NanSiMengZi Fm., DaHaiZi and SuNuan Counties, GanSu Prov., China (Ordovician of China)
Where: GanSu, China (39.0° N, 99.0° E: paleocoordinates 29.9° S, 112.5° E)
• local area-level geographic resolution
When: Nansimengzi Formation, Ashgill (449.5 - 443.7 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; lithified, burrowed, gray, silty, cherty/siliceous mudstone and limestone
• gray black silty mudstone with andesitic tuff and lava with limestone and silty slate toward 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 8564: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.08.2000