Explore: Oligocene Geologic Epoch

The Oligocene is a geologic epoch of the Paleogene Period that extends from about 33.9 million to 23 million years before the present (33.9±0.1 to 23

the Anthropocene Series/Epoch. Nevertheless, the definition of the Anthropocene as a geologic time period rather than a geologic event remains controversial

appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene

Carboniferous or Early Carboniferous, is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earlier of two subperiods of the

The Rupelian, in the geologic timescale, the older of two ages or the lower of two stages of the Oligocene Epoch/Series. It spans the time between 33

marked by the Eocene–Oligocene extinction event, the European face of which is known as the Grande Coupure. The Oligocene Epoch spans from 33.9 million

The geological history of Earth follows the major geological events in Earth's past based on the geologic time scale, a system of chronological measurement

Pleiocene) is the epoch in the geologic time scale that extends from 5.33 to 2.58 million years ago (Ma). It is the second and most recent epoch of the Neogene

The Chattian is, in the geologic timescale, the younger of two ages or upper of two stages of the Oligocene Epoch/Series. It spans the time between 27

the preceding Oligocene and following Pliocene Epochs: Continents continued to drift toward their present positions. Of the modern geologic features, only