Baizai, Xundian (Cambrian to of China)

Also known as Baizai, Xundian - [Zhongyicun Mbr, Yuhucun Fm]

Where: Yunnan, China (25.6° N, 103.1° E: paleocoordinates 36.1° N, 163.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Anabarites trisulcatus - Protohertzina anabarica / Siphogonuchites triangularis - Paragloborilus subglobosus small shelly zone, Zhongyicun Member (Zhujiaqing Formation), Meishucunian to Meishucunian (541.0 - 530.0 Ma)

• LITHOSTRATIGRAPHIC RELATIONS: From the Zhongyicun Mbr of the Zhujiaqing Fm. AGE: Meischucunian stage in Feng et al (2001); placed here in Nemakit-Daldynian according to Steiner et al. (2007) based on correlation of Zhongyicun Mbr to lower Meischucunian= Nemakit-Daldynian. STRATIGRAPHIC POSITION: From upper phosphatic bed (Feng et al., 2001).

•Li & Xiao (2004) put this as the Anabarites trisulcatus–Protohertzina anabrica; (II) Siphogonuchites triangularis–Paragloborilus subglobosus;

• bed-level stratigraphic resolution

Environment/lithology: lithified, phosphatic limestone

• ENVIRONMENT: Not stated in text.
• LITHOLOGY: Phosphatic limestone. LITHIFICATION: Lithified on the basis of facies and sample preparation.

Size classes: macrofossils, microfossils

Preservation: replaced with calcite, replaced with phosphate

Reposited in the NIGPAS

Collection methods: bulk, chemical,

• COLLECTOR: Not stated in text. REPOSITORY: Nanjing Instutute of Paleontology and Geology (NIPG).

Primary reference: W.M. Feng and W.G. Sun. 2003. Phosphate replicated and replaced microstructure of molluscan shells from the earliest Cambrian of China. Acta Palaeontologica Polonica 48(1):21-30 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49681: authorized by Pete Wagner, entered by Pete Wagner on 23.04.2005, edited by Uta Merkel, Austin Hendy and Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not an exhaustive fauna list; derived from publication with limited taxonomic scope. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Mobergella
  - Mobergellidae
Yunnanopleura accurata
  - Maikhanellidae
"Yunnanopleura biformis" = Yunnanopleura accurata2
"Yunnanopleura biformis" = Yunnanopleura accurata2 Bokova 1985
Canopoconus
  - Maikhanellidae
"Ramenta superata" = Canopoconus superatus3
"Ramenta superata" = Canopoconus superatus3 Feng et al. 2001
Ramenta cambrina
  - Maikhanellidae
"Ramenta cambrina" = Canopoconus superatus2
"Ramenta cambrina" = Canopoconus superatus2 Feng et al. 2001
Canopoconus
  - Maikhanellidae
"Maikhanella perelegans n. sp." = Canopoconus superatus3
"Maikhanella perelegans n. sp." = Canopoconus superatus3 Feng et al. 2001
Purella
  - Maikhanellidae
Purella squamulosa2 Qian and Bengtson 1989
Xiadongoconus luminosus
  - Maikhanellidae
"Maikhanella pristinis" = Xiadongoconus luminosus2
"Maikhanella pristinis" = Xiadongoconus luminosus2 Yü 1979
Aculifera
  - Halkieriidae
"Eohalobia diandongensis" = Ocruranus finial2
"Eohalobia diandongensis" = Ocruranus finial2 Liu 1979
Helcionelloida
 Helcionellida - Helcionellidae
"Yangtzedonta primitiva n. sp." = Absidaticonus ovatus1, Igorella xundianensis2, "Ilsanella cf. orectes" = Ilsanella orectus, Emarginoconus cf. mirus2, "Latouchella cf. korobkovi" = Oelandiella korobkovi2, "Archaeospira ornata" = Oelandiella korobkovi2, "Yangtzespira xindianensis n. sp." = Oelandiella korobkovi4, "Papilloconus explanatus" = Helcionella explanata
"Yangtzedonta primitiva n. sp." = Absidaticonus ovatus1 He and Yang 1982
"Ilsanella cf. orectes" = Ilsanella orectus Jiang 1982
"Latouchella cf. korobkovi" = Oelandiella korobkovi2 Vostokova 1962
"Archaeospira ornata" = Oelandiella korobkovi2 Vostokova 1962
"Yangtzespira xindianensis n. sp." = Oelandiella korobkovi4 Vostokova 1962
"Papilloconus explanatus" = Helcionella explanata Feng et al. 2000