DaYangTouGou Fm., DaYanTouGou and DaCaiDan Counties, QingHai Prov., China (Ordovician of China)

Where: QingHai, China (38.0° N, 95.0° E: paleocoordinates 12.3° S, 114.8° E)

• local area-level geographic resolution

When: DaYangTouGou Formation, Late/Upper Llanvirn (463.5 - 460.9 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, sandy, calcareous siltstone and shale

• purplish red siltstone and sandy shale with gray limestone and sandstone in middle

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 8685: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 24.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Actinocerida - Armenoceratidae
Armenoceras sp.
Armenoceras sp. Foerste 1924
Gastropoda
 Murchisoniina - Lophospiridae
Lophospira sp.
Lophospira sp. Whitfield 1886 snail
Rhynchonellata
 Orthida - Orthidae
Orthis sp.
Orthis sp. Dalman 1828