Palaeozoic

A Paleozoic Era da dogon isa mataki na ci gaba da Duniya. Yana dade 370 shekaru miliyan.

Bayan samuwar manyan yankunan ƙasar a ƙarshen Proterozoic zamanin, da Palaeozoic zamanin fara m zube tekuna. A cewar da yawa geologists, yayin da akwai daya babbar ƙasar block cewa an kira Pangea ( "dukan duniya" a cikin Girkanci harshe). A duk bangarorin da shi ne kewaye da teku. Tare da wannan babbar block fadi baya a kan lokaci. Saboda haka, Paleozoic zamanin ya lokacin samuwar harsãshensa ga makomar nahiyar. A lokacin da kara ci gaba da na duniya, wadannan sassa za a iya ƙara, to connect (ta hanyar orogenic matakai) ko rage, watse zuwa guda sake, wanda zai iya shiga wani hali na baya har lokacin bai yi ba tukuna shagaltar da matsayi na yanzu nahiyoyi.

A farko jarrabawa na "nahiyar gantali," ya bayyana Alfred Wenger (Jamus a fanning binciken kasa). A cewar shi, da farko, Pangea raba cikin Gondwana da Laurasia.

A lokaci na Paleozoic zamanin ne zuwa kashi da Permian, Carboniferous, Devonian, Silurian, Ordovician da Cambrian (mafi tsufa).

Cambrian mataki fara game da 570 miliyan. Years da suka wuce (a cewar wasu kafofin, kadan a baya). A tsawon lokaci da wannan lokaci, miliyan 70. Years. A farko mataki ne da alaka da juyin fashewa a duniya, a cikin abin da akwai na farko wakilan mafi daga cikin manyan kungiyoyin dabbobi da cewa an san yau.

A iyaka da Precambrian da Cambrian lura a kankara, inda ba zato ba tsammani akwai wata babbar iri-iri na dabba burbushin tare da ma'adinai skeletons. Cambrian juyin fashewa ne daya daga cikin asirai na tarihi na duniya. Don tafi cikin sauki a eukaryotic sel (mafi hadaddun) shi ya dauki biyu da rabi shekaru miliyan. Ta hanyar miliyan 700. Years akwai na farko kwayar. Kuma a kan miliyan 100. Years na duniya karkashin mulkin mallakar m iri-iri na dabbobi. Ya kamata a lura cewa tun lokacin (fiye da miliyan 500 years) a duniya ba su da wani dabba da ciwon fundamentally sabon tsarin da jiki.

Ordovician . Game da miliyan 500 da suka wuce fara da ƙare -. Aƙalla 408 da miliyan da suka wuce.

Mafi yawa daga cikin kudancin yammancin duniya ya dauki Gondwana. Sauran manyan wuraren ƙasar da aka mayar da hankali a Equatorial zone. Sea yayin da sanaki yawa dabbobi, shi ne sosai daban-daban daga cikin mazaunan tekuna na zamanin Cambrian. Ƙasar kuwa kusan m ga rayuwar - babu gona, ba shuke-shuke, damƙar tsawa, rana, sau da yawa mahaukaciyar guguwa da volcanic eruptions.

By ƙarshen Ordovician mataki fara da za a zaba a jihar bakin teku laka, saki da shi, fungi al'umma na algae, kwayoyin. Saboda haka, kasar gona Layer kafa m.

A farkon Silurian kifi dauki siffar, kusa da zamani daya. By karshen mataki fara orogenic tafiyar matakai. A sakamakon haka, da suka kafa Cambrian, da Scandinavian duwãtsu , kuma massifs a Gabashin Greenland da ta Kudu na Scotland.

Devonian mataki ci gaban da Duniya ne halin da mafi girma da bala'i a duniya. A wancan lokaci, akwai wata karo na Greenland, Turai da kuma Arewacin Amirka. Yana kafa wata babbar nahiyar Laurasia.

Carboniferous lokaci (carbon fiber) halin da bambancin sauyin yanayi - canji zo daga karni zuwa karni. Duk da haka, a general, shi (sauyin yanayi) suka sãɓã wa jũna gumi temperate, subtropical da kuma wurare masu zafi zone. Wannan halitta sharadi gwargwado ga yaduwar fadama da gandun daji da ciyayi a kan ƙasar.

Rayuwa a cikin Paleozoic zamanin da aka kafa quite aiki har zuwa karshen na karshe mataki.

299 miliyan. Shekaru da suka wuce, ya fara da karshe mataki na Paleozoic. A kan iyakar da Triassic lokaci shi ne mafi m, a tarihin duniya ta jinsunan nau'i nau'i. A wannan lokaci, shi bace game da 70% ƙasar da kuma 90% na marine kwayoyin. Kamar wancan ƙare Paleozoic zamanin.