Location 25 Horizon 13 (Ordovician of China)

Where: Shaanxi, China (34.4° N, 109.7° E: paleocoordinates 23.4° S, 125.4° E)

• coordinate estimated from map

When: Fengfeng Formation, Trentonian (457.3 - 449.6 Ma)

• Outcrops in central and southern Hebei and central and southern Shanxi. Comprises 20-130 m, Trentonian aged

Environment/lithology: marine; lithified, dolomitic, black limestone

• Medium to thick bedded black limestones in the upper part and brownish grey edgewise conglomeratic dolomites and yellowish grey dolomites in the lower part. The lower portion of the black limestone is rich in cephalopods

Size classes: macrofossils, mesofossils

Preservation: cast

Collection methods: Trilobites only; Fengfeng formation, location 25 horizon 13, Shaanxi provence, China

Primary reference: Z. Zhou and R. A. Fortey. 1986. Ordovician trilobites from north and northeastern China. Palaeontographica Abteilung A 192:157-210 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 157296: authorized by Melanie Hopkins, entered by Shaun Mahmood on 11.06.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Asaphida - Asaphidae
Lonchobasilicus gansuensis