Where: Nei Mongol, China (42.0° N, 110.0° E: paleocoordinates 23.9° S, 110.0° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Bateaobao Formation, Wenlock to Wenlock (433.4 - 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. Fossils have been referred by earlier authors to the Ludlow. "We suggest that this unit is of Late Wenlock-Ludlow age. The base of this unit is unknown. The overlying unit is poorly known, but may be of Ludlow and Pridoli age, and needs additional study."
• formation-level stratigraphic resolution
Environment/lithology: marine; shelly/skeletal, gray limestone and green, yellow, silty shale
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 27731: authorized by Michael Foote, entered by Michael Foote on 07.01.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Conodonta | |
Panderodus unicostatus Branson and Mehl 1933 conodont | |
"Spathognathodus inclinatus" = Wurmiella excavata
"Spathognathodus inclinatus" = Wurmiella excavata Branson and Mehl 1933 conodont | |
Rhynchonellata | |
? Pentamerus sp. Sowerby 1813 | |
| |
Stenolaemata | |
Stellipora sp. Hall 1847 | |
Cephalopoda | |
Protophragmoceras sp. Hyatt 1900
Phragmoceras sp. Broderip 1839 | |
Deuteropoda | |
Ostracoda indet. Latreille 1802 ostracod | |
Trilobita | |
Scutellum sp. Pusch 1833 trilobite | |
Illaenidae indet. Hawle and Corda 1847 trilobite | |
Encrinuroides sp. Reed 1931 trilobite | |
Cheiruridae indet. Hawle and Corda 1847 trilobite | |
Anthozoa | |
Stylopleura sp. Merriam 1973 horn coral | |
Diplophyllum caespitosum horn coral | |
Altaja maxima horn coral
Altaja regularis horn coral
Altaja sinensis horn coral
Migmatophyllum sp. Pedder 1971 horn coral | |
Mesofavosites sp. Sokolov 1951 tabulate coral
Favosites sp. Lamarck 1816 tabulate coral | |
Tuvaelites sp. Chekhovich 1971 tabulate coral | |
Derivatolites sp. Bondarenko 1971 tabulate coral | |
Stromatoporoidea | |
Syringostromella cf. borealis stromatoporoid sponge | |
Clathrodictyon sp. Nicholson and Murie 1878 stromatoporoid sponge |