kainozoic

from The Collaborative International Dictionary of English v.0.48

Cenozoic \Ce`no*zo"ic\, a. [Gr. ? recent + ? life.] (Geol.)
   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 {c[ae]nozoic},
   {cainozoic}, {kainozoic}.] See {Geology}.
   [1913 Webster]

   Note: This word is used by many authors as synonymous with
         Tertiary, the Quaternary Age not being included.
         [1913 Webster]