M402/143, 144, 145, 7 km west of Ugino Village (Cambrian of Russian Federation)

Where: Yakutiya, Russian Federation (61.9° N, 135.5° E: paleocoordinates 14.2° S, 19.1° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Lapworthella tortuosa small shelly zone, 5 Member (Yudomian Formation), Tommotian (525.5 - 521.0 Ma)

• Lapworthella tortuosa subzone of Dokidocyathus regularis zone

• bed-level stratigraphic resolution

Environment/lithology: lithified, glauconitic, intraclastic, shelly/skeletal, gray, green limestone

• Greenish gray, beige limestone member having plentiful glauconite grains, particularly in the lwoer beds. The middle band contains a band of foliaceous, highly argillaceous limestones.

Size classes: macrofossils, mesofossils, microfossils

Primary reference: A. Y. Rozanov, V. V. Missarzhevsky, N. A. Volkova, L. G. Voronova, I. N. Krylov, B.M. Keller, I. K. Korolyuk, K. Lendzion, R. Mikhnyar, N. G. Pykhova, and A. D. Sidorov. 1969. Tommotskiu jarus i problema nizhney granisty kembriya [The Tommotian Stage and the Cambrian lower Boundary problem]. Trudy Geoligske Institut Leningrad 206:1-379 [P. Wagner/P. Wagner/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96226: authorized by Pete Wagner, entered by Pete Wagner on 28.05.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Helcionelloida
 Pelagiellida - Aldanellidae
"Aldanella rozanovi" = Aldanella attleborensis
"Aldanella rozanovi" = Aldanella attleborensis Shaler and Foerste 1888
  - Helcionellidae
Latouchella sp., Bemella jacutica, Bemella parula
Latouchella sp. Cobbold 1921
Bemella jacutica Rozanov and Missarzhevsky 1966
Bemella parula Rozanov et al. 1969
Orthothecimorpha
 Circothecida -
"Coleolella billingsi" = Spinulitheca billingsi
"Coleolella billingsi" = Spinulitheca billingsi Syssoiev 1962
Hyolitha
 Orthothecida - Circothecidae
"Edgetheca aldanica" = Conotheca mammilata
"Edgetheca aldanica" = Conotheca mammilata Rozanov et al. 1969
 Orthothecida - Allathecidae
Allatheca sp.
Allatheca sp. Rozanov et al. 1969
Brachiopoda
 Tommotiida - Tommotiidae
Camenella garbowskae, "Camena kozlowskii" = Camenella kozlowskii
Camenella garbowskae Rozanov and Missarzhevsky 1966
"Camena kozlowskii" = Camenella kozlowskii Rozanov and Missarzhevsky 1966
 Tommotiida - Sunnaginiidae
Sunnaginia imbricata
Sunnaginia imbricata Rozanov et al. 1969
Tumulduria
  -
Tumulduria incomperta
Coleoloides
  -
Coleoloides trigeminatus
Coeloscleritophora
 Chancelloriida - Chancelloriidae
Chancelloria sp.
Chancelloria sp. Walcott 1920
Scyphozoa
 Anabaritida - Anabaritidae
Tiksitheca licis, Cambrotubulus decurvatus
Tiksitheca licis Rozanov et al. 1969 jellyfish
Cambrotubulus decurvatus Rozanov et al. 1969 jellyfish
 Hyolithelminthida - Torellellidae
Torellella curvae
 Hyolithelminthida - Hyolithellidae
Hyolithellus tenuis, Hyolithellus vladimirovae
Hyolithellus tenuis Rozanov and Missarzhevsky 1966
Hyolithellus vladimirovae Rozanov and Missarzhevsky 1966