66 milyon y\u0131l \u00f6nce, Malta b\u00fcy\u00fckl\u00fc\u011f\u00fcnde bir asteroit Meksika’da bulunan Yucat\u00e1n Yar\u0131madas\u0131’na \u00e7arpt\u0131. Bu durum D\u00fcnya \u00fczerinde felaket etkisi yaratt\u0131 ve gezegen \u00fczerinde bulunan t\u00fcrlerin d\u00f6rtte \u00fc\u00e7\u00fcnden fazlas\u0131 yok oldu.<\/p>\n
Science dergisinde yay\u0131mlanan yeni ara\u015ft\u0131rma, bu canl\u0131lar\u0131n yok olu\u015flar\u0131n\u0131n ard\u0131ndan g\u00f6zlenen ya\u015fam\u0131n tarihine odakland\u0131. Denver Tarih ve Bilim M\u00fczesi’nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten Ian Miller, “D\u00fcnya tarihini sadece bir milyon y\u0131l\u0131n\u0131 incelemek durumunda olsayd\u0131n\u0131z, kesinlikle bu milyon y\u0131l\u0131 se\u00e7erdiniz” a\u00e7\u0131klamalar\u0131nda bulundu.
\nDenver b\u00f6lgesinin belirli alanlar\u0131nda s\u00fcren fosil \u00e7al\u0131\u015fmalar\u0131, b\u00f6lgede 100 y\u0131ldan fazla s\u00fcredir ara\u015ft\u0131rma yapan paleontologlar i\u00e7in yeni de\u011fil. Ancak 2016 y\u0131l\u0131nda biliminsanlar\u0131, fosil ara\u015ft\u0131rmalar\u0131nda kulland\u0131klar\u0131 metotta de\u011fi\u015fime gitti. Arazi taramas\u0131n\u0131n yan\u0131 s\u0131ra, fosiller etraf\u0131nda olu\u015fan kayalar \u00fczerinde de ara\u015ft\u0131rmalar yap\u0131ld\u0131.<\/p>\n
\u00c7al\u0131\u015fman\u0131n y\u00fcr\u00fct\u00fcc\u00fclerinden Tyler Lyson ve meslekta\u015flar\u0131, canl\u0131lar\u0131n yok olu\u015fundan sonra geli\u015fen 2 milyon y\u0131l boyunca etrafa yay\u0131lan memelilerden, s\u00fcr\u00fcngenlerden ve bitkilerden fosil \u00f6rnekleri ald\u0131lar ve bu \u00f6rnekleri incelediler. Bu \u00f6rnekler, o d\u00f6nemin ekosistemini yeniden olu\u015fturmak i\u00e7in kullan\u0131ld\u0131 ve \u00e7al\u0131\u015fma ilk 100 bin y\u0131l boyunca memelilerin \u00e7e\u015fitlendi\u011fini ortaya koydu. Asteroidin gezegene \u00e7arpmas\u0131ndan 300 bin y\u0131l sonra, memelilerde geni\u015f bir toplulu\u011fa sahipti. Maksimum v\u00fccut b\u00fcy\u00fckl\u00fc\u011f\u00fc ise \u00fc\u00e7 kat art\u0131\u015f g\u00f6stermi\u015fti. Yok olu\u015fun ger\u00e7ekle\u015fmesinden yakla\u015f\u0131k 700 bin y\u0131l sonra ise, baklagiller gibi enerji bak\u0131m\u0131ndan zengin bitkilerin t\u00fcketilmeye ba\u015flanmas\u0131yla birlikte daha b\u00fcy\u00fck yap\u0131da hayvanlar do\u011fa i\u00e7inde g\u00f6zlendi.<\/p>\n
New Mexico Do\u011fa Tarihi ve Bilim M\u00fczesi’nden Pallaeontolog Tom Williamson, ara\u015ft\u0131rmaya ili\u015fkin a\u00e7\u0131klamalarda bulunarak, “Bu \u00e7al\u0131\u015fma \u00e7ok say\u0131da kayda ve bir\u00e7ok \u00f6rne\u011fe sahip. Bu nedenle olduk\u00e7a g\u00fc\u00e7l\u00fc bir \u00e7al\u0131\u015fma olarak kar\u015f\u0131m\u0131zda” diyor. Ara\u015ft\u0131rmac\u0131lar, fosil kay\u0131tlar\u0131n\u0131 inceleyerek o d\u00f6nemin ekosistemi hakk\u0131nda daha fazla bilgi edinebilece\u011fimizi kaydetmekte.<\/p>\n
Kaynak:<\/strong> https:\/\/cosmosmagazine.com\/palaeontology\/how-mammals-inherited-the-earth<\/p>\n","protected":false},"excerpt":{"rendered":" 66 milyon y\u0131l \u00f6nce, Malta b\u00fcy\u00fckl\u00fc\u011f\u00fcnde bir asteroit Meksika’da bulunan Yucat\u00e1n Yar\u0131madas\u0131’na \u00e7arpt\u0131. Bu durum D\u00fcnya \u00fczerinde felaket etkisi yaratt\u0131 ve gezegen \u00fczerinde bulunan t\u00fcrlerin d\u00f6rtte \u00fc\u00e7\u00fcnden fazlas\u0131 yok oldu. Science dergisinde yay\u0131mlanan yeni ara\u015ft\u0131rma, bu canl\u0131lar\u0131n yok olu\u015flar\u0131n\u0131n ard\u0131ndan g\u00f6zlenen ya\u015fam\u0131n tarihine odakland\u0131. Denver Tarih ve Bilim M\u00fczesi’nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten Ian Miller, “D\u00fcnya tarihini […]<\/p>\n","protected":false},"author":1390,"featured_media":38241,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[1094,2917,3043,506,776,449],"class_list":["post-38240","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-asteroit","tag-bitkiler","tag-dinozor","tag-ekosistem","tag-hayvanlar","tag-memeliler"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t