YinGou Group, XiaYan Fm., WuliGou and SuBei Counties, QingHai Prov., China (Ordovician of China)

Where: QingHai, China (40.0° N, 95.0° E: paleocoordinates 0.5° S, 107.2° E)

• local area-level geographic resolution

When: XiaYan Formation, Llanvirn (466.0 - 460.9 Ma)

• YinGou Group

• formation-level stratigraphic resolution

Environment/lithology: marinelithified

• Marine clastic and carbonate deposit
• marine clastic and carbonate deposit

Primary reference: Stratigraphic Group of Quing Hai Province. 1980. Regional stratigraphic tables of the north western China region: Volume of NinXia Province. Geological Publishing House, Beijing, China [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8683: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 24.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Artiopoda
 Agnostida - Metagnostidae
Geragnostus sp. Howell 1935
Craniata
 Craniida - Craniidae
Petrocrania sp. Raymond 1910
Rhynchonellata
 Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
 Orthida - Plaesiomyidae
Campylorthis sp. Ulrich and Copper 1942
 Atrypida - Cyclospiridae
Cyclospira sp. Hall and Clarke 1893
 Atrypida - Anazygidae
Catazyga sp. Hall and Clarke 1893