Unnamed Mid and Upper Silurian (Upper Part) in Northern Jigeng, Xinjiang Prov. (Silurian to of China)

Where: Xinjiang, China (40.0° N, 76.0° E: paleocoordinates 36.4° S, 97.0° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Ludlow to Ludlow (427.4 - 419.2 Ma)

• Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. Unit as a whole thought to be Middle and Upper Silurian, but fossils are from upper part and suggest Ludlow-Pridoli age.

• group-level stratigraphic resolution

Environment/lithology: marine; gray, green siliciclastic sediments and limestone

• Correlation chart indicates BA3 based on shelly fauna.
• "gray, gray-green, and dark-gray clastic rocks intercalated with limestone, and volcanic rocks, having a thickness of 1400-220 m"

Primary reference: E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27875: authorized by Michael Foote, entered by Michael Foote on 15.01.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Favositida - Favositidae
Favosites ex gr. hisingeri, Squameofavosites sp.
Favosites ex gr. hisingeri Milne-Edwards and Haime 1851 tabulate coral
Squameofavosites sp. Chernyshev 1941 tabulate coral
 Auloporida - Syringoporidae
Syringopora sp.
Syringopora sp. Goldfuss 1826 tabulate coral
 Heliolitida - Heliolitidae
Heliolites sp.
Heliolites sp. Dana 1846 tabulate coral