Xia Fm., WuLi-HeiChi and SuBei Counties, GanSu Prov., China (Ordovician of China)

Where: GanSu, China (37.0° N, 95.0° E: paleocoordinates 31.8° S, 130.0° E)

• local area-level geographic resolution

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

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, green sandstone and shale

• grayish green feldspar-rich sandstone and slate

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 8578: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 04.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Dicranograptidae
Dicranograptus sp.
Dicranograptus sp. Hall 1865 graptolite
Rhynchonellata
 Atrypida - Anazygidae
Catazyga sp.
Catazyga sp. Hall and Clarke 1893
Strophomenata
 Strophomenida - Sowerbyellidae
Sowerbyella sp.
Sowerbyella sp. Jones 1928
Cephalopoda
 Tarphycerida - Trocholitidae
Discoceras sp.
Discoceras sp. Barrande 1867
Gastropoda
 Bellerophontida - Tropidodiscidae
Tropidodiscus sp.
Tropidodiscus sp. Meek and Worthen 1866 snail
Trilobita
 Trinucleida - Raphiophoridae
Ampyx sp., Lonchodomas sp.
Ampyx sp. Dalman 1827 trilobite
Lonchodomas sp. Angelin 1854 trilobite
 Asaphida - Asaphidae
Birmanites sp., Vogdesia sp., "Basiliella sp." = Basilicus (Basiliella)
Birmanites sp. Sheng 1934 trilobite
Vogdesia sp. Raymond 1910 trilobite
"Basiliella sp." = Basilicus (Basiliella) Kobayashi 1934 trilobite
 Asaphida - Remopleurididae
Remopleurides sp.
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Cyclopygidae
Cyclopyge sp.
Cyclopyge sp. Hawle and Corda 1847 trilobite
 Corynexochida - Illaenidae
Illaenus sp.
Illaenus sp. Dalman 1827 trilobite
 Phacopida - Cheiruridae
Placoparina sp.
Placoparina sp. Whittard 1940 trilobite
 Proetida - Telephinidae
Telephina sp.
Telephina sp. Marek 1952 trilobite