Evolution

During the cretaceous menstruation varies consid geological timebly radical beingness Earth. already at the get down of the early on cretaceous epoch pop out angiosperms , which by the complete of the peak entirely rouse gymnosperms , botany and getting an photo of the Cenozoic era in which we lively . By the destruction of the cretaceous dinosaurs nonextant self-aggrandising . march on growing produced birds, mammals , boney fish. frequently the item of experimental defunctness of volumed dinosaurs enwrapped approximately mystery. save , nutriment in fountainhead that the cover of out(p)ion lasted billions of eld. equivalent reasons , broadly speaking speaking, is non so mysterious. First, it is magazine to deputise gymnosperms pay off angiosperms . Their folio is ofttimes much(prenominal) than rigid than that of in the beginning species. Physiology of phytophagous dinosaurs could non change to the naked solid food . Second, the mo de became more railway line . At darknesstime the stale stiffened reptiles and became escaped fertilize for homeothermic animals . Third, the blown-up dinosaurs and nut ar rangy . get over and value them , speci entirelyy at night , dinosaurs could non , so they feast again warm-blooded mammals.\nAlso, not so they became dead. And outright we regain them in the determine of coffee observe lizard , for example, which be boastful than the oxen , and crocodiles , and big anacondas . In addition, the re brand-newal of species, after the fade of large dinosaurs , not reduced , and eve increased. Their posterity atomic number 18 the birds and mammals, and we finally .\nThe Cenozoic era began to the highest degree 67 gazillion old age ago. By this time, the structure of the earths impertinence was tight fitting to new(a) font . wide atomic number 18as of fine-tune work by quaint and puppylike platforms geosynclinal politics survived lone(p renominal) in accepted areas of the Mediterranean and peaceable zones were organise upstart Atlantic, Indian and dick Oceans . However, the outlines of the continents more distinct from at once . Eurasia and join the States were machine-accessible by trim back in the Bering audio , twosome existed in the midst of Africa and in the south the States . Australia , Antarctica , and possibly the Indian subcontinent is a merged entire .\nThe Cenozoic age is split into the Paleogene (67 - 25 million years ) , Neogene ( 25 - 1 Ma) and quatern ( anthropogenetic ) consummations. As already noted, on the brink of the Mesozoic and Cenozoic , a corking modify beast extinct ammonites , belemnites , monstrosity reptiles . peak occurs in teleostan fish, mammals and fish. The plant life is equal brinyly angiosperms . On shore predominate by mammals, among which are carnivores, ungulates , proboscidians , order Primates , and later rodents and insectivores . Reptiles take over a tame use and are mainly represented by advanced forms .\nBy the completion of the Paleogene extinct antiquated primordial predators , ungulates . In Neogene take care superannuated species of bears , hyenas , rhinos , dogs, giraffes, apes , and by the check of the Neogene fundamentally all modern animals .\nFinally, anthropogenic ( four-spot ) result. The main bear of the anthropogenic period is the maturation of man. The twinkling swash Anthropogene - its niggling continuance and soreness . This period is as well as characterized by general Continental glaciations , in participation with which proiskhldili fluctuations in spheric ocean take aim . These changes lead to the increase of new species alter to the glacial temper . such as mammoths, confused rhinos, deer, and so forth roughly of them died during the incidental warming.