5 February 2002 Microfossils in Early Archaen graphites of Aldan Shield and some aspects of panspermia
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The source of carbon of Early Archean graphites of Nimnyr suite of Aldan shield was cyanobacterial mat. In the region of its development there existed eucariots of diatoms type. It confirms the earlier supposition that eucariots were as ancient gropu of microorganisms as procariots. A well developed microbiota Early Archean means that there was no time for biopoese, forming cells and further evolution of organisms on Earth and consequently there was a possibility of bringing life to the Earth from Solar objects by representatives of all the three lines of microorganisms - arphea, bacteria and eucariots. The ability of bacterial organisms to form mineral-organic cocoons in transition to anabiotic state under conditions of permafrost as well as the ability of microorganisms remnants to preserve their biochemical peculiarities and cell structure that could be revived during long periods of geological age makes this possibility even more real. The evidence of microorganisms in ancient graphites enables us to refer these highcarbon formations to the rank of prospective objects for cognition of biological diversity of the Earth biosphere at the initial stages of its development.
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Stanislav I. Zhmur, Vitalii I. Duda, Felix M. Roizeman, "Microfossils in Early Archaen graphites of Aldan Shield and some aspects of panspermia", Proc. SPIE 4495, Instruments, Methods, and Missions for Astrobiology IV, (5 February 2002); doi: 10.1117/12.454769; https://doi.org/10.1117/12.454769

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