Malyi Chaydakh (Mount Konus) Section. Lower beds, Ust-Yudoma Formation, Member 3 (Cambrian of Russian Federation)

Where: Siberia, Russian Federation (57.3° N, 131.2° E: paleocoordinates 14.6° S, 17.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Purella antiqua small shelly zone, III Member (Ust-Yudoma Formation), Manykaian (541.0 - 530.0 Ma)

• Puerella antiqua zone; given as Vendian but Gubanov & Peel say N-D (basal Cambrian)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, gray dolomite

• dark gray bedded dolomite (from key)

Size classes: macrofossils, mesofossils

Primary reference: V. V. Khomentovsky and G. A. Karlova. 1993. Biostratigraphy of the Vendian-Cambrian beds and the lower Cambrian boundary in Siberia. Geological Magazine 130(1):29-45 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 50316: authorized by Pete Wagner, entered by Pete Wagner on 12.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Scyphozoa
 Anabaritida - Anabaritidae
Anabarites sp. Voronova and Missarzhevsky 1969 jellyfish
"Tiksitheca korobovi" = Anabarites korobovi Rozanov and Missarzhevsky 1966 jellyfish
Cambrotubulus sp. Rozanov et al. 1969 jellyfish
Cambrotubulus decurvatus Rozanov et al. 1969 jellyfish
Purella cristata
  - Maikhanellidae
Purella cristata Missarzhevsky 1974
 Sachitida - Siphogonuchitidae
Barskovia
  - Khairkhaniidae
Barskovia sp. Golubev 1976
Helcionelloida
 Helcionellida - Coreospiridae
"Archaeospira sp." = Latouchella
"Archaeospira sp." = Latouchella Cobbold 1921
 Helcionellida - Helcionellidae
Oelandiella sp. Vostokova 1962
Hyolitha
 Orthothecida -