Search
Menu
Home
Sources
About
Contacts
Orellan
The
Orellan
North American
Stage
on the
geologic timescale
is
the North
American
faunal stage
according to the
North American Land Mammal Ages
chronology
, 32-34
million years ago
. It is usually considered to
fall
within the
Early Oligocene
. The Orellan precedes the
Whitneyan
and
follows
the
Chadronian
NALMA
stages
.
The Orellan is contained within the
Rupelian
and
shares
the
lower
boundary
.