Sanjiezi (Cambrian of China)

Where: Yunnan, China (24.7° N, 102.5° E: paleocoordinates 35.2° N, 161.1° E)

When: Eoredlichia-Wutingaspis trilobite zone, Yu'anshan Member (Heilinpu Formation), Stage 3 (521.0 - 514.0 Ma)

Environment/lithology: deltaic; gray, yellow mudstone

Size classes: macrofossils, mesofossils

Preservation: adpression, replaced with limonite, replaced with carbon

Collection methods: " Specimens are reposited in the Early Life Evolutionary Laboratory at China University of Geosciences

•(prefix ELEL-), Early Life Institute at Northwest University (prefix ELI-), Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences (prefixes NIGP- and ELRC-), Research Center for

•Chengjiang Biota at Yunnan University (prefix RCCBYU-), and Yunnan Institute of Geological Science (prefix YDKS-)."

Primary reference: Q. Ou, S. Xiao, J. Han, G. Sun, F. Zhang, Z. Zhang, and D. Shu. 2015. A vanished history of skeletonization in Cambrian comb jellies. Science Advances 1(6) [V. Syverson/V. Syverson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 225155: authorized by Val Syverson, entered by Val Syverson on 27.04.2022, edited by Phil Novack-Gottshall

Creative Commons license: CC BY (attribution)

Taxonomic list

Sedentaria
 Terebellida -
Iotuba chengjiangensis Zhang et al. 2023
Scleroctenophora
  -
Maotianoascus octonarius Chen and Zhou 1997
Gemmactena actinala Ou et al. 2015
Trigoides aclis Luo et al. 1999
Batofasciculus ramificans Hou et al. 1999
Thaumactena ensis Ou et al. 2015