Unit 29, 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 shale and lime mudstone

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 4720: 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
unclassified
  -
Cyrtomodus sp.
Trilobita
 Asaphida - Hungaiidae
Hungioides sp.
Hungioides sp. Kobayashi 1936 trilobite
 Asaphida - Asaphidae
Megalaspides sp., Pseudobasilicus sp.
Megalaspides sp. Brögger 1886 trilobite
Pseudobasilicus sp. Reed 1930 trilobite
Rhynchonellata
 Orthida - Orthidae
"Sinorthis sp." = Sinorthis, "Yichangorthis sp." = Sinorthis
"Sinorthis sp." = Sinorthis
"Yichangorthis sp." = Sinorthis
 Orthida - Plectorthidae
Mimella sp.
Mimella sp. Cooper 1930
 Orthida - Euorthisinidae
Euorthisina sp.
 Orthida - Paurorthidae
Nereidella sp.
 Pentamerida - Tetralobulidae
Pseudoporambonites sp.
 Pentamerida - Clarkellidae
Yangtzeella sp.
Yangtzeella sp. Kolarova 1925
Strophomenata
 Billingsellida - Polytoechiidae
Tritoechia sp.
Tritoechia sp. Ulrich and Cooper 1936
 Strophomenida - Taffiidae
Leptella sp.
Leptella sp. Hall and Clarke 1892
Conodonta
 Prioniodontida - Oistodontidae
Oistodus sp.
Oistodus sp. Pander 1856 conodont
 Prioniodontida - Balognathidae
Baltoniodus sp.
Baltoniodus sp. Lindstrom 1971 conodont
 Protopanderodontida - Protopanderodontidae
Protopanderodus sp., Scolopodus sp.
Protopanderodus sp. Lindström 1971 conodont
Scolopodus sp. conodont
 Protopanderodontida - Cornuodontidae
Cornuodus sp.
Cornuodus sp. conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus sp.
Drepanoistodus sp. Lindstrom 1971 conodont
 Paraconodontida -
Westergaardodina sp.
Westergaardodina sp. Müller 1959 conodont
  -
Nasusgnathus sp.
Nasusgnathus sp. Ni 1983 conodont
Pterobranchia
 Dendroidea - Acanthograptidae
Dictyonema sp.
Dictyonema sp. Hall 1851 graptolite
 Graptoloidea - Dichograptidae
Azygograptus sp., Didymograptus sp.
Azygograptus sp. Nicholson and Lapworth 1875 graptolite
Didymograptus sp. McCoy 1851 graptolite