\n
Paleontologlar yaln\u0131zca kafatas\u0131n\u0131n uzunlu\u011fu iki metreye ula\u015fan bir “deniz canavar\u0131n\u0131n” kal\u0131nt\u0131lar\u0131n\u0131 ke\u015ffetti. Yakla\u015f\u0131k 246 milyon y\u0131l \u00f6nce, Triyas d\u00f6neminde ya\u015fayan dev hayvan\u0131n v\u00fccudunun toplam b\u00fcy\u00fckl\u00fc\u011f\u00fc 17 metreyi buluyordu.<\/p>\n
Ara\u015ft\u0131rmac\u0131lara g\u00f6re Latince ad\u0131 Cymbospondylus youngorum olan bu deniz s\u00fcr\u00fcngeni, asl\u0131nda bir ihtiyozor t\u00fcr\u00fcyd\u00fc. G\u00f6r\u00fcn\u00fc\u015fleri itibar\u0131yla k\u00f6pekbal\u0131klar\u0131na veya yunuslara benzetilen ihtiyozorlar, 251 milyon y\u0131l \u00f6nce ba\u015flay\u0131p 66 milyon y\u0131l \u00f6nce sona eren Mezozoik D\u00f6nem’de okyanuslara h\u00fckmeden canl\u0131lar aras\u0131ndayd\u0131.<\/p>\n
![](\"https:\/\/istanbulchannel.net\/wp-content\/uploads\/2021\/12\/olaganustu-buyuk-yaratik-kesfedildi-sadece-kafatasi-insan-boyutunda-1.webp\")
<\/p>\n
HIZLA MUAZZAM BOYUTLARA ULA\u015eTI<\/h2>\n
\u00d6te yandan yeni tespit edilen t\u00fcr\u00fcn devasa boyutlar\u0131, ihtiyozorlar\u0131n toplam ya\u015fam s\u00fcrelerinin sadece 2,5 milyon y\u0131ll\u0131k bir b\u00f6l\u00fcm\u00fcnde h\u0131zla irile\u015fti\u011fini ve muazzam boyutlara ula\u015ft\u0131\u011f\u0131n\u0131 g\u00f6sterdi.<\/p>\n
Zira daha \u00f6nce ke\u015ffedilen fosiller, yeni t\u00fcr\u00fcn 2,5 milyon y\u0131l \u00f6nceki en eski akrabas\u0131n\u0131n boyunun bir metreyi bulmad\u0131\u011f\u0131n\u0131 ortaya koymu\u015ftu. Bu irile\u015fme, evrimsel a\u00e7\u0131dan son derece k\u0131sa bir s\u00fcreye i\u015faret ediyor.<\/p>\n
Hakemli bilimsel dergi Science’ta yay\u0131mlanan ara\u015ft\u0131rman\u0131n yazarlar\u0131, bu h\u0131zl\u0131 geli\u015fimi, 251,4 milyon y\u0131l \u00f6nce meydana gelen Permiyen-Triyas Yok Olu\u015fu’nun tetikledi\u011fine inan\u0131yor.<\/p>\n
“YA\u015eAM GER\u0130 GELEB\u0130L\u0130R”<\/h2>\n
Bulgulara g\u00f6re bu dev t\u00fcr, yakla\u015f\u0131k 248 milyon y\u0131l \u00f6nce, yani kitlesel yok olu\u015ftan hemen sonra ortaya \u00e7\u0131km\u0131\u015f ve nesli 90 milyon y\u0131l \u00f6nce t\u00fckenmi\u015fti.<\/p>\n
Ara\u015ft\u0131rman\u0131n yazarlar\u0131ndan Lars Schmitz, “D\u00fcnyan\u0131n y\u0131k\u0131c\u0131 bir yok olu\u015ftan \u00e7\u0131k\u0131p toparland\u0131\u011f\u0131 d\u00f6nemde, ihtiyozorlar\u0131n devasa boyutlara balinalardan \u00e7ok daha h\u0131zl\u0131 ula\u015ft\u0131\u011f\u0131n\u0131 ke\u015ffettik” diye konu\u015ftu:<\/p>\n
“Bu bir umut \u0131\u015f\u0131\u011f\u0131 ve ya\u015fam\u0131n esnekli\u011finin bir i\u015fareti. E\u011fer \u00e7evresel ko\u015fullar uygunsa evrim \u00e7ok h\u0131zl\u0131 ger\u00e7ekle\u015febilir ve ya\u015fam geri gelebilir.”<\/p>\n
Hakemli bilimsel dergi Nature Geoscience’ta 2012’de yay\u0131mlanan bir ara\u015ft\u0131rma, D\u00fcnya’n\u0131n bu yok olu\u015ftan sonra toparlanmas\u0131n\u0131n yakla\u015f\u0131k 9 milyon y\u0131l s\u00fcrd\u00fc\u011f\u00fcn\u00fc ortaya koymu\u015ftu. T\u00fcm deniz t\u00fcrlerinin y\u00fczde 96’s\u0131n\u0131n ve karalardaki omurgal\u0131 t\u00fcrlerinin de y\u00fczde 70’inin yok olmas\u0131na yol a\u00e7an olay, “B\u00fcy\u00fck \u00d6l\u00fcm” diye de an\u0131l\u0131yor.<\/p>\n
“DEN\u0130Z EJDERHASI G\u0130B\u0130 B\u0130R HAYVAN HAYAL ED\u0130N”<\/h2>\n
‘B\u00fcy\u00fck \u00d6l\u00fcm’den sadece 5 milyon y\u0131l sonra ortaya \u00e7\u0131kan Cymbospondylus youngorum’un devasa boyutlar\u0131 bu nedenle daha da etkileyici bir hale geliyor. A\u011f\u0131rl\u0131\u011f\u0131n\u0131n 45 tonu buldu\u011fu d\u00fc\u015f\u00fcn\u00fclen hayvan, bug\u00fcnk\u00fc Kuzey Amerika’n\u0131n bat\u0131 k\u0131y\u0131s\u0131 a\u00e7\u0131klar\u0131nda, o d\u00f6nemde var olan Panthalassic Okyanusu’nda ya\u015f\u0131yordu.<\/p>\n
Bu hayvan sulara h\u00fckmederken k\u0131talar hen\u00fcz ayr\u0131lmam\u0131\u015ft\u0131 ve Panthalassic, birle\u015fik haldeki kara k\u00fctlesini \u00e7evreleyen bir s\u00fcper okyanustu.<\/p>\n
![](\"https:\/\/istanbulchannel.net\/wp-content\/uploads\/2021\/12\/olaganustu-buyuk-yaratik-kesfedildi-sadece-kafatasi-insan-boyutunda-2.webp\")
<\/p>\n
Independent T\u00fcrk\u00e7e’nin aktard\u0131\u011f\u0131 bilgiye g\u00f6re; yunuslar ve balinalar gibi hava soluyan bu hayvanlar, suda hareket etmelerini sa\u011flayan aerodinamik bir v\u00fccuda, derinliklerde daha iyi g\u00f6r\u00fc\u015f olana\u011f\u0131 sunan b\u00fcy\u00fck g\u00f6zlere, koni \u015feklinde di\u015flerle dolu \u00e7enelere ve bal\u0131k ya da kalamar yakalamak i\u00e7in uygun, uzun bir kafatas\u0131na sahipti.<\/p>\n
Schmitz, “Deniz ejderhas\u0131 gibi bir hayvan hayal edin: Aerodinamik v\u00fccut, epey uzun, y\u00fczge\u00e7lere d\u00f6n\u00fc\u015fm\u00fc\u015f uzuvlar ve uzun bir kuyruk” ifadelerini kulland\u0131:<\/p>\n
“Bu yeni fosil, ihtiyozorlar\u0131n dev boyutlar\u0131n\u0131n h\u0131zl\u0131 evrimini etkileyici bir \u015fekilde belgeliyor.”
<\/p>\n
Kaynak: Haber Global<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
Dev yarat\u0131k yakla\u015f\u0131k 246 milyon y\u0131l \u00f6nce bir s\u00fcper okyanusta ya\u015f\u0131yordu. Dev hayvan\u0131n fosili ilk kez 1998’de ABD’nin Nevada eyaletindeki…<\/p>\n","protected":false},"author":2,"featured_media":31601,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185,188],"tags":[],"class_list":["post-31600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-manset","category-yasam"],"_links":{"self":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/posts\/31600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/comments?post=31600"}],"version-history":[{"count":0,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/posts\/31600\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/media\/31601"}],"wp:attachment":[{"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/media?parent=31600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/categories?post=31600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/istanbulchannel.net\/index.php\/wp-json\/wp\/v2\/tags?post=31600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![](\"https:\/\/istanbulchannel.net\/wp-content\/uploads\/2021\/12\/olaganustu-buyuk-yaratik-kesfedildi-sadece-kafatasi-insan-boyutunda.jpg\")
<\/p>\n