Gashatan
Encyclopedia
The Gashatan is an Asian Land Mammal Age, a large biozone
which corresponds to ages between 58.7—55.8 Ma for finds of fossil mammal
s in Asia
. This zone lies within the Thanetian
stage of the Paleocene
series
. It precedes the Bumbanian
.
Biozone
Biostratigraphic units or Biozones are intervals of geological strata that are defined on the basis of their characteristic fossil taxa....
which corresponds to ages between 58.7—55.8 Ma for finds of fossil mammal
Mammal
Mammals are members of a class of air-breathing vertebrate animals characterised by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young...
s in Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...
. This zone lies within the Thanetian
Thanetian
The Thanetian is, in the ICS' Geologic timescale, the latest age or uppermost stratigraphic stage of the Paleocene Epoch or series. It spans the time between and . The Thanetian is preceded by the Selandian age and followed by the Ypresian age...
stage of the Paleocene
Paleocene
The Paleocene or Palaeocene, the "early recent", is a geologic epoch that lasted from about . It is the first epoch of the Palaeogene Period in the modern Cenozoic Era...
series
Series (stratigraphy)
Series are subdivisions of rock layers made based on the age of the rock and corresponding to the dating system unit called an epoch, both being formally defined international conventions of the geological timescale. A series is therefore a sequence of rock depositions defining a...
. It precedes the Bumbanian
Bumbanian
The Bumbanian is an Asian Land Mammal Age , a large biozone which corresponds to ages between 55.8—46.8 Ma for finds of fossil mammals in Asia. This zone lies within the Ypresian stage of the Eocene series. It follows the Gashatan ALMA and precedes the Arshantan ALMA....
.