Life na Earth na Cretaceous oge

Cretaceous oge ikpeazụ oge, ndị ikpeazụ Mesozoic oge. Ọ nọchikwara site Jurassic, dị ka mgbawa nke geologists, ebe gburugburu 145 nde afọ gara aga na were banyere iri asatọ nde afọ, mgbe nke na mmalite nke Tertiary oge dị iche iche, ndị Cenozoic, oge - "oge nke a ndụ ọhụrụ." The aha nke a kama ogologo ogbo nke mmepe nke Earth natara na njikọ na eziokwu na ọ hapụrụ anyị a nketa nke dị ike nzu ego nke marl na ájá. Ọ bụ ezie na n'oge ndị a iri asatọ nde afọ na Earth mesoghị ọ bụla ọdachi na a mbara ọnụ ọgụgụ, na Ya mere, ikpochapu nke a ọnụ ọgụgụ buru ibu nke osisi na umu anumanu na, ma ije nke tectonic efere, mgbanwe na zuru ụwa ọnụ oké osimiri na mgbanwe ihu igwe mere mmegharị na usoro nke na mmalite nke ndụ .

Cretaceous ike subdivided n'ime sub-ngalaba: na ala na elu nzu. Iji ghọta otú ndụ ghọrọ usoro na n'oké osimiri nile, na ala na na ikuku nke oge, i kwesịrị nkenke mara Itie, ebe ọ bụ na Jurassic ogbo tectonic orogenic Filiks. Na ala Cretaceous oge nke Gondwana na Laurasia wee na-pụọ ọ bụla ọzọ. Kpọmkwem otu usoro mere na Africa na South America. N'ihi ya, Atlantic Ocean na-aghọ esiwanye maara anyị ugbu a guputa. Ma na n'ebe ọwụwa anyanwụ nke Gondwana ya jikọrọ ya Laurasia. Australia bụ ebe ọ na-bi, na ugbu a, ma na mmiri ahụ bilie naanị a atọ nke ugbu ebe.

Upper Cretaceous e ji eziokwu na na n'Ebe Ugwu Ụwa oké osimiri na-etoju malitere-ebili, na nnukwu ebe nke Eastern Europe, Western Siberia, dum Arabia, na fọrọ nke nta niile nke oge a na Canada nọ n'okpuru mmiri. Otú ọ dị, site na njedebe nke Cretaceous oge nke Earth malitere yiri ya udi oge a ụwa nile.

Na Cretaceous oge a gbanwee na idụhe. Ọ N'ezie, bụ ihe ọkụ karịa oge a. Space nke taa Europe kpuchie ya a ebe okpomọkụ oké ọhịa. Otú ọ dị, na elu latitudes nwere alternated kara aka, na oyi snoo na-ada. Dị otú ahụ mgbanwe ihu igwe anana eziokwu na, tinyere spore na gymnosperms pụtara zakrytosemennye osisi. Ndị dị otú ahụ osisi na-beech, birch, ash, ukpa, pụtara na oge nke Cretaceous, anwụghị ruo taa na-enweghị ihe ọ bụla mgbanwe. Land enwetara ndị mbụ okooko osisi - mbụ magnolia, mgbe ahụ, biliri. Na okooko ya nwere uru na ha pollen bụ rụrụ bụghị naanị ifufe, ma ụmụ ahụhụ. Mkpụrụ osisi, na-etinye na mkpụrụ mkpụrụ gbasaa site na anụmanụ na-eri mkpụrụ. N'ihi ya, mkpụrụ osisi na okooko osisi idei mmiri dum planet.

Mgbanwe ndị na-osisi na Cretaceous oge mere ka ntoputa nke ọhụrụ umu nke fauna. Na ikuku Steel flit mbụ urukurubụba na-efe efe anu udia nectar okooko osisi. Oké osimiri na-abịa na-achị foraminifera, nwụrụ anwụ ma na dara mgbe shei nke nyere aha a nile geological oge. Na ha e nwere ndị ọzọ mollusks, umu Amon. The azụ alaeze adịkwaghị azụ shark bụrụ naanị ọkpụkpụ ọkpụkpụ azụ. The ụmụ anụmanụ nke Mesozoic oge - n'elu niile, ndị dinosaurs na n'oge mammals - n'enweghị "kpaliri" si Jurassic na Cretaceous. Ma n'elu nzu ọtụtụ nwụrụ anwụ-ọgwụgwụ alaka nke birdlike dinosaurs ịnwụ pụọ, dị ka archeopteryx. Ma, e nwere nnụnụ - na nna nna nke oge a na geese, plovers, ọbọgwụ na loons.

The Mesozoic Era (Jurassic oge akpan akpan), dị ka ndị a ma ama film, na-mara dị ka ndị oge nke ndị dinosaurs. Ke ofụri ofụri, ọchịchị nke oge ochie dinosaurs chekwara nzu. Ma n'elu ikpeazụ oge, Stegosaurus kpamkpam si ihu nke ụwa, na ya niche nke Tyrannosaurus. Rich osisi mee ka ntoputa nke ọhụrụ ụdị nke na herbivorous dinosaurs: Triceratops, Iguanodon ankylosaur na ndị ọzọ. Anyị nwere ike sị na na Cretaceous oge dainosoo umu di iche iche peaked. Na n'oge a, na-ezo si Refeyim na ha burrows, ha bi na-eme n'ọdịnihu na-achị ndị Earth - mammals. Anụmanụ ndị a, dị ka òké adịghị erute otu mita n'ogologo, ọtụtụ ụdị dị obere egglayers, marsupials testaceous ma ọ bụ ụmụ obere anụmanụ, erikpu ruo 500 g. Ma n'azụ ha bụ ga-eme n'ọdịnihu.