Unit 25, Honghuayuan Fm., 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: Honghuayuan 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 4724: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 18.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corynexochida - Leiostegiidae
Annamitella sp. Mansuy 1920 trilobite
 Harpida - Harpetidae
Scotoharpes sp. Lamont 1948 trilobite
 Asaphida - Asaphidae
Psilocephalina sp. Hsu 1948 trilobite
 Asaphida - Taihungshaniidae
Asaphopsis sp. Mansuy 1920 trilobite
 Billingsellida - Polytoechiidae
Tritoechia sp. Ulrich and Cooper 1936
 Pentamerida - Tetralobulidae
 Orthida - Plectorthidae
Nanorthis sp. Ulrich and Cooper 1936
Teratoceroides sp. Xu and Lai 1983
 Endocerida - Manchuroceratidae
Coreanoceras sp. Kobayashi 1931
 Conodontophorida -
Tropodus sp. conodont
Oistodus sp. conodont
Reutterodus sp. conodont
Paroistodus sp. Lindström 1971 conodont
Triangulodus sp. van Wamel 1974 conodont
 Prioniodontida - Balognathidae
  - Strachanognathidae
Cornuodus sp. conodont
  - Serratognathidae
 Protopanderodontida -
Paltodus sp. Pander 1856 conodont
 Protopanderodontida - Protopanderodontidae
Drepanodus sp. Pander 1856 conodont
 Dendroidea -
 Lithistida - Anthaspidellidae
Archaeoscyphia sp. Hinde 1889 demosponge
  - Receptaculitidae
Calathium sp. Billings 1865