Definitions for "Cenozoic"
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 cænozoic, cainozoic, kainozoic.] See Geology.
The “Age of Mammals”. This geologic era is the most recent.
1. the most recent geologic era, extending from the beginning of the Tertiary period (about 65 million years ago) to the present. 2. referring to the rock formed during that time (Morris 1992).
Keywords:  floor, living, specialized
Living Floor Specialized