Also known as Shihniulan Fm. (Upper Part) at Hanjiadian, Songkan, Tongzi Co., N Guizhou Prov.

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: Shihniulan 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 Shihniulan Formation is underlain by the Songkan Fm., and is possibly equivalent to part of the Spirograptus turriculatus zone." Formation as a whole spans from late Aeronian to early Telychian. Presumably the upper part is Telychian, but this is not entirely clear. Yuan et al. (2020) state that this assemblage is Late Aeronian.

• member-level stratigraphic resolution

Environment/lithology: marine; limestone and marl

Size classes: macrofossils, mesofossils

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 27835: authorized by Michael Foote, entered by Michael Foote on 14.01.2003, edited by Pete Wagner

Creative Commons license: CC BY (attribution)