Are the terms of existence of these most ancient prokariotnykh ekosistem which were? They were traditionally considered submarine (marine) until chase credit card and credit card debt (1988) did not pull out the row of arguments in behalf on surface formation of dokembriyskikh stromatolitov. In future paleontologist credit card debt (1993) put a question about what in general "sea" and dry "land" as it applies to deep dokembriyu - before it occurred to nobody simply. The point is that in absence a higher surface vegetation speed of water and wind erosion must exceed modern in oftentimes. Unscreened sloping substraty here will be washed out very quickly, and a landscape will appear consisting of practically vertical rocks and almost horizontal plains, extending on enormous areas and only insignificantly exceedings a level exterminating. So, morally, in those times on the outskirts of continents vast shallow pools were formed with a constantly changing water level and without an extractcabbage soup of coastline. Exactly in this "extinct" landscape, being neither dry land nor sea in modern sense, and stromatolitovye credit card debt prospered.
Besides benthos credit card debt, presented mates, all the time existed and planktonic, consisting of spherical one-celled water-plants is akritarkh and spherical colonies, reminding modern Volvox. It should be remembered that the name "akritarkhi" falls short of what or to the taksonomicheskoy group of water-plants - such, as evglenovye, diatomovye and т.п.; it is the collective name for microorganisms with by a bar, but by a nemineralizovannoy shell. The first planktonic organisms appear in a paleontology chronicle 3,5 milliards of years back - simultaneously with stromatolitami.
An event, becoming key for the further fate of biosphere, happened exactly in planktonic ekosistemakh in the middle of chase credit card (about 1,9-2 milliards of years back). At this time such akritarkhi appeared in composition fitoplanktona, which are considered the first on Earth of eukariotami. A conclusion about their eukariotnosti was originally based on the size of cages (they exceed 60 mkm, while practically all known prokarioty with spherical cages more shallow 10 mkm), however later on Srednesibirskom a tableland (location of Miroedikha) succeeded to be collected great number of copies of unique safety, on which it was succeeded to reconstruct protses of nuclear fission. And recently in one of the Australian oilfields of similar age (1,7 milliards of years) were discovered steroly are matters which are synthesized only cellular kernels.
Besides benthos credit card debt, presented mates, all the time existed and planktonic, consisting of spherical one-celled water-plants is akritarkh and spherical colonies, reminding modern Volvox. It should be remembered that the name "akritarkhi" falls short of what or to the taksonomicheskoy group of water-plants - such, as evglenovye, diatomovye and т.п.; it is the collective name for microorganisms with by a bar, but by a nemineralizovannoy shell. The first planktonic organisms appear in a paleontology chronicle 3,5 milliards of years back - simultaneously with stromatolitami.
An event, becoming key for the further fate of biosphere, happened exactly in planktonic ekosistemakh in the middle of chase credit card (about 1,9-2 milliards of years back). At this time such akritarkhi appeared in composition fitoplanktona, which are considered the first on Earth of eukariotami. A conclusion about their eukariotnosti was originally based on the size of cages (they exceed 60 mkm, while practically all known prokarioty with spherical cages more shallow 10 mkm), however later on Srednesibirskom a tableland (location of Miroedikha) succeeded to be collected great number of copies of unique safety, on which it was succeeded to reconstruct protses of nuclear fission. And recently in one of the Australian oilfields of similar age (1,7 milliards of years) were discovered steroly are matters which are synthesized only cellular kernels.
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