 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. Upper K. Fm. divided into three parts, and as a whole spans the Late Llandovery to Early Wenlock, according to correlation chart. "The fossils from the middle part correlate with those of the Xiushan Formation. Therefore, the lower part of this formation is correlated with the Rongxi Formation [which is herein regarded as middle Late Llandovery], and the upper part is missing in many areas, but may be correlated with the Huixingshao Formation red beds [which are thought herein to be Wenlock, although with some uncertainty]. These formations are close to the Llandovery-Wenlock boundary, but the fossils do not permit precise zonation." This discussion suggests that a lower part is Late Llandovery, middle part is Llandovery to Wenlock, and upper part is Wenlock.
• member-level stratigraphic resolution
Environment/lithology: marine; shale and marl
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 27786: authorized by Michael Foote, entered by Michael Foote on 09.01.2003, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Zelophyllum intermedium horn coral | |
Tabularia kaolingpoensis horn coral
Dentilasma sp. Ivanovskiy 1962 horn coral | |
Ketophyllum intermedium horn coral | |
Multisolenia guizhouensis tabulate coral
Multisolenia vangchangensis tabulate coral | |
Favosites forbesi, Favosites orientalis, Favosites longliensis, Favosites raochaguanensis, Favosites exilis, Favosites gothlandicus
Favosites forbesi tabulate coral
Favosites orientalis tabulate coral
Favosites longliensis tabulate coral
Favosites raochaguanensis tabulate coral
Favosites exilis Sokolov 1952 tabulate coral
Favosites gothlandicus Lamarck 1816 tabulate coral | |
Subalveolites sp. Sokolov 1955 tabulate coral | |
Cephalopoda | |
Bivalvia | |
Bivalvia indet. Linnaeus 1758 clam | |
Cyrtodonta sp. Billings 1858 clam | |
Dysodonta sp. Mansuy 1913 clam | |
Strophomenata | |
Valdaria sp. Bassett and Cocks 1974 | |
Brachyprion sp. Shaler 1865 | |
Rhynchonellata | |
Eospirifer sp. Schuchert 1913 | |
Howellella sp. Kozlowski 1946 | |
Trilobita | |
Chuanqianoproetus sp. Wu 1977 trilobite | |
Encrinuroides sp. Reed 1931 trilobite |