Where: Xinjiang, China (46.0° N, 83.6° E: paleocoordinates 7.7° S, 69.9° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Qiaergaye Formation, Llandovery to Llandovery (443.4 - 427.4 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. "...paleontologic evidence indicates an Upper Llandovery age for the graptolites, and possibly and Upper Llandovery or Wenlock age for the shelly fossils." Stratigraphic relations discussed by authors imply that the graptolites in type section are from below the middle part of the formation (i.e. below the part yielding shelly fossils).
• member-level stratigraphic resolution
Environment/lithology: marine; tuffaceous, gray, green siltstone and sandstone
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 27816: authorized by Michael Foote, entered by Michael Foote on 13.01.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Stelliporella sp. Wentzel 1895 tabulate coral | |
Heliolites sp. Dana 1846 tabulate coral | |
Placocoenites sp. Sokolov 1955 tabulate coral | |
"Angopora sp." = Thecia (Angopora)
"Angopora sp." = Thecia (Angopora) Jones 1936 tabulate coral | |
"Palaeofavosites sp." = Paleofavosites, Favosites sp., Favosites cf. gothlandicus, Mesofavosites sp.
"Palaeofavosites sp." = Paleofavosites Twenhofel 1914 tabulate coral
Favosites sp. Lamarck 1816 tabulate coral
Favosites cf. gothlandicus Lamarck 1816 tabulate coral
Mesofavosites sp. Sokolov 1951 tabulate coral | |
Spongophyllum sp. Milne-Edwards and Haime 1851 horn coral | |
Disphyllum sp. Fromentel 1861 horn coral | |
Ptychophyllum sp. Milne-Edwards and Haime 1850 horn coral | |
Tryplasma sp. Lonsdale 1845 horn coral | |
Trilobita | |
Phacops sp. Emmrich 1839 trilobite | |
Encrinurus sp. Emmrich 1844 trilobite | |
Strophomenata | |
Leptaena sp. Dalman 1828 | |
Chonetes sp. Fischer de Waldheim 1830 | |
Rhynchonellata | |
"Camarotoechia" sp. Hall and Clarke 1893 | |
Pentamerus sp. Sowerby 1813 | |
Atrypa sp. Dalman 1828 |