Unit 30, 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: deep subtidal shelf; lithified, argillaceous carbonate and shale

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 4719: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 18.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Phyllograptidae
Phyllograptus sp.
Phyllograptus sp. Hall 1858 graptolite
 Graptoloidea - Dichograptidae
Azygograptus sp., Didymograptus sp.
Azygograptus sp. Nicholson and Lapworth 1875 graptolite
Didymograptus sp. McCoy 1851 graptolite
Conodonta
 Prioniodontida - Balognathidae
Baltoniodus sp.
Baltoniodus sp. Lindstrom 1971 conodont
 Prioniodontida - Oistodontidae
Oistodus sp.
Oistodus sp. Pander 1856 conodont
 Prioniodontida - Acodontidae
Acodus sp.
Acodus sp. Pander 1856 conodont
  -
Nasusgnathus sp.
Nasusgnathus sp. Ni 1983 conodont
 Ozarkodinida -
Periodon sp.
Periodon sp. Hadding 1913 conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus sp., Paroistodus sp.
Drepanoistodus sp. Lindstrom 1971 conodont
Paroistodus sp. Lindström 1971 conodont
 Protopanderodontida - Cornuodontidae
Cornuodus sp.
Cornuodus sp. conodont
 Protopanderodontida - Protopanderodontidae
Protopanderodus sp., Scolopodus sp.
Protopanderodus sp. Lindström 1971 conodont
Scolopodus sp. conodont
Strophomenata
 Strophomenida - Taffiidae
Leptella sp.
Leptella sp. Hall and Clarke 1892
Rhynchonellata
 Pentamerida - Clarkellidae
Yangtzeella sp.
Yangtzeella sp. Kolarova 1925
 Orthida - Paurorthidae
Nereidella sp.
 Orthida - Orthidae
Sinorthis sp.
 Orthida - Plectorthidae
Mimella sp.
Mimella sp. Cooper 1930
Cephalopoda
 Endocerida - Endoceratidae
Dideroceras sp.
Dideroceras sp. Flower 1950
Trilobita
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
 Trinucleida - Trinucleidae
Ningkianolithus sp.
Ningkianolithus sp. Lu 1954 trilobite
 Asaphida - Asaphidae
Pseudobasilicus sp., Megalaspides sp.
Pseudobasilicus sp. Reed 1930 trilobite
Megalaspides sp. Brögger 1886 trilobite