Cenozoic
/ˌsiːnəˈzəʊɪk/(亦作Cainozoic)
adjective
1- Geology of, relating to, or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods【地质】（与）新生代（有关）的（在中生代之后, 包括第三纪和第四纪的）。
1.1
- as noun the Cenozoic the Cenozoic era, or the system of rocks deposited during it新生代时期, 新生代岩层。
The Cenozoic has lasted from about 65 million years ago to the present day. It has seen the rapid evolution and rise to dominance of mammals, birds, and flowering plants.
词源
mid 19th cent.: from Greek kainos 'new'+ zōion 'animal'+-IC.