| 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]);
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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]);
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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);
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| 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.
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