It was a designation in geology to the period between makes 66 millions of years ( massive disappearance of dinosaurs ) until recently some 2.5 million when he started the Quaternary. It was also called tertiary or was Cenozoic ( It means new life ) or mammals. Currently is not accepted this terminology by the International Commission of stratigraphy.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list
