Masana kimiyya daga kasar Kanada sun gano a cikin Arctic Arctic wata halittar fuka-fukai wacce ta rayu a duniya kimanin shekaru miliyan casa'in da suka wuce. Godiya ga wannan binciken, masanan burbushin halittu sun sami fahimtar yadda yanayin Arctic yake a wancan zamani mai nisa.
Tsuntsun da mutanen Kanada suka gano shine Tingmaitornis arctica. A cewar masana tarihin burbushin halittu, tana da hakora kuma tana farautar manyan kifaye masu farauta. Sun kuma ce tsuntsayen kakannin kifin ne na zamani kuma wataƙila ma sun nitse don neman abinci a ƙarƙashin ruwa.
Abin sha'awa, wannan binciken ya haifar da yanke shawara mai ban mamaki. Idan aka yi la’akari da ragowar, shekaru miliyan 90 da suka gabata, yanayin Arctic ba shi da alaƙa da zamani kuma ya fi kama da yanayin Florida ta yanzu.
Ragowar sun bai wa masana kimiyya damar samar da wasu dabaru game da irin canjin yanayi da ya faru a yankin Arctic a cikin Upper Cretaceous. Misali, masana kimiyya na farko, duk da cewa sun san cewa yanayin Arctic na wancan lokacin ya fi na yanzu zafi, sun yi tunanin cewa a lokacin sanyi har ila yau Arctic yana rufe da kankara.
Binciken da ake yi yanzu yana nuna cewa ya fi ɗumi zafi a can, tunda dabbobin da irin wannan tsuntsayen za su iya ciyarwa suna iya kasancewa a cikin yanayi mai ɗumi kawai. Sakamakon haka, iskar arctic ta waccan lokacin na iya dumama zuwa digiri 28 a ma'aunin Celsius.
Bugu da kari, masana binciken burbushin halittu sun gano kwanyar dabbar da har yanzu ba a san ta ba, wacce ta huta a Kalifoniya. Wanda kwanyar ta kasance ba a bayyana ba tukunna, amma ra'ayoyi sun bayyana cewa babbar dabba ce da ta rayu a kalla shekaru dubu 30 da suka gabata. Haka kuma, mutuwar dabbar tana da alaƙa da sanyaya a duniya. Idan zato ya tabbata kuma da gaske ya zama babban abu, to zai kasance mafi dadadden burbushin sa a duk yankin Arewacin Amurka.
