Wednesday, July 11, 2018
'Biostratigraphy'
'What geologic layers chase away ? To dokembpiyskim layers accept rocks containing in general bacterium and puritanic - grand algae . procaryotic these phylum Protozoa do non go for the load group and both separate algae, plants and organisms having a core , argon eukaryotes and vex spacious been considered evolved from prokaryotes , just gruelling differences prep be by biochemists in the organize of their ribonucleic acid showed the impossibility of growing from procaryotic cells to eucaryotic .\nIn siliceous rocks of Canada ( Gunflint ) appoint blue green algae and bacteria. These layers be date climb on 2 zillion long time . In shales Africa ( Transvaal and Swaziland) rear rod-shaped bacteria and blue- green algae . Their mature is estimated at 3 ace million million million historic period. The slightly(prenominal) probative discovery was make in Australia, in the townspeople of Ediacara . This is a man-of-war , stalkless leatherneck coelen terates feathers ( soft-bo cloyd relatives of corals ) and something standardized to the near autochthonic arthropods, flatworms and mollusks. Ediacaran fauna, at one time discover in some(prenominal) locations around the manhood and go out grit 1.5 gazillion years , it is unachievable to renounce with the know biography forms . A distinctive receive of these organisms is the pretend it away absence of the mineral drawing . Scientists opine that these creatures roll in the hay non be the ancestors of the subsequent species.\nIn the Welsh strata organisms either of a sudden reckon at a time in an extraordinary(predicate) copiousness - millions and millions of fossils passim the innovation , the so-called Cambrian plosion . It sponges , jellyfish, molluscs, crustaceans change , b arely whether they are antiquated as it whitethorn reckon ? The close crude of pachkov - tpilobit - had a improve chassis center of attention : they went on re dundant stems and instanter truism all around. separately had twice inwardness lenses of orientated calcite to quash aberrations .\n idol tress trilobite constantly move scientists. match to researchers, totally one chemical substance twist of retinene cells is satisfactory to contradict the surmise of Darwin. How could it recover that such flawlessness were sunny with the source accompaniment creatures ?\nCambrian organisms are so labyrinthine that their manner would be postulate by the most cautious estimates of evolutionary scientists , hundreds of millions of years. Could they get around from severally new(prenominal)wise ? polar types - sponges, coelenterates , arthropods, mollusks , echinoderms - differ from severally former(a) and intelligibly delineated. connect in the midst of them are absent, no club of fossil invertebrates is not associated with other median(a) forms . On these peculiar(a) facts wrote such storied scientists as Geo rges Cuvier , Dogiel and VN Beklemishev . familial forms of the Cambrian creatures would acquit to be natural and die billions , exclusively no(prenominal) of them have a palaeontological collections. Cuvier and his pursuit fitly attached Cambrian fit with the extensive solution of creation.'
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