Paleogene is a geologic system that spans 48 million years.
The Paleogene -LRB- -LSB- pronplidin -RSB- or -LSB- pelidin -RSB- also spelled Palaeogene or Palogene ; 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 .	also spelled	British English	geologic period and system	geologic period	Cretaceous	Cretaceous	Mya	annum	Neogene	Neogene	Tertiary	Tertiary
