Unit 26, Dawan Fm., Lower Mbr., Huanghuachang and Yiching, Hubei Prov., China (Ordovician of China)

Where: Hubei, China (33.0° N, 111.0° E: paleocoordinates 12.8° N, 140.9° E)

• local area-level geographic resolution

When: Lower Member (Dawan Formation), Arenig (478.6 - 466.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified grainstone

• Sparry limestone

Primary reference: X. Wang, L. Xian, S. Ni, Q. Zheng, G. Xu, T. Zhou, C. Lai and Z. Li. 1987. Biostratigraphy of the Yangtze Gorge Area. Part (2) Early Paleozoic Era. Geological Publishing House, Beijing 43-142 [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 4723: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 18.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

 Asaphida - Asaphidae
Megalaspides sp. Brögger 1886 trilobite
 Billingsellida - Polytoechiidae
Tritoechia sp. Ulrich and Cooper 1936
 Pentamerida - Clarkellidae
Yangtzeella sp. Kolarova 1925
 Orthida - Paurorthidae
 Orthida - Plectorthidae
Mimella sp. Cooper 1930
 Conodontophorida -
Triangulodus sp. van Wamel 1974 conodont
 Prioniodontida -
Oepikodus sp. conodont
 Prioniodontida - Balognathidae
  - Strachanognathidae
Cornuodus sp. conodont
Scolopodus sp. conodont
Acodus sp. Pander 1856 conodont
Scandodus sp. Lindstrom 1955 conodont
 Protopanderodontida -
Drepanoistodus sp. Lindstrom 1971 conodont
Paltodus sp. Pander 1856 conodont
 Protopanderodontida - Protopanderodontidae
Drepanodus sp. Pander 1856 conodont
Nasusgnathus sp. Ni 1983 conodont