Shuanghe, Changning (Ordovician of China)

Where: China (31.2° N, 121.4° E: paleocoordinates 5.2° N, 133.5° E)

When: Expansograptus hirundo - Exigraptus clavus graptolite zone, 15 Member (Daguanshan Formation), Dapingian (470.0 - 467.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; siltstone

Size class: macrofossils

Preservation: cast

Reposited in the NIGPAS

Primary reference: R. Zhan, J. Jin, and P. Chen. 2007. Brachiopod diversification during the Early–Mid Ordovician: an example from the Dawan Formation, Yichang area, central China. Canadian Journal of Earth Sciences 44:9-24 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186136: authorized by Pete Wagner, entered by Pete Wagner on 15.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Billingsellida - Polytoechiidae
Tritoechia ? mina
species id based on other papers.
 Orthida - Plectorthidae
? Pseudomimella ? formosa
species id based on other papers.