The Arshantan age is a period of geologic time (48.6—37.2 Ma) within the Early Eocene epoch of the Paleogene used more specifically with Asian Land Mammal Ages. It follows the Bumbanian age and precedes the Irdinmanhan age. The upper boundary layer of the Arshantan can be the lower boundary of the Priabonian Image:Geological time spiral.png This Geochronology-related article is a stub. You can help Fossil Wiki by [ expanding it].