Dongzhi [Pangwangcun Section, Huangboling Fm], 90 m (Cambrian of China)

Where: Anhui, China (30.1° N, 117.0° E: paleocoordinates 22.3° N, 155.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Wutingaspis-Eoredlichia trilobite zone, Huangboling Formation, Atdabanian (521.0 - 516.0 Ma)

• The section starts in the Piyuancun Formation. Succeeding strata consist of the Huangboling Formation and the lower part of the Yangliugang Formation.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, carbonaceous mudstone

• The upper member of the Piyuancun Formation is composed of about 23 m of siliceous sandstone with intercalations of carbonaceous shale. In addition, lenticular limestone beds occur in the basal part of this member. The Huangboling Formation consists of three members. The lower member is composed of about 32 m of "algal stone coal" and black carbonaceous shale containing sponge spicules. The middle member, about 40 m thick, contains limestones with Hupeidiscus orientalis. The lower part of the upper member is composed of about 130 m of black carbonaceous mudstone containing complete sponges; the upper part of this member consists of about 377 m of gray silty mudstone yielding trilobites.

Size class: macrofossils

Collection methods: COLLECTOR: Multiple collectors. REPOSITORY: Not stated in text.

Primary reference: A. Yang, M. Zhu, J. Zhang and G. Li. 2003. Early Cambrian eodiscoid trilobites of the Yangtze Platform and their stratigraphic implications. Progress in Natural Science 13(11):861-866 [P. Wagner/S. Tweedt]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96659: authorized by Pete Wagner, entered by Sarah Tweedt on 17.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Demospongiae
 Protomonaxonida - Leptomitidae
Leptomitella sp.
Leptomitella sp. Rigby 1986 demosponge