Helanshan, NH55 (Cambrian of China)

Where: Ningxia, China (39.0° N, 106.0° E: paleocoordinates 6.4° S, 138.7° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bailiella-Lioparia trilobite zone, Hsuchuang Formation, Taijangian (509.0 - 504.5 Ma)

• Hsuchuangian (N China) = Taijiangian, stage 5 of Cambrian series 3

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

• western marginal part of the North China Platform
• Hsuchuang Formation: gray limestone, oolitic limestone, green or purple shale

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: W. T. Zhang and J. L. Yuan. 1981. Trilobites from the Hsuchuang Formation (lower Middle Cambrian) in western marginal parts of the North China Platform. Geological Society of America Special Paper 187:161-175 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125425: authorized by Wolfgang Kiessling, entered by Uta Merkel on 09.03.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Ptychopariida - Proasaphiscidae
Proasaphiscina taosigouensis n. sp.
Proasaphiscina taosigouensis n. sp. Zhang and Yuan 1981 trilobite