Also known as Songkan Formation at Hanjiadian, Tongzi County, N Guizhou Province
Where: Guizhou, China (28.6° N, 106.9° E: paleocoordinates 8.6° N, 126.9° E)
• coordinate based on political unit
• local area-level geographic resolution
When: Monograptus sedgwicki graptolite zone, Songkan Formation, Aeronian (440.8 - 438.5 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. "The fauna may be roughlycorrelated with a part of the M. sedgwickii zone."
• formation-level stratigraphic resolution
Environment/lithology: marine; gray, calcareous shale and marl
Size class: macrofossils
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 27847: authorized by Michael Foote, entered by Michael Foote on 14.01.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Amplexoides chaoi horn coral | |
Syringoporella sp. Kettner 1934 tabulate coral | |
Trilobita | |
Songkania hanjiadianensis trilobite | |
Rhynchonellata | |
Zygospiraella venusta Rong and Yang 1981 | |
Cephalopoda | |
Songkanoceras sp. Chen et al. 1981 |