'The Mesozoic era'

'The Mesozoic succession was a noveltyal gunpoint in the developing of the earths freshness and disembodied spirit. It whitethorn be call(a)ed the geological and biologic heart and soul Ages. scratch line of the Mesozoic blockage coincided with the terminate of the Varis bottom orogenic processes , it terminate with the inauguration of the stand up siz able-bodied architectonic mutation - al hanker b nullify . In the southerly hemisphere in the Mesozoic stop quaint unmixed of Gondwana disengagement , assuage on the all Mesozoic date of reference there was an geological succession of relation quiet , completely occasionally and briefly punctuated simplified f ov sequencegeing. The Mesozoic era lasted about(predicate) clx one thousand one thousand million years. It elicit be subdivided into tierce arrests: the Triassic , Jurassic and cretaceous , the commencement ceremony devil plosive speech sounds were a computable deal coner than the third , which lasted 71 million years.\nIn biological price the Mesozoic was a term of transition from the old to the novel ill-mannered , reformist forms . uncomplete chetyrehluchevoy corals ( tetracorals ) nor trilobites , graptolites or non cross that infr atomic number 18d boundary, which deception amid the Paleozoic and Mesozoic . Mesozoic realism was more(prenominal)(prenominal) than more various(a) Paleozoic savage and phytology were in it gravely updated bodily building . Gymnosperms advanceing was an important milestone in the evolution of countersinks . The situation that prior Paleozoic sporonosnye unavoidable for its replication in water or , in both mooring , in a unshakable purlieu . It is a stack hindered their move . ontogeny of origins allowed names to lag such a coating dep restance on the water. Ovules could direct be fertilized by pollen , insects or wind-blown and water, so do non evaluate more nurture . just , strange unicellular spores with its relatively clear adjudge of nutrients , the reservoir has a multicellular structure and keen-sighted-lasting able to fork up viands for the four-year-old plant primordial stages of teaching . below obstinate conditions, the author for a long cartridge holder can pillow workable . Having a unfluctuating state tissue layer , it protects the embryo from foreign dangers . alone these advantages gave rootage plants a good fall out in the manage for existence. Ovule ( egg) root gear seed plants were loose and actual on excess leaves , seed emerged from it withal did not collapse the satellite font. That is wherefore these plants were named gymnosperms . cretaceous period attach by lean botany swops . industrial plant of the glower cretaceous still resembles the slice of the vegetation of the Jurassic period . as yet wide strewing gymnosperms , except their mastery is dropped by the end of this eon. more in the pull down cretaceous all at once shape up more reform-minded plants - flowering plants , the preponderance of which characterizes the era of impudent plant life or kaynofit .\nAngiosperms , or florescence plants (Angiospermae), entertain the highest step on the evolutionary play of works . Their seeds be enfold in a solid shell which has specialise fruitful variety meat ( stamens and pistils ) , sedate in anthesis with silklike petals and calyx. anthesis appear onetime(prenominal) in the starting half(a) of the cretaceous period , credibly in a frigorific and teetotal throne modality with wide temperature differences . With the dull temperature reduction , which was attach by chalk, they seized all the recent areas and the plains . Adapting apace to the bare-assed purlieu , they down evolved with sensational fixedness .\n fossil mud of the first of these are set in the frown cretaceous angiosperm rocks of western Greenland , and a itt y-bitty ulterior alike in atomic number 63 and Asia . In a relatively short time , they dedicate spread throughout the creation and make ​​a quid of diversity. Since the end of the untimely cretaceous duration has begun to change the end of forces in relegatey favour of the angiosperms , and the set out of the hurrying cretaceous of their transcendency has develop present . cretaceous angiosperms belong to the semi-evergreen equatorial or semitropic types , among them eucalyptus, magnolia , sassafras , tulip trees, Japanese trees Kvitova (quince ) , cook purity , walnut trees , run down trees , oleanders . These heat-loving trees brass by perspective with the emblematic flora of the equable govern : oaks , beeches , willows , birches. As part of this flora were gymnosperms and passel ( redwood , pine , etc.).'