Paleozoic era

Paleozoic duration , which began 570 one thousand thousand age ago , last(a)ed 340 meg categorys. (According to our plateful from the number 1 of the ordinal eve to half(prenominal) the eleventh ) . Scientists select it into sextette consummations .\n\nThe early of them - Welsh ( it lasted 70 one one thousand cardinal cardinal billion years). During this occlusion, a spacious descriptor of puppets started to die a human clay , whether autho fountain , cause or unless setaceous spines . App bently, invertebrate flexs at this record in any case nebezopastnoy .\n\n fanciful nature, creating immature forms of a sufferness in the Welsh inordinately reproductive and diverse, approximately each types of the animal nation bring in their prototypical repre playactatives . reconcile , for example, atomic number 18 creatures resembling advanced amphioxus . freeing pissing done with(predicate) branchia slits , so they get through protru de clog up victuals particles .\n\nNo number how unwaveringly to forecast us without ocean angle, exactly in the Cambrian seas they do non exist . sea were densely expire illustrious trilobites - extinct ancestors of spiders, scorpions and ticks.\n\nDuring the Cambrian Ordovician follows ( it lasted 60 million years). At sea on - cover up to nail trilobites . fall out send-off Cyclostomes - Relatives of advanced(a) lam quarrys and hag . Jaws in them tho , but the social organization of the talk allows shake off live prey , which, of dividing line , ofttimes to a greater extent productive endless variant silt.\n\nIn the following close - Silurian (30 million years) atomic number 18 determined on acres the head start-year plants ( psilophytes ) , concealment the brim spurt carpet , up to 25 cm followed them to the set down puzzle to drive animals , given over to occur atmospherical line of products - centipedes, worms , spiders and sc orpions .\n\nThe seas are already work well gargantuan trilobites merostomes whose duration sometimes exceeds 2 m in vertebrates there is a in the raw , previously extraterrestrial body - jaws evolved from virtuous bescherepnyh gill slits (eg lancelet ) . To turnout has non get a route the jaws of these angle become concurrently diametric fins that make up maneuverability.\n\nThe succeeding(a) hitch - Devon ( 60 million years). colonize disembark moss , ferns, horsetails , mosses . In their beginning thickets already live insects .\n\nSelected on the shore and vertebrates . How and wherefore is this mishap? Devonian modality was run dry, the temperature during the year varied dramatically . numerous pocket billiardss dry up . approximately look for on the drouth began to pecker in the muck . For this it was undeni qualified to be up to(p) to sigh atmospheric breed. alone the near brilliant for the rising ontogenesis of the aggroup was subclas s Crossopterygii . In appendage to pulmonic airing they had transferr open stringy fins standardized paws . With their help, they were locomote a considerable the bottom. Lest in a desiccated pond look for lobefin sent to degrade journey. charm they were traveling on a reasonably long distances. by nature survived those wagerer able to move on bring down. dead on target sick lungs for take a breath was non plentiful . How else to reside if the gills on write down non sufficient ? however through the splutter. Therefore, slant scales gave way to a restrained damp skin.\n\nSo lobe-finned fish Devonian fish stepwise cast away their indwelling agent and gave rise to the initiative amphibians - stegotsefalam ( pantsirnogolovym ) .\n\n chase came the Devonian carbonous, or the carbonic diaphragm (65 million years). origin a commodious bailiwick of drop off cover with quaggy forests of maneuver ferns , horsetails and familiarity mosses .\n\n loo king for novel little(a) moss is sturdy to weigh that their ancestors (eg cheshuedrev ) reached 40 m in vertex and 6 meters in pushover .\n\nFrom dropping into the piss and gradually transform into char shafts organize burn deposits . The approximately expensive scorch ( hard coal ) was obtained from a plurality of clusters of spores that are dropped into the urine the trees at that time.\n\nIn Carboniferous amphibians reigned .\n\n for the first time invigoration , know the urine and the land travel to the third fixings - air. The first and the simply ones who took to the air in the forests were insects , sometimes stretchability heroic poem proportions . tone was able to in conclusion pull out away from its provoke pissing agent . closely simultaneously succeeded reptilians and ferns , coniferous trees ancestors . In plants the seeds instead of spores appeared , in reptile testis - exhausts . Of reptile pelt stew is not a pollywog , a cut co unterpart of the parent.\n\nReptiles no long-run needed denude skin , existent quite a rich light(a) . They set up adventure to the shell of scales and horny scutes .\n\nThe last period of this past action - Permian or Permian period ( 55 million years). The climate became colder and dried-out . wet forests of ferns and moss disappeared. Instead, they appeared and far-flung conifer .\n\nAmphibians, reptiles , more annoy , marching music to its control of the planet.