Xianfeng xif1/22 (Cambrian of China)

Where: Yunnan, China (25.5° N, 103.1° E: paleocoordinates 36.2° N, 163.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Watsonella crosbyi small shelly zone, Dahai Member (Zhujiaqing Formation), Meishucunian (530.7 - 521.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, silty dolomite

• The Dahai Member is characterized by whitish dolostone, silty dolostone and few layers of chertified phosphorite. SSFs are common in the silty dolostone that overlies a chertified phosphorite.

Size class: microfossils

Preservation: replaced with phosphate

Primary reference: B. Yang, M. Steiner, G. X. Li and H. Heupp. 2014. Terreneuvian small shelly faunas of East Yunnan (South China) and their biostratigraphic implication. Palaeogeography, Palaeoclimatology, Palaeoecology 398:28-58 [L. Na/L. Na/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 201523: authorized by Lin Na, entered by Lin Na on 13.05.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cambroclavida
  - Zhijinitidae
Zhijinites longistriatus
Hyolitha
 Orthothecida - Circothecidae
Conotheca cf. subcurvata
 Orthothecida -
Paragloborilus subglobosus
Aculifera
  - Halkieriidae
Halkieria sthenobasis
Halkieria sthenobasis Luo and Jiang 1982
 Sachitida - Siphogonuchitidae
Lomasulcachites macrus, Siphogonuchites triangularis, Lopochites quadrogonus
Lomasulcachites macrus Luo et al. 1982
Helcionelloida
  - Stenothecidae
Watsonella crosbyi
Watsonella crosbyi Grabau 1900
  - Helcionellidae
Oelandiella korobkovi, "Papilloconus cf. explanatus" = Helcionella explanata, "Bemella simplex" = Securiconus simplex, Asiapatella sinuata, Emarginoconus mirus
Oelandiella korobkovi Vostokova 1962
"Papilloconus cf. explanatus" = Helcionella explanata Feng et al. 2000
"Bemella simplex" = Securiconus simplex Yü 1979
Asiapatella sinuata Parkhaev and Demidenko 2010