GCMD Chronostratigraphic Units Types Keywords

OLIGOCENE

https://gcmd.earthdata.nasa.gov/kms/concept/5e89981e-0ef5-4aec-b118-54fdf197eb05

broader
https://gcmd.earthdata.nasa.gov/kms/concept/a77f665d-345c-49b0-9e9b-f9f78a1415cc original
narrower
5e89981e-0ef5-4aec-b118-54fdf197eb05 original
change note
2019-10-22 10:18:14.0 [tstevens] Insert Concept
add narrower relation (OLIGOCENE [5e89981e-0ef5-4aec-b118-54fdf197eb05,336067] - CHATTIAN [9388f3a4-18df-45f6-ba3d-7a78579f6a6d,369433]);
2019-10-22 10:18:40.0 [tstevens] Insert Concept
add narrower relation (OLIGOCENE [5e89981e-0ef5-4aec-b118-54fdf197eb05,336067] - RUPELIAN [bb81d8bd-f837-4893-b560-921c28359975,369437]);
2019-10-23 08:10:38.0 [tstevens]
insert Definition (id: null
text: The Oligocene Epoch, which is right in the middle of the Tertiary Period (and end of the Paleogene), lasted from about 33.9 to 23 million years ago. Although it lasted a "short" 11 million years, a number of major changes occurred during this time. These changes include the appearance of the first elephants with trunks, early horses, and the appearance of many grasses — plants that would produce extensive grasslands in the following epoch, the Miocene.
language code: en);
definition The Oligocene Epoch, which is right in the middle of the Tertiary Period (and end of the Paleogene), lasted from about 33.9 to 23 million years ago. Although it lasted a "short" 11 million years, a number of major changes occurred during this time. These changes include the appearance of the first elephants with trunks, early horses, and the appearance of many grasses — plants that would produce extensive grasslands in the following epoch, the Miocene.
narrower
https://gcmd.earthdata.nasa.gov/kms/concept/9388f3a4-18df-45f6-ba3d-7a78579f6a6d original
broader
5e89981e-0ef5-4aec-b118-54fdf197eb05 original
https://gcmd.earthdata.nasa.gov/kms/concept/bb81d8bd-f837-4893-b560-921c28359975 original
broader
5e89981e-0ef5-4aec-b118-54fdf197eb05 original
reference
text International Commission on Stratigraphy (http://www.stratigraphy.org/)
type
Resource
type
Resource original
Concept original
in scheme chronounits original