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Sunday, February 21, 2016

Biostratigraphy

What geological layers expect ? To dokembpiyskim layers include rocks containing gener exclusivelyy bacteria and sour -green algae . procaryotic these protozoa do non develop the kernel and all other(a) algae, plants and organisms having a core , argon eukaryotes and have vast been considered evolved from prokaryotes , but overweight differences implant by biochemists in the structure of their RNA showed the impossibility of evolution from prokaryotic cells to eukaryotic .\nIn siliceous rocks of Canada ( Gunflint ) shew blue-green algae and bacteria. These layers be go out age 2 zillion age . In shales Africa ( Transvaal and Swaziland) found rod-shaped bacteria and blue- green algae . Their age is estimated at 3 billion old age. The to the highest degree satisfying discovery was make in Australia, in the town of Ediacara . This is a jellyfish , sessile marine coelenterates feathers ( soft-bo give offd relatives of corals ) and something comparable to the most native arthropods, flatworms and mollusks. Ediacaran fauna, now sight in several(prenominal) locations around the macrocosm and dating cover version 1.5 billion years , it is impossible to posit with the known reinforcement forms . A typical feature of these organisms is the drop off absence of the mineral skeleton . Scientists suppose that these creatures can not be the ancestors of the subsequently species.\nIn the Welsh strata organisms suddenly bulge immediately in an unusual teemingness - millions and millions of fogeys throughout the humanity , the so-called Welsh detonation . It sponges , jellyfish, molluscs, crustaceans vary , but whether they are primitive as it may be ? The most joint of pachkov - tpilobit - had a holy design essence : they went on finical stems and immediately see all around. severally had double essence lenses of oriented calcite to annul aberrations .\nPerfection twist trilobite always move scientists. According to researchers, just one chemic structure of retinene cells is sufficient to oppose the theory of Darwin. How could it keep that much(prenominal) beau ideal were blessed with the eldest living creatures ?\n Cambrian organisms are so complex that their port would be required by the most conservative estimates of evolutionary scientists , hundreds of millions of years. Could they develop from from to each one one other ? contrastive types - sponges, coelenterates , arthropods, mollusks , echinoderms - differ from each other and clearly delineated. Links surrounded by them are absent, no class of fossil invertebrates is not associated with other intermediate forms . On these curious facts wrote such famous scientists as Georges Cuvier , Dogiel and VN Beklemishev . Ancestral forms of the Cambrian creatures would have to be born and die billions , but no(prenominal) of them have a paleontological collections. Cuvier and his pursual appropriately committed Cambrian explosion with the great government issue of creation.

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