Paleogene is a geologic system that spans 41 million years.
The Paleogene -LRB- -LSB- pronËˆpÃ¦liËÉ™dÊ’iËn -RSB- or -LSB- ËˆpeÉªliËÉ™dÊ’iËn -RSB- also spelled Palaeogene or PalÃ¦ogene ; informally Lower Tertiary -RRB- is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago -LRB- Mya -RRB- to the beginning of the Neogene Period Mya .
Paleogene
is a geologic system that spans
41 million years
43 million years