/ peɪliəsin /
Prevedi Paleocene na: francuski
Earliest epoch of Tertiary period. First epoch of the Tertiary period of geological time, 65–55 million years ago. Many types of mammals spread rapidly after the disappearance of the great reptiles of the Mesozoic.From 58 million to 63 million years ago; appearance of birds and earliest mammals; Also called: Paleocene epoch.