Where: Liaoning, China (39.6° N, 122.0° E: paleocoordinates 3.9° N, 145.6° E)

• coordinate based on political unit

• small collection-level geographic resolution

When: Crepicephalina trilobite zone, Zhangxia Formation, Taijangian (509.0 - 504.5 Ma)

• LM7, Zhangxia (=Changhsia) Formation, Crepicephalina zone of N China = Ptychagnostus atavus zone of S China (Peng 2009), Upper Taijiangian, Lower Drumian

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: X. Sun. 1989. Cambrian agnostids from the North China Platform. Palaeontologia Cathayana 4:53-129 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 126905: authorized by Wolfgang Kiessling, entered by Uta Merkel on 19.04.2012

Creative Commons license: CC BY (attribution)