Units 1 to 4, Dawan Fm., Yangjiaba, Chengkou County, Sichuan Prov., China (Ordovician of China)
Where: Sichuan, China (32.0° N, 108.0° E: paleocoordinates 15.5° N, 141.5° E)
• local area-level geographic resolution
When: Dawan Formation, Arenig (478.6 - 466.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified, silty shale and limestone
• shale, limestone and siltstone
Primary reference: Sichuan Stratigraphic Work Group. 1978. Regional stratigraphic table of the southwestern region of China, Sichuan part. Geological Publishing House, Beijing, China [A. Miller/P. Novack-Gottshall]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 7649: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 30.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
unclassified | |
Pterobranchia | |
Azygograptus sp. Nicholson and Lapworth 1875 graptolite
Didymograptus sp. McCoy 1851 graptolite | |
Phyllograptus sp. Hall 1858 graptolite | |
Trilobita | |
Megalaspides sp. Brögger 1886 trilobite
Psilocephalina sp. Hsu 1948 trilobite | |
Taihungshania sp. Sun 1931 trilobite | |
Ningkianolithus sp. Lu 1954 trilobite
Hanchungolithus sp. Lu 1956 trilobite | |
Neseuretus sp. Hicks 1873 trilobite | |
Rhynchonellata | |
Cephalopoda | |
Protocycloceras sp. Hyatt 1900 | |
Chisiloceras sp. Gortani 1934 |