Where: Jilin, China (43.0° N, 127.0° E: paleocoordinates 13.8° S, 116.9° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Erdaogou Formation, Pridoli (423.0 - 419.2 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. Several different working groups have studied this formation and have subdivided it differently. Ref. 7624 seems inclined to accept the subdivision of the Shenyang Institute into a lower, mainly siliciclastic unit that is Pridolian by ref. 7624, and an upper, mainly carbonate unit that is assigned to the Gedinnian by ref. 7624. Shales unconformably overlying this carbonate unit are thought to be Carboniferous (yield Productus and Fusella). An alternative lithologic sequence is given by Liu and Huang (1977), in which the lithologies mentioned are yellow-green siltstone, gray coarse-grained sandstone, and gray calcareous shale with intercalated limestone lenses.
• member-level stratigraphic resolution
Environment/lithology: marine; siltstone and shale
Collection methods: Collection 25759 is also from the upper part of this formation but is not a subset of this collection.
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 27749: authorized by Michael Foote, entered by Michael Foote on 08.01.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Coelospira sp. Hall 1863 | |
"Stegerhynchus" sp. Foerste 1909 | |
Howellella sp. Kozlowski 1946 | |
Salopina sp. Boucot 1960 | |
Strophomenata | |
Mesodouvillina sp. Williams 1950 | |
Stenolaemata | |
Phaenopora sp. Hall 1851 | |
Semicoscinium sp. Prout 1859 | |
Trilobita | |
Encrinurus sp. Emmrich 1844 trilobite | |
Otarion sp. Zenker 1833 trilobite | |
Anthozoa | |
"Taxopora sp." = Cladopora
"Taxopora sp." = Cladopora Hall 1851 tabulate coral | |
Microplasma sp. Dybowski 1873 horn coral |