To the problem of stage subdivision of the Lower Cambrian

  title={To the problem of stage subdivision of the Lower Cambrian},
  author={Alexei Yu. Rozanov and V. V. Khomentovsky and Yu. Ya. Shabanov and G. A. Karlova and A. I. Varlamov and V. A. Luchinina and Tatyana V. Pegel and Yu. E. Demidenko and Pavel Yu. Parkhaev and Igor’ V. Korovnikov and N. A. Skorlotova},
  journal={Stratigraphy and Geological Correlation},
It was a serious mistake when subdivision stratotypes had been disposed of in practice of constructing the General stratigraphic scale, because they cannot be substituted by the boundary stratotypes. A subdivision stratotype and respective GSSP are complementary parts characterizing any stratigraphic unit. The best candidates for stage stratotypes of the Lower Cambrian are certainly sections of the Lena-Aldan region in the Siberian platform, which have been studied in detail during many years… 
Upper Precambrian General Stratigraphic Scale of Russia: Main problems and proposals for improvement
  • S. Dub
  • Geology
    LITHOSPHERE (Russia)
  • 2021
Research subject. Main problems of the General Stratigraphic Scale (GSS) of the Upper Precambrian including uncertainties in the hierarchy of subdivisions are analyzed.Results. Prospects for
The Problematic Fossil Mobergella radiolata as an Index Species of the Lower Cambrian Stages
The biostratigraphy of the lower boundaries of the Atdabanian Stage of the General Stratigraphic Scale of Russia and Stage 3 of the International Chronostratigraphic Chart is discussed. It is
New data on biostratigraphy of the Vendian Nemakit-Daldynian stage in the southern Siberian platform
New paleontological finds in sediments of the Upper Vendian Nemakit-Dadynian Stage from different areas of the southern Siberian Platforms (Yenisei Range, Sayany region, central areas, Patom
Watsonella crosbyi from the lower Cambrian (Terreneuvian, Stage 2) Normanville Group in South Australia
Abstract Correlation of lower Cambrian strata is often confounded by provincialism of key fauna. The widespread occurrence of the micromollusc Watsonella crosbyi Grabau, 1900 is therefore an
Correlation of the Cambrian Evolutionary Radiation: geochronology, evolutionary stasis of earliest Cambrian (Terreneuvian) small shelly fossil (SSF) taxa, and chronostratigraphic significance
Abstract Early faunas with Watsonella crosbyi with or without Aldanella spp. have been equated with the Siberian Tommotian Stage (uppermost Terreneuvian) and used to define a proposed Cambrian Stage
Quo vadis, Tommotian?
Abstract The concept of the Tommotian Regional Stage of the Siberian Platform has been closely linked to the idea of the ‘Cambrian Explosion’ of animals and protists when the entire Earth system
Integrated stratigraphic, geochemical, and paleontological late Ediacaran to early Cambrian records from southwestern Mongolia
In their comment, Landing and Kruse disagree with some of our discussion and, at times, use blanket statements to incorrectly summarize from the Smith et al. (2016) paper. This is not the venue for a


The stage scale of the Cambrian System
Abstract A stage subdivision of the Cambrian System is proposed. In the lower series four stages are distinguished (the Tommotian, Atdabanian, Botomian, Tojohnian); in the middle series, two (the
Global Standard Stratotype‐section and Point (GSSP) of the Furongian Series and Paibian Stage (Cambrian)
The Global Standard Stratotype-section and Point (GSSP) of the Furongian Series (uppermost series of the Cambrian System) and the Paibian Stage (lowermost stage of the Furongian Series), has been
A proposed nomenclature for stages and series for the Cambrian of Laurentia
An internally consistent succession of six named regional stages (from youngest to oldest: Sunwaptan, Steptoean, Marjuman, Delamaran, Dyeran, Montezuman), with their boundaries defined by regional
A Paleogeographic Model for Vendian and CambrianTime
In any attempt to construct a set of paleogeographic reconstructions, it is necessary to make sense out of a variety of sometimes conflicting sets of geological, paleontological, and geophysical
A candidate stratotype for the Precambrian-Cambrian boundary, Fortune Head, Burin Peninsula, southeastern Newfoundland
The Burin Peninsula exhibits an exceptionally thick and essentially continuous succession of marine strata through the Precambrian–Cambrian transition. Fossils are abundant and include trace fossils,
Changing perspectives on Cambrian chronostratigraphy and progress toward subdivision of the Cambrian system
Important steps have been made toward global subdivision of the Cambrian System. The consensus of opinion is that the system should be subdivided into four series representing subequal spans of time.
Biostratigraphy of the Vendian-Cambrian beds and the lower Cambrian boundary in Siberia
Abstract General agreement exists that the position of the base of the Cambrian (Precambrian–Cambrian boundary) should coincide with a biostratigraphic marker that can be widely traced and is linked
Some problems concerning the Precambrian-Cambrian transition and the Cambrian faunal radiation
  • A. Rozanov
  • Geography, Environmental Science
    Journal of the Geological Society
  • 1992
In Siberia, the so-called Khailakh and Manykay Stages of ‘pre-Tommotian’ age are inferred to be partly coeval with the type Tommotian, and to be based on a misunderstanding about the control of
Pre-Tommotian age of the lower Pestrotsvet Formation in the Selinde section on the Siberian platform: carbon isotopic evidence
Carbon isotopic data from the Selinde section in the southeastern part of the Siberian platform area are correlated with the reference isotopic profile from the Lower Cambrian stratotype sections of
How old is the Tommotian
Shelly faunas and phytoplankton from Lower Cambrian (Tommotian) strata within and outside the type area in Siberia indicate that the Tommotian Stage is younger than previously believed. Deposits