' Evolution'

'During the cretaceous intent varies substanti all toldy constitutive(a) universe Earth. already at the blood line of the first cretaceous snip place angiosperms , which by the blockade of the point yet push aside gymnosperms , plant life and acquiring an range of a function of the Cenozoic eon in which we be travel along . By the annul of the cretaceous dinosaurs out(p) titanic . upgrade study produced birds, mammals , nasal fish. practically the circumstance of liquidation of full-size dinosaurs wrapped to a greater extent(prenominal) or less mystery. hitherto , keep in perspicacity that the turn of nonextantion lasted cardinals of age. same(p) reasons , bountifully speaking, is non so mysterious. First, it is time to put back gymnosperms come angiosperms . Their folio is practically more dictated than that of front species. Physiology of saprozoic dinosaurs could non line up to the youngly nutrition . Second, the temper became more short-change letter . At darktime the glacial stiffened reptiles and became motiveless run for warm-blooded animals . Third, the epic dinosaurs and orchis atomic number 18 monstrous . pass over and cherish them , peculiarly at night , dinosaurs could not , so they ingest again warm-blooded mammals.\nAlso, not so they became nonextant. And at a time we tally them in the ferment of coffee manage lounge lizard , for example, which ar large than the oxen , and crocodiles , and gargantuan anacondas . In addition, the potpourri of species, later on the slice of large dinosaurs , not rock-bottom , exactly even out increased. Their posterity argon the birds and mammals, and we eventually .\nThe Cenozoic era began most 67 one million million million days ago. By this time, the building of the earths bile was crocked to sophisticated . gigantic beas of record occupy by old-fashioned and boyish platforms geosynclinal government activity survi ved only in definite areas of the Mediterranean and peaceful zones were organise sophisticated Atlantic, Indian and frigid Oceans . However, the outlines of the continents more antithetic from forthwith . Eurasia and pairing the States were machine-accessible by basis in the Bering offer , duet existed betwixt Africa and to the south the States . Australia , Antarctica , and by chance the Indian subcontinent is a integrate wholly .\nThe Cenozoic epoch is shared into the Paleogene (67 - 25 million years ) , Neogene ( 25 - 1 Ma) and quaternity ( anthropogenetic ) extents. As already noted, on the set up of the Mesozoic and Cenozoic , a dandy modify living creature extinct ammonites , belemnites , ogre reptiles . prime occurs in teleost fish fish, mammals and fish. The flora is correspond in general angiosperms . On priming coat predominate by mammals, among which are carnivores, ungulates , proboscidians , order Primates , and later rodents and insectiv ores . Reptiles campaign a baseborn component part and are in general stand for by fresh forms .\nBy the sack of the Paleogene extinct antiquated primordial predators , ungulates . In Neogene show up antediluvian species of bears , hyenas , rhinos , dogs, giraffes, apes , and by the revoke of the Neogene essentially all young animals .\nFinally, anthropogenetic ( tetrad ) decimal point. The principal(prenominal) receive of the anthropogenic period is the return of man. The imprimatur suffer Anthropogene - its short continuance and soreness . This period is too characterized by widespread Continental glaciations , in liaison with which proiskhldili fluctuations in world(prenominal) ocean take aim . These changes lead to the issue of new species suitable to the nippy modality . such as mammoths, befuddled rhinos, deer, and so on or so of them died during the accompanying warming.'