{"id":34151,"date":"2018-10-30T16:06:21","date_gmt":"2018-10-30T10:36:21","guid":{"rendered":"https:\/\/blog.forumias.com\/?p=34151"},"modified":"2018-10-30T16:06:21","modified_gmt":"2018-10-30T10:36:21","slug":"mammals-gave-up-night-life-only-after-dinosaur-doom","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/mammals-gave-up-night-life-only-after-dinosaur-doom\/","title":{"rendered":"Mammals gave up night life only after dinosaur doom:"},"content":{"rendered":"<p><a href=\"https:\/\/www.google.co.in\/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=1&amp;cad=rja&amp;uact=8&amp;ved=0ahUKEwjxncaSxqvXAhXDtI8KHXIGAlIQqOcBCCUwAA&amp;url=http%3A%2F%2Fwww.thehindu.com%2Fsci-tech%2Fscience%2Fmammals-gave-up-night-life-only-after-dinosaur-doom%2Farticle19993683.ece&amp;usg=AOvVaw2F-GXrZwA6N0DoRvlg3ZgV\"><span style=\"font-weight: 400;\">Mammals gave up night life only after dinosaur doom<\/span><\/a><span style=\"font-weight: 400;\">:<\/span><\/p>\n<p><b>Context:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Research says that earliest mammals were night creatures.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">They emerged from darkness only after the demise of the daytime dinosaurs.<\/span><\/li>\n<\/ul>\n<p><b>What is the explanation behind the research? <\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The earliest mammal ancestor emerged between 220 million and 160 million years ago, evolving from a reptilian forebear.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">And according to studies, it was probably nocturnal.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Dinosaurs, on the other hand, were likely day-dwellers seeking out sunlight to warm their bodies like reptiles today.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The mammals hid out in darkness for so long, possibly to avoid competition with dinosaurs for food or territory, or being eaten by them.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">The data revealed that mammals remained nocturnal throughout the Mesozoic period, which ended about 66 million years ago when a massive calamity, possibly an asteroid strike, wiped out the dinosaurs and about three-quarters of life on Earth.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Mammals, then mainly small, scurrying animals, survived, and flourished.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Primate ancestors were thus <\/span><b>among the first mammals to become strictly diurnal, possibly as long as 52 million years ago<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p><b>Mammals in the present day context:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Mammals, apart from primates, <\/span><b>lack a part of the eye known as the fovea, <\/b><span style=\"font-weight: 400;\">which many fish, reptiles and birds have and is replete with photoreceptor \u201ccone\u201d cells for seeing colour in high light.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Instead, they tend to have more \u201crod\u201d cells, which can pick up scant light in dim conditions, but provide relatively low resolution.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Modern-day mammals, which are active mostly by day including types of squirrel, tree-shrews, some antelope and many carnivores \u00a0also <\/span><b>still tend to have a keen sense of smell and acute hearing, attributes required for living in the dark<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Mammals gave up night life only after dinosaur doom: Context: Research says that earliest mammals were night creatures. They emerged from darkness only after the demise of the daytime dinosaurs. What is the explanation behind the research? The earliest mammal ancestor emerged between 220 million and 160 million years ago, evolving from a reptilian forebear.&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/mammals-gave-up-night-life-only-after-dinosaur-doom\/\">Continue reading <span class=\"screen-reader-text\">Mammals gave up night life only after dinosaur doom:<\/span><\/a><\/p>\n","protected":false},"author":61,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[555],"tags":[],"class_list":["post-34151","post","type-post","status-publish","format-standard","hentry","category-test-1","entry"],"jetpack_featured_media_url":"","views":{"total":0,"cached_at":"","cached_date":1704576898},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/34151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/61"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=34151"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/34151\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=34151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=34151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=34151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}