Middle Part of Lower to Middle Silurian at Baolige, Ujimqin Qi, Neimonggol Prov. (Silurian to of China)

Where: Nei Mongol, China (45.5° N, 117.0° E: paleocoordinates 32.7° N, 46.8° E)

• coordinate estimated from map

• local area-level geographic resolution

When: 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. "Working Group...of Nei Monggol...placed these rocks in the Llandovery-Wenlock, but without studying the collections we can suggest nothing more than a probable Silurian age." Fossils from middle part of sequence.

• group-level stratigraphic resolution

Environment/lithology: marine; green, yellow, argillaceous siltstone and argillaceous sandstone

• "The unit is 820 m thick. It consists of yellow-green, argillaceous siltstone, graywacke, mudstone, and andesite porphyry. In the middle part of the unit fossils occur..."

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 27788: authorized by Michael Foote, entered by Michael Foote on 09.01.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
"orthotetacid"
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Rhynchonellata
 Rhynchonellida - Camarotoechiidae
 Rhynchonellida - Machaerariidae
 Orthida - Dalmanellidae
Resserella sp. Bancroft 1928
 Atrypida - Lissatrypidae
Lissatrypa sp. Twenhofel 1914