Unit 4, Tongzhi Fm., Guangyingqiao and Qijiang, Sichuan Prov., China ( of China)

Where: Sichuan, China (29.0° N, 107.0° E: paleocoordinates 20.8° N, 144.3° E)

• local area-level geographic resolution

When: Tongzi Formation, Tremadoc (486.5 - 477.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone and dolomite

• limestone, shale and dolomite

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

PaleoDB collection 5422: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 02.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Remopleurididae
"Wanliangtingia sp." = Apatokephalops
"Wanliangtingia sp." = Apatokephalops Lu 1975 trilobite
Rhynchonellata
 Orthida - Plectorthidae
Nanorthis sp. Ulrich and Cooper 1936
Eocrinoidea
 Imbricata -
Imbricata indet. Sprinkle 1973