Dawan Fm., BaMianShan, Hunan and Hubei Provinces, China (Ordovician of China)

Where: Hunan and Hubei, China (30.0° N, 111.0° E: paleocoordinates 14.8° N, 138.8° E)

• local area-level geographic resolution

When: Dawan Formation, Dawan (478.6 - 468.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, concretionary, dolomitic, yellow limestone

• yellowish green and grey muddy limestone, purplish red nodular limestone and dolomitic limestone

Primary reference: Stratigraphic Group of Central South China. 1974. Regional stratigraphic data of central South China. Geological Publishing House, Beijing, China [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7717: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 31.05.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Corynexochida - Illaenidae
Illaenus sp. Dalman 1827 trilobite
 Asaphida - Asaphidae
Megalaspides sp. Brögger 1886 trilobite
Isoteloides sp. Raymond 1910 trilobite
Isotelus sp. Dekay 1824 trilobite
"Basiliella sp." = Basilicus (Basiliella) Kobayashi 1934 trilobite
Ptychopyge sp. Angelin 1854 trilobite
Asaphus sp. Brongniart 1822 trilobite
Strophomenata
 Billingsellida - Billingsellidae
Rhynchonellata
 Pentamerida - Clarkellidae
Yangtzeella sp. Kolarova 1925
 Orthida - Glyptorthidae
 Orthida - Orthidae
 Orthida - Plaesiomyidae
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis sp. Hall 1847 clam
Gastropoda
 Euomphalina - Ophiletidae
Ecculiomphalus sp. Portlock 1843 snail
Cephalopoda
 Orthocerida - Baltoceratidae
Cochlioceras sp. Eichwald 1860
 Orthocerida - Orthoceratidae
Michelinoceras sp. Foerste 1932
 Orthocerida -
 Endocerida - Endoceratidae
Vaginoceras sp. Hyatt 1884
Graptolithina
 Graptoloida - Phyllograptidae
Phyllograptus sp. Hall 1858 graptoloid
 Tetragrapta -
Tetragraptus sp. Salter 1863 graptoloid
 Rhombifera - Hemicosmitidae
Hemicosmites sp. Buch 1840