ammonites
Unit 23, Lower Mbr., Fengdong'gun Fm., Yanjing Chengbei, Yunnan Prov., China (Ordovician of China)

Where: Yunnan, China (28.0° N, 105.0° E: paleocoordinates 19.9° N, 139.7° E)

• local area-level geographic resolution

When: Lower Member (Fengdong'gun Formation), Arenig (478.6 - 466.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified shale

• dark shale

Primary reference: R. Wang. 1981. Stratigraphic Summary of the Southwestern Region of China. Institute of Geology and Mine Deposit at Chengdu, Ministry of Geology (not published, copy of article deposited with A. I. Miller at the University of Cincinnati, received through S. Mao) 14-61 [A. Miller/P. Novack-Gottshall] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7265: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 21.05.2000