Noun: Paleocene 'pey-lee-u,seen or 'pa-lee-u,seen
- The earliest epoch of the Tertiary period, from 66 to 56 million years ago, marked by the appearance of modern birds and earliest mammals
- Paleocene epoch, Palaeocene [Brit, Cdn]
Type of: epoch
Part of: Tertiary, Tertiary period
Encyclopedia: Paleocene