GuLangXia and GuLang Counties (Ordovician of China)

Also known as CheLunGou Fm., GuLangXia and GuLang Counties, GanSu Prov., China

Where: GanSu, China (38.0° N, 102.0° E)

• Paleocoordinates: 32.6° N, 100.4° E (Wright 2013)

• local area-level geographic resolution

When: Zhongbao Formation, Llandeilo (461.1 - 458.4 Ma)

• PJW: given as Chelungou, but that is an older group. The Llandeilo-aged rock here is Zhongbao formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, green, cherty/siliceous sandstone and limestone

• grayish green arkose and slate with red siliceous limestone and breccia and sandstone

Size class: macrofossils

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 8556: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.08.2000

Creative Commons license: CC0 (CC0)

Taxonomic list

Gastropoda
 Murchisoniina - Lophospiridae
Lophospira sp. Whitfield 1886 snail
 Murchisoniina - Eotomariidae
Liospira sp. Ulrich and Scofield 1897 snail
 Euomphalina - Helicotomidae
Ophiletina sp. Ulrich and Scofield 1897 snail
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
 Strophomenida - Strophomenidae
Strophomena sp. Rafinesque and De Blainville 1824