DuoQuanShan Fm., ShiHuiGou and DaCaiDan Counties, QingHai Prov., China (Ordovician of China)
Where: QingHai, China (38.0° N, 95.0° E: paleocoordinates 38.0° N, 95.0° E)
• local area-level geographic resolution
When: DuoQuanShan Formation, Arenig (478.6 - 466.0 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; lithified, concretionary, gray, argillaceous limestone and chert
• light gray limestone with chert at top and nodular dark and muddy limestone at bottom
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 8687: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 24.08.2000