Nemnekey Section, upper half of bioherm [Sunagin Mbr, Pestrotsvet Fm] (Cambrian of Russian Federation)

Also known as Reef 1831

Where: Siberia, Russian Federation (57.2° N, 132.0° E: paleocoordinates 14.6° S, 17.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Anabarites trisulcatus small shelly zone, Pestrotsvet Formation, Nemakit-Daldynian (538.8 - 525.5 Ma)

• Dokidocyathus regularis zone. AGE: Nemakit-Daldynian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Anabarites trisulcatus zone).

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• varriegated limestone with archaeocyathan bioherms (from key)

Size class: macrofossils

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: biostratigraphic analysis

PaleoDB collection 50419: authorized by Pete Wagner, entered by Pete Wagner on 14.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Scyphozoa
 Anabaritida - Anabaritidae
"Anabarites ternarius" = Selindeochrea ternaria Rozanov et al. 1969 jellyfish
Tiksitheca licis Rozanov et al. 1969 jellyfish
Anabarites trisulcatus Voronova and Missarzhevsky 1969 jellyfish
 Conularina - Hexangulaconulariidae
? Arthrochites emeishanensis Chen 1982 jellyfish
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloria sp. Walcott 1920
Aculifera
  - Halkieriidae
Purella cristatus
  - Maikhanellidae
"Purella cristatus" = Purella cristata
"Purella cristatus" = Purella cristata Missarzhevsky 1974
Helcionelloida
 Pelagiellida - Aldanellidae
Aldanella sp. Vostokova 1962
Aldanella ex gr. attleborensis Shaler and Foerste 1888
 Helcionellida - Helcionellidae
Igorella hamata Yü 1979
"Latouchella maidipingensis" = Oelandiella maidipingensis Yü 1974
 Helcionellida - Coreospiridae
"Archaeospira sp." = Latouchella
"Archaeospira sp." = Latouchella Cobbold 1921
Salanyella
  -
Salanyella sp. Missarzhevsky 1980
Watsonella crosbyi
  -
"Heraultipegma sibirica" = Watsonella crosbyi
"Heraultipegma sibirica" = Watsonella crosbyi Grabau 1900
Watsonella
  -
"Heraultipegma sp." = Watsonella
"Heraultipegma sp." = Watsonella Grabau 1900
Orthothecimorpha
 Circothecida -
Hyolitha
 Orthothecida -
"Kotuitheca sp." = Kotuyitheca, Nikatheca cf. digna
"Kotuitheca sp." = Kotuyitheca Missarzhevsky 1974
 Orthothecida - Triplicatellidae
 Orthothecida -
Turcutheca sp. Rozanov et al. 1969
 Orthothecida - Circothecidae
Conotheca mammilata Rozanov et al. 1969
 Orthothecida - Allathecidae
Allatheca cf. concinna Rozanov et al. 1969