Cenozoic
Cenozoic , adjective
[Greek {not transcribed} recent + {not transcribed} life.]
(Geology) Belonging to the most recent division of geological time, including the tertiary, or Age of mammals, and the Quaternary, or Age of man. [Written also canozoic, cainozoic, kainozoic.] See Geology.
This word is used by many authors as synonymous with Tertiary, the Quaternary Age not being included.