MAYAZAUR - Labarai ... Labaran Makaranta
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Mayasaurus - dinosaur
Mayazavr babban ornithopod ne na dangin duckbill dinosaurs. An fassara daga Latin Maiasaura ma'anar Lizard-uwa. Wannan halitta ta rayu a duniya a ƙarshen zamanin Cretaceous shekaru miliyan 75-65 da suka gabata. Mayazaurs sun kasance manya-manyan dinosaurs kuma sun kai tsawon mita 9, tsayin mita 3 da nauyinsa ya kai tan 6.
Wata rana, masana binciken burbushin halittu na Amurka Jack Horner da Robert Mackela sun ziyarci wani kantin sayar da burbushin halittu a Montana kuma sun gano abin da suke zaton kasusuwa na ɗan Hadrosaurus. Ya kasance 1978, kuma daga wannan lokacin labarin gano Mayazavrs ya samo asali. Masana kimiyya suka sha'awar burbushin halittu kuma suka garzaya zuwa wurin da aka gano kasusuwa.
Mayasaur (lat.Maiasaura)
Abubuwan fashewa da akayi a wurin ta Horner, Makela da abokan aikinsu sun sami sakamako mai ban mamaki. Masana binciken burbushin halittu sun sami nasarar girke girke goma sha huɗu, yara 31 da ƙwai 42. Kamar yadda ya juya, wannan shine farkon farkon jerin abubuwan al'ajabi. Bayan 'yan shekaru bayan haka, a cikin 1984, Horner ya gano ragowar 10,000 na gawawwakin Mayazavrs a cikin mummunan yanayin. Yanzu ba shi yiwuwa a nemo ainihin dalilin da yasa dabbobin suka mutu. Masu binciken sun ba da rahoton cewa fashewar volcanic ta kashe su.
Mayasaur san cikin gida.
An gano yawancin shaidun cewa Mayazaurs kyawawan iyayen ne. Mace ta gina kwano mai kama da yumɓu da laka kuma ta yi layi tare da tsire-tsire masu taushi.
Daular Mayasaurs.
Mace sun gina gida a mazauna duka, da daddare suna zagaye da mashin, suna dumama shi. Gidajen sun kusan mita 2 a diamita da zurfin mita 0.9-1.2. Mayazavra da farawa daga kwai ya kasance tsawon 35 cm tsawo, amma bayan ya cika watanni biyu sai ya zama babba. Iyaye mata suna ciyar da offspringya offspringyansu ta hanyar winganwingana abincin shuka sannan kuma su binne su don childrena childrenansu.
Mayasaur masu sikelin rayuwa.
Da yawa daga cikin motsi, waɗanda masana kimiyya suka gano, yana tabbatar da ɗauka cewa tunanin Mayazaurs ya ciyar da abincin tsirrai: ganyaye da harbe-tsire. Moarfin motsi frayed m shuka abu. Gabaɗaya, Mayazavras kasance herbivores lumana.
Bambancin bayyanar mayasaur.
Dangane da yawancin burbushin ƙafafun dabbobi, masana kimiyya sun yanke shawarar cewa Mayazaurs suna zaune a cikin garkunan dabbobi, kamar yawancin hadrosaur kuma sun hau ƙafa huɗu. Dabbobi na yin ƙaura lokaci-lokaci don neman sababbin wuraren kiwo. Mayasaurs sun yi nasarar kashe magabatan saboda yawan su.
Idan kun sami kuskure, da fatan za selecti yanki na rubutu kuma latsa Ctrl + Shigar.
27.07.2012
Mayazavr (lat.Maiasaura peblescorum) mallakar gidan duckbill dinosaurs ne ko hadrosaurs (Hadrosaurus). Ana kiransu platypuses don sashin gaban kai, mai kama da babban katako na katako.
Wakilan wannan dangi sun kasance yawancin dinosaur na ƙananan Cretaceous. Sun jagoranci rayuwar garke kuma suna cin abincin tsirrai. Mafi girma daga cikinsu shine shantungosaurus, wanda kashinsa aka samu a China. Wannan katon ya kai tsawon mita 13, kuma nauyinsa yakai tan 4.5.
Mayasaurs suna zaune a tsakiyar Arewacin Amurka.
Lokacin rayuwarsu yayi daidai da lokacin bayyanuwar angiosperms. San daji da yawaitar ciyawa masu yawa cike da ciyayi masu daɗi. Yawancin ciyarwar ya haifar da saurin yaduwar mayazaurs da garkunan shanunsu da yawa cikin farin ciki da yawaita yalwar sararin Amurka na zamani.
A cewar masana binciken burbushin halittu John Horner da Bob Mackel da aka gano a Montana a 1978, kasusuwa sun sami damar sake saita kashin lebe.
Rayuwa
Mayasaurs, kamar dukkan hadrosaur, suna zaune a cikin manyan garken dabbobi. Dangantaka tsakanin ƙungiyar an gina ta ne ta tsattsauran ra'ayi kuma, a cewar masu binciken, kowace rukunin masu haɗari suna shugabancin maza da manyan kuma masu hankali.
Sun kasance suna sanya ido da ido a koda yaushe. Halinsu na ƙanshin ya kuma inganta. Wannan tabbaci ne daga tubules a cikin kwalkwalin kasusuwa, da aka haɗa da hancin mujiya. Dinosaurs na herbivorous yana da magabatan da yawa da ke rayuwa kuma rayuwa a cikin garken ya taimaka ya rayu a waɗannan lokutan wahala.
Tare da bayyanar manyan masu farauta, Mayasaurs zasu iya dogaro ne kawai da ƙarfi da ƙarfi a ƙafafunsu, suna gudu duk inda idanunsu suke kallo. Wadanda abin ya shafa sun hada da tsufa, marasa lafiya da kuma dinosaur matasa. In mun gwada da kananan dabbobi, garken sun kori duniya daga yankunanta, ta amfani da busa mai karfi da wutsiya mai dogon wutsiya.
Mayazavr ya sami sunan ta saboda kyawawan halayen uwayenta (Girkanci. "Uwa" da "lizard").
Mace sun sanya ƙwai tare da diamita na kusan 18 cm a cikin gida ɗaya gama. Ya kasance wani jujin da ke shugabantar gida, wata ƙungiyar abokantaka ta mata daga yashi da laka, wadda aka liƙe da ciyawa mai laushi a ciki.
Wannan shawara ce mai hikima. Yayinda wasu iyayen mata ke kiwo a wani wuri kusa, wasu kuma suna taka tsantsan suna kiyaye farjin masarar. Da yawa daga cikin waɗanda suke son cin ƙwai masu ƙoshin a lokacin. Sannan an sami canjin matsara, kowa yayi murna da farin ciki.
A dare, mata suna zagaye da ƙwai, suna jinyarsu da jikinsu. Wasu masu bincike sun yanke hukuncin cewa mayasaurs dabbobi ne masu farin jini.
Wasu lokuta youngan matan da suka gaji sun rasa kulawar su kuma ƙananan fyaɗe waɗanda ke haifar da haɗarin su, kama ƙwai da ake so kuma nan da nan suke ɓoye a cikin ɓoye na kusa. An haifi jikoki kusan lokaci guda.
Babiesan jariran sun kusan 30 cm tsayi kuma ba sa iya motsawa da kansu. A bayyane yake cewa irin wannan jariri yana da haɗari sosai barin barin gida, don haka iyaye mata masu kulawa suka ɗauki mamaye ɗauke da ciyawa zuwa ɗansu.
Bayan watanni biyu, ƙananan mayasaurs sun girma, sun kai tsawon tsayin jiki na 1-1.5, sun bar gida kuma sun shiga cikin garken don neman sababbin wuraren kiwo.
Dinosaurs matasa sun ci abinci da sauri kuma suna girma cikin sauri, suna kai mita 3 a cikin tsawon shekaru biyu. Sannan haɓakar tasu ta ragu, sannu a hankali suka sami nauyi kuma a daidai lokacin da suka kai shekaru 7-8 da haihuwa sun kai tsawon 6-7.
Bayanin
Mayasaurs da suka manyanta sun kai tsawon girman jiki fiye da 9 m da nauyinsa yakai tan 3. An kawata jikin mutum mai girma tare da babban kai tare da karamin crest, an dasa shi akan ƙashin tsoka mai kauri. Wuya ya gajarta kuma bai bada izinin aibata zuwa ganye mai girma ba. Dole ne ya kasance da wadatar ciyawa da ganyayyaki na ƙananan bishiyoyi.
Muarfin katako a cikin cigaban waɗannan dinosaur ya haifar da babban faɗin baki mai kaifin baki tare da kaifi hanci. Jaws suna zaune da yawa tare da ƙananan kaifi haƙoransu, waɗanda ke ba da niƙa abinci.
Hannun gaban ya taqaitaccen kuma yatsu hudu. Hindarfin ƙafafun ƙarfi masu ƙarfi suna da yatsu uku. Dogo, wutsiyar tsoka ya taimaka wa Mayasaur ya riƙe daidaituwa yayin motsi.
Duba: Maiasaura peeblesorum † Horner et Makela, 1979 = Mayasaur (= Mayasaur)
Je zuwa taken sashi: Irin nau'in dinosaurs
Sunan dinosaur na halittar Mayazaura yana nufin "larabci kyakkyawar uwa ce." Mayazaur asalin halittar dinosaurs ne a cikin gidan duckbill dinosaurs (hadrosaurids) wanda ya rayu a ƙarshen Cretaceous.
Tarihin mayazaur na zamani ya dauki nauyinshi a 1978. A lokacin ne masana ilimin burbushin halitta Jack Horner da Robert Makela suka ziyarci shagon burbushin halittu a Montana, Amurka, inda suka gano kasusuwa abin da suke zaton gorin hadarsa ne. Bayan wannan, sun yi sauri zuwa wurin gano su.
Gabaɗaya, Horner, Makela, da ƙungiyar masu binciken burbushin halittu waɗanda ke rakiyar su, sun sami shago goma sha huɗu, cuba'ida talatin da ɗaya, da ƙwai arba'in da biyu. Amma wannan farkon ne. Bayan 'yan shekaru bayan haka, a cikin 1984, Horner ya gano ɓoyayyen ɓoye, wanda a cikin, akwai sama da 10,000 Mayasaur da suka mutu. Dangane da fasali daya, sun mutu anan sakamakon fashewar wutar lantarki, amma tabbas ba zamu taba gano hakan ba.
Mayazaur ya yi tsawon mita 9, kuma nauyinsa ya kai tan 6. Matan Mayazaur sun gina gida-kaman kwano daga laka da yashi, sannan kuma suka yi jigilar su da ciyayi mai laushi. Manyan yankuna sun kafa yankuna gaba daya, kuma mahaifiyar Mayosaurus tana jujjuya kwayayenta da daddare don dumama su. Kowane gida yana da kusan zurfin mita 0.9-1.2 da nisan m 2. calanyan maruƙan da ke ƙyauren sunada tsawon cm 35, amma sai da ya kai watanni biyu sai suka zama biyu.
A cewar wasu kwararru, mayazaura ya ciyar da yaransu, da farko suna cin abincin shuka, sannan a binne su saboda kar su sha wahalar abinci.
Mayazaura dabbobi ne masu son zaman lafiya kuma suna cin abincin tsirrai, galibi harbe da ganyayyaki, wanda ke tabbatar da kasancewar manyan dabobi. Motsi ne waɗanda aka yi niyya don niƙa abinci mai ƙoshin abinci kuma sun fi dacewa da wannan dalili.
Mayazaura mafi yawan lokaci suna motsawa a kan gabar jiki hudu kuma sun jagoranci rayuwar garken. Masana ilimin binciken burbushin halitta sun iya kafa wannan a yawancin halayen da suka bari. Kamar yawancin hadrosaur, Mayasaurs suna zaune a cikin manyan garken, suna ƙaura daga lokaci zuwa lokaci don neman sababbin wuraren kiwo. A bayyane, daga lokaci zuwa lokaci waɗanda ke ci gaba da kai musu farmaki, amma waɗannan dabbobin da ke da aminci sun sami cetonsu ta hanyar ƙaruwa.