Oligocene
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The Oligocene is a geologic epoch of the Paleogene Period that extends from about 33.9 million to 23 million years before the present. As with other older geologic periods, the rock beds that define t
Subdivisions of the Oligocene
Neotethys during the Oligocene (Rupelian, 33.9–28.4 mya)
Restoration of Nimravus (far left) and other animals from the Turtle Cove Formation
Paraceratherium restored next to Hyaenodon
Miocene
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The Miocene is the first geological epoch of the Neogene Period and extends from about 23.04 to 5.333 million years ago. The Miocene was named by Scottish geologist Charles Lyell and comes from Ancien
Oligocene
…kainós), lit. 'new', and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link…
Subdivisions of the Miocene
The Mediterranean during the Late Miocene
Restoration of the volcanic eruption in Harney Basin, of the western US, represented by the Rattlesnake Formation
The dragon blood tree is considered a remnant of the Mio-Pliocene Laurasian subtropical forests that are now almost extinct in North Africa.