YinGou Fm., AnMen and YuMen cities, GanSu Prov., China (Ordovician of China)

Where: GanSu, China (40.0° N, 98.0° E: paleocoordinates 25.0° S, 117.2° E)

• local area-level geographic resolution

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

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, black, cherty/siliceous shale and limestone

• blackish basalt and silicates and black shale and limestone

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 8567: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
Megistaspis sp. Jaanusson 1956 trilobite
Pseudoasaphus sp. Schmidt 1901 trilobite
 Asaphida - Raphiophoridae
Lonchodomas sp. Angelin 1854 trilobite
Graptolithina
 Graptoloida -
 Graptoloida - Phyllograptidae
Phyllograptus sp. Hall 1858 graptoloid
 Graptoloida -
Isograptus sp. Moberg 1892 graptoloid
Glossograptus sp. graptoloid
Cardiograptus sp. graptoloid
 Bireclinata -
Climacograptus sp. Hall 1865 climacograptid
 Panreclinata - Dichograptidae
Didymograptus sp. McCoy 1851 graptoloid