Unit 28, 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: offshore shelf; lithified, argillaceous carbonate

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 4721: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 18.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Strophomenata
 Strophomenida - Taffiidae
"Leptella sp." = Leptella, "Eosericoidea sp." = Leptella
"Leptella sp." = Leptella Hall and Clarke 1892
"Eosericoidea sp." = Leptella Hall and Clarke 1892
 Billingsellida - Polytoechiidae
Martellia sp. Wirth 1936
Tritoechia sp. Ulrich and Cooper 1936
Rhynchonellata
 Orthida - Orthidae
"Sinorthis sp." = Sinorthis, "Yichangorthis sp." = Sinorthis
"Sinorthis sp." = Sinorthis
"Yichangorthis sp." = Sinorthis
 Orthida - Plectorthidae
Mimella sp. Cooper 1930
 Orthida - Paurorthidae
 Pentamerida - Clarkellidae
Yangtzeella sp. Kolarova 1925
Ostracoda
 Podocopida -
Altha sp. ostracod
 Hollinocopida - Tetradellidae
Dilobella sp. ostracod
Trilobita
 Trinucleida - Trinucleidae
Hanchungolithus sp. Lu 1956 trilobite
 Asaphida - Asaphidae
Pseudobasilicus sp. Reed 1930 trilobite
 Corynexochida - Leiostegiidae
Pseudocalymene sp. Pillet 1974 trilobite
 Phacopida - Pliomeridae
Guizhoupliomerops sp. Zhu and Yin 1978 trilobite
Pterobranchia
 Dendroidea - Dendrograptidae
Dendrograptus sp. Hall 1858 graptolite
 Graptoloidea - Phyllograptidae
Pseudophyllograptus sp. Cooper and Fortey 1982 graptolite
Tetragraptus sp. Salter 1863 graptolite
Phyllograptus sp. Hall 1858 graptolite
 Graptoloidea - Dichograptidae
Didymograptus sp. McCoy 1851 graptolite
Conodonta
 Ozarkodinida -
Periodon sp. Hadding 1913 conodont
 Paraconodontida -
Westergaardodina sp. Müller 1959 conodont
  - Coleodontidae
Coleodus sp. Branson and Mehl 1933 conodont
 Belodellida - Belodellidae
Stolodus sp. Lindström 1955 conodont
Coelocerodontus sp. Ethington 1959 conodont
 Prioniodontida - Acodontidae
Tropodus sp. Kennedy 1980 conodont
Acodus sp. Pander 1856 conodont
Triangulodus sp. van Wamel 1974 conodont
 Prioniodontida - Balognathidae
Baltoniodus sp. Lindstrom 1971 conodont
 Prioniodontida - Oistodontidae
Oistodus sp. Pander 1856 conodont
 Prioniodontida - Rhipidognathidae
Bergstroemognathus sp. Serpagli 1974 conodont
  -
Nasusgnathus sp. Ni 1983 conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus sp. Lindstrom 1971 conodont
Paroistodus sp. Lindström 1971 conodont
 Protopanderodontida - Protopanderodontidae
Drepanodus sp. Pander 1856 conodont
Scolopodus sp. conodont
Juanognathus sp. Serpagli 1974 conodont
Protopanderodus sp. Lindström 1971 conodont
 Protopanderodontida - Clavohamulidae
 Protopanderodontida - Cornuodontidae
Cornuodus sp. conodont