Zamanin Cenozoic zamani ne wanda ya fara kusan shekaru miliyan 66 da suka gabata kuma yana ci gaba har zuwa yau. Ana kuma kiransa da “Zamanin Mazabba” domin lokaci ne da dabbobi masu shayarwa suka fara mamaye halittun Duniya.Cenozoic Era ya kasu kashi uku: Zamanin Paleogene (66-23). shekaru miliyan da suka wuce), Zaman Neogene (shekaru miliyan 23-2.6 da suka wuce), da kuma Lokacin Quaternary (shekaru miliyan 2.6 da suka gabata don gabatarwa). An ƙara raba waɗannan lokuta zuwa zamani.A lokacin Cenozoic Era, Duniya ta sami sauye-sauye masu mahimmanci, ciki har da bullowar halittun zamani da kuma juyin halittar nau'ikan tsirrai da dabbobi da yawa. Har ila yau, lokaci ne na manyan abubuwan da suka faru a yanayin kasa, kamar samuwar Himalayas da bude Tekun Atlantika.