Media type: E-Article Title: Principal stages in evolution of Precambrian organic world: Communication 1. Archean and Early Proterozoic Contributor: Sergeev, V. N.; Semikhatov, M. A.; Fedonkin, M. A.; Veis, A. F.; Vorob’eva, N. G. imprint: Pleiades Publishing Ltd, 2007 Published in: Stratigraphy and Geological Correlation Language: English DOI: 10.1134/s0869593807020025 ISSN: 0869-5938; 1555-6263 Keywords: Paleontology ; Stratigraphy ; Geology Origination: Footnote: