Ixesha leMesozoic: yonke into ekufuneka uyazi

Mesozoic

Emva kokubona yonke into enxulumene naye I-Precambrian eon, sihambela phambili ngexesha lokundwendwela iMesozoic. Ukulandela izikhokelo ze Ixesha lejoloji, iMesozoic lixesha elaziwa ngokuba lixesha lee-dinosaurs. Inamaxesha amathathu abizwa ngokuba yiTriassic, Jurassic kunye neCretaceous. Ngeli xesha, uninzi lweziganeko zenzekile kwiplanethi yethu yoMhlaba esiza kubona ngokweenkcukacha kuyo yonke le post.

Ngaba uyafuna ukwazi yonke into eyenzekileyo kwiMesozoic? Kufuneka uqhubeke ufunda.

Intshayelelo

Ixesha leJurassic

I-Mesozoic yenzeka phakathi phantse Iminyaka engama-245 yezigidi kwaye yaqhubeka de kwaba zizigidi ezingama-65 zeminyaka eyadlulayo. Eli xesha lahlala lilonke malunga neminyaka eyi-180 yezigidi. Ngexesha lokuhamba kweli xesha, amathambo omqolo aphuhlisiwe, ahlukahlukene kwaye oyisa zonke iindawo emhlabeni.

Ngombulelo kuphuhliso lweemvakalelo ezintlanu, ukubonakalisa okutsha kokuvela kwezinto kwaqala ukwenziwa. Ngale nto kuqala ukuvela kwamalungu njengenyathelo elikhulu lokuzivelela kwezinto. Ingqondo lilungu elibonelela ngenkqubela phambili kwezembali.

Isiseko seeseli siba yindawo yokulungelelanisa kunye nokwamkela lonke ulwazi. Ithathelwa ingqalelo njengengqondo yeeseli, kodwa iyaqala ukuthetha ngengqondo esezintlanzini. Ngeli xesha uguquko olulandelayo lwezinto eziphila emanzini nasemanzini, izinto ezirhubuluzayo, iintaka kunye nezilwanyana ezanyisayo zenzeka apho ingqondo ikhula khona kunye noqeqesho lokusingatha inani elikhulu lolwazi.

Ngeli xesha ilizwekazi kunye neziqithi ezaziqokelelwe ePangea ziqala ngokuthe ngcembe ukubonakala kwazo. Iintshukumo ezinkulu ze-orogenic azenzeki kwaye imozulu ngokubanzi izinzile, ishushu kwaye ifumile. Esi sizathu sokuba izilwanyana ezirhubuluzayo zifikelele kuphuhliso olungaqhelekanga ukuya kuthi ga kwii-dinosaurs. Ubungakanani bezilwanyana bezinkulu kwaye, ngenxa yobuninzi bazo, iMesozoic ikwabizwa ngokuba yiXesha leZirhubuluzi.

Izirhubuluzi kunye needinosaurs

Uphuhliso lweDinosaur

Ezinye izirhubuluzi zafunda ukubhabha. Kufuneka kukhankanywe ukuba, njengakulo lonke ixesha kunye namaxesha, bekukho ukuphela kwamaqela amakhulu ezilwanyana afana ne trilobites, graptolites kunye neentlanzi ezixhobileyo.

Kwelinye icala, iintyatyambo kunye nezilwanyana zahlaziywa. IiGymnosperms zavela (izityalo ezinemithambo ezenza imbewu kodwa ziswele iintyatyambo). Ezi zityalo zashiya iiferns. Ekupheleni kobudala, kwavela izityalo ezibizwa ngokuba zii-angiosperms. Zizona zityalo zinemithambo zine-ovary kunye nembewu evalelwe kuyo. Ukongeza, baneentyatyambo kunye neziqhamo.

Ukutsiba okukhulu kokuzivelela kwezinto kube nefuthe elikhulu kubomi bezilwanyana, kuba izityalo zezona ndawo ziphambili zokutya kunye nokutya uninzi lwazo. ii-angiosperms zikwangumbandela wobume babantu, kuba uninzi lwezityalo kwihlabathi liphela zivela kubo.

Ezinkulu Izirhubuluzi okanye zikwabizwa ngokuba ziidinosaurs ezazilawula umhlaba nomoya kwizigidi zeminyaka. Babezona zilwanyana ziphuhlileyo. Ukuphela kwayo kwafika nokupheliswa kokugqibela kweMesozoic. Ngexesha lokuphela kobunzima, amaqela amakhulu ezilwanyana ezingenamqolo anyamalala.

Njengoko besesitshilo ngaphambili, ixesha leMesozoic lahlulwe laba ngamathuba amathathu: iTriassic, iJurassic, kunye neCretaceous. Makhe sibone nganye nganye ngokweenkcukacha.

Ixesha leTriassic

Ukwahlukana kwePangea

Kuthathwe indawo malunga Iminyaka engama-245 ukuya kuma-213 yezigidi zeminyaka. Ngeli xesha ii-ammonoids zokuqala zazalwa. Iidinosaurs zazibonakala kwaye zahluka. Malunga neminyaka engama-230 yezigidi eyadlulayo, isinqe esirhubuluzayo sasikwazi ukuziqhelanisa nomdyarho okhawulezayo. Ukongeza, malunga nezigidi ezingama-205 zeminyaka eyadlulayo kwaphuma ii-pterosaurs (izirhubuluzi ezibhabhayo).

I-Triassic iphawula ukubonakala kwezilwanyana zokuqala ezizinyani kunye neentaka zokuqala. Iintaka zavela kwizilwanyana ezidliwayo, ezikhanyayo, ezinobomi. Iidinosaurs zikwazile ukumiliselwa emoyeni kwaye zoyise imeko-bume yomoya. Ngenxa yoku, amaphambili aguqulwa ngokuthe ngcembe aba ngamaphiko okubhabha kwaye ii-hindlimbs zaya zibhitya ngokukhanya.

Kwelinye icala, umzimba wakhe wawugqunywe ziintsiba ezikhuselayo nezingangeni manzi kwaye ngokuthe ngcembe yaya incipha ngokukhanya. Umzimba wakhe uphela uhlengahlengiswe ngakumbi okanye kancinci.

Ke lona ilizwe, eyona mithi mininzi yayisoloko iluhlaza, ikakhulu iiConifers kunye neeginkgos. Njengoko besesitshilo ngaphambili, ngexesha leTriassic, iPangea yahlulahlulahlula yaba ngamanqwanqwa amabini amakhulu abizwa ngokuba yiLaurasia neGondwana.

Ixesha leJurassic

IJurassic

Ithuba leJurassic lenzeke phantse Iminyaka engama-213 ukuya kuma-144 yezigidi zeminyaka. Njengoko ubona kwiimuvi, eli yayilixesha legolide leedinosaurs. Kungenxa yokuba imozulu ishushu kwaye ifumile kwaye iyathanda ukukhula kwabo. Ukukhula kotyani oludlamkileyo kunye nokwanda kwalo nako kwathandwa.

Njengoko amazwekazi ahlukana, iilwandle zakhula kwaye zadibana, ngelixa iindawo ezinzulu nezishushu zamanzi olwandle zisasazeka kulo lonke elaseYurophu nakwamanye amazwekazi. Ukuphela kweJurassic, olu lwandle lwaqala ukoma, lushiya idipozithi enkulu yamatye ekalika awayevela kwiingqaqa zekorale nakwii-invertebrates zaselwandle.

Inxalenye yomhlaba yayilawulwa ziidinosaurs, ngelixa inani leedinosaurs zaselwandle lalikhula Njenge ichthyosaurs kunye ne-plesiosaurs. Njengoko besitshilo ngaphambili, iidinosaurs zikwazile ukusasazeka ngazo zontathu iindlela ezinokubakho. Izilwanyana ezanyisayo zahlala zincinci ngeli xesha. Iikorale ezakha iingqaqa zakhula emanzini anzulu kunxweme.

Ixesha leCretaceous

Ukuphela kweCretaceous

I-Cretaceous yenzeka malunga I-145 ukuya kwi-65 yezigidi zeminyaka. Lixesha elibonisa ukuphela kweMesozoic kunye nokuqala kwe ICenozoic. Ngeli xesha kukho ukuphela kwezinto ezininzi eziphilayo apho iidinosaurs zinyamalalayo kwaye Iipesenti ezingama-75 zazo zonke izilwanyana ezingenamqolo. Uguquko olutsha luqala ngokusekwe kwizityalo eziqhakazayo, izilwanyana ezanyisayo kunye neentaka.

Izazinzulu ziqikelela ngoonobangela bokutshabalala. Eyona ithiyori ixhaphakileyo yeyokuba utshintsho kwimozulu, kumoya kunye nomxhuzulane obusenzeka ngeli xesha, zongezwa ukuwa kwe-meteorite enkulu kwi-peninsula yaseYucatan. Le meteorite itshintshe kakhulu iimeko zokuphila zoMhlaba kwaye yabangela ukuphela kwayo ngenxa yokungabikho kokuziqhelanisa neemeko ezintsha. Ngesi sizathu, umgca wokuzivelela woMhlaba ujolise kukwahluka kweentaka kunye nezilwanyana ezanyisayo.

Ngolu lwazi ungafunda okuninzi malunga neMesozoic.


Izimvo, shiya eyakho

Shiya uluvo lwakho

Idilesi yakho ye email aziyi kupapashwa. ezidingekayo ziphawulwe *

*

*

  1. Uxanduva lwedatha: UMiguel Ángel Gatón
  2. Injongo yedatha: Ulawulo lwe-SPAM, ulawulo lwezimvo.
  3. Umthetho: Imvume yakho
  4. Unxibelelwano lwedatha: Idatha ayizukuhanjiswa kubantu besithathu ngaphandle koxanduva lomthetho.
  5. Ukugcinwa kweenkcukacha
  6. Amalungelo: Ngalo naliphi na ixesha unganciphisa, uphinde uphinde ucime ulwazi lwakho.

  1.   UMauro neumann sitsho

    Unomdla kakhulu ngolwazi oluneenkcukacha nolucacileyo lwexesha ngalinye kunye nexesha, enkosi, enkosi kakhulu!