Also known as Yan Chi Wan Group, WuLan-YanChiWan, QingHai Province, China
Where: QingHai, China (37.0° N, 98.0° E: paleocoordinates 30.9° S, 130.8° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Yanchiwan Group, Caradoc (458.4 - 449.5 Ma)
• Thickness of YanChiWan Group is 1530 m; this group is overlain by the Yan Gou Group
Environment/lithology: marine; lithified, pebbly sandstone and metamorphosed, silty, calcareous slate
Size class: macrofossils
Primary reference: Stratigraphic Group of GanSu, QingHai, and Tibet Provinces. 1980. Regional Stratigraphic Table of China: Gansu, Qinghai, and Tibet Provinces [A. Miller/P. Novack-Gottshall/M. Clapham]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 23595: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 17.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Ampyx sp. Dalman 1827 trilobite
Lonchodomas sp. Angelin 1854 trilobite | |
Remopleurides sp. Portlock 1843 trilobite | |
Cyclopyge sp. Hawle and Corda 1847 trilobite | |
Cephalopoda | |
Cycloceras sp. M'Coy 1844 | |
Discoceras sp. Barrande 1867 | |
Pterobranchia | |
Dicranograptus sp. Hall 1865 graptolite |