M304A/27, opposite Isit' village, near Tiiktirikteekh R. mouth: Tommotian, Russian Federation

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Hyolithelminthida - Hyolithellidae
Hyolithellus tenuis Rozanov and Missarzhevsky 1966
Hyolithelminthida - Torellellidae
Torellella lentiformis (Syssoiev 1962)
Archaeocyatha - Monocyathida - Monocyathidae
Archaeolynthus polaris
Archaeocyatha - Ajacicyathida - Ajacicyathidae
Ajacicyathus tkatschenkoi
Nochoroicyathus mirabilis
Archaeocyatha - Ajacicyathida - Dokidocyathidae
Dokidocyathus regularis
Archaeocyatha - Archaeocyathida - Loculicyathidae
Robustocyathus robustus (Vologdin 1937)
Archaeocyatha - Capsulocyathida - Cryptoporocyathidae
Cryptaporocyathus junicanensis
Archaeocyatha - Capsulocyathida - Coscinocyathidae
Coscinocyathus rojkovi
Helcionelloida - Pelagiellida - Aldanellidae
Aldanella rozanovi Rozanov et al. 1969
Zhegallo 1983
Hyolithida - Sulcavitidae
Burithes sp. Rozanov et al. 1969
Tuojdachithes sp. Rozanov et al. 1969
Orthothecimorpha - Circothecida
Coleolella billingsi (Syssoiev 1962)
see common names

Geography
Country:Russian Federation State/province:Yakutia
Coordinates: 60.8° North, 125.3° East (view map)
Paleocoordinates:13.1° South, 14.2° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Cambrian Epoch: Terreneuvian
Stage: Stage 2 10 m.y. bin: Cambrian 2
Key time interval: Tommotian Zone:  Lapworthella tortuosa
Age range of interval: 525.5 - 521 m.y. ago
Stratigraphy
Formation:Pestrotsvet
Local section:M304A Local bed:27 m
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: orignally entered as Lower Tommotian; Aldanocyathus sunnaginicus zone, this is barely present in this seciton and Layer 7 is Lapworthella tortuosa subzone, Dokidocyathus regularis zone on Fig. 6 (Rozanov et al. 1969).
Lithology and environment
Primary lithology:glauconitic,red "limestone"
Secondary lithology: claystone
Includes fossils?Y
Lithology description: The limestones are ... brick red, argillaceous, interspersed with arenaceous material and scarce glauconitic grains. There are innumerable worm tracks on the bedding plane. Some bands are obliquely laminated. A thin band of gray limestones is occasionally encountered. Archeocyathid bioherms are widespread in the upper part of the member.
Environment:reef, buildup or bioherm
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Reef 2803; Gastropoda of Siberia, Locality (3) - Lena River, opposite of Isit - Layer 7
Database number:45856
Authorizer:M. Aberhan, P. Wagner Enterer:S. Nurnberg, P. Wagner
Modifier:M. Krause Research group:marine invertebrate
Created:2004-12-10 02:59:02 Last modified:2015-08-25 09:19:06
Access level:authorizer only Released:2005-03-10 02:59:02
Creative Commons license:CC BY
Reference information

Primary reference:
13330. 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]

Secondary references:

121971% E. A. Zhegallo. 1983. Yarusnoye rasuchleneniye nizhnego kembriya Sibiri, Atlas Okamenelostey, Glava Klass Gastropoda. Lower Cambrian stage subdivision of the Siberia, Atlas of Fossils, Chapter Gastropoda. Trudy Instituta Geologii i Geofiziki (Novosibirsk) 558:96-100 [M. Aberhan/S. Nurnberg/O. Alfaro]