The Miocene (/ ˈmaɪ.əsiːn, - oʊ -/ MY-ə-seen, -⁠oh-) [6][7] is the first geological epoch of the Neogene Period and extends from about 23.03 to 5.333 million years ago (Ma).

Feb 21, 2025 · Miocene Epoch, earliest major worldwide division of the Neogene Period (23 million to 2.6 million years ago) that extended from 23 million to 5.3 million years ago, a time when land-dwelling mammals were essentially modern.

The Miocene Epoch, 23.03 to 5.3 million years ago,* was a time of warmer global climates than those in the preceeding Oligocene or the following Pliocene and it's notable in that two major ecosystems made their first appearances: kelp forests and grasslands.

The Miocene begins with a gradual, short-lived warming, and some tropical forests expand. Drying accompanies this temperature change, and tough scrub plants evolve as a new form of vegetation.

May 5, 2014 · The Miocene is the first geological epoch of the Neogene period and extends from about 23.03 to 5.332 million years ago (Ma). The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words μείων (meiōn, “less”) and καινός (kainos, “new”) and means “less recent” because it has 18% fewer modern sea invertebrates than the Pliocene.

The Miocene is a geologic time period lasting over 17 million years, characterized by the transition from a greenhouse to an icehouse world. It was marked by global cooling, tectonic activities, stabilization of Antarctic ice sheets, development of Northern Hemisphere ice sheets, intensification of monsoon systems, and expansion of grasslands.

Miocene Epoch, Major division of the Neogene Period, from 23 million to 5.3 million years ago. The extensive fossil record of terrestrial life during the Miocene provides a fairly complete picture of the development of vertebrates, especially mammals.

The Miocene is the last and final epoch of the first Neogene period and the fourth of the Cainozoic. It started about 23 million years ago and ended about 5.33 million years ago. The rock beds that mark the start and end are well known, but the exact dates of the start and end of the period are uncertain. The Miocene was named by Charles Lyell.

The Miocene epoch is a major division of the geologic timescale and the first epoch of the Neogene period of the Cenozoic era (or the fourth epoch of the Tertiary sub-era). The Miocene follows the Oligocene epoch and is followed by the Pliocene epoch. The Miocene extends from about 23.03 to 5.332 million years before the present.

Dec 23, 2020 · Here, we review the state-of-the-art in Miocene climate, ocean circulation, biogeochemical cycling, ice sheet dynamics, and biotic adaptation research as inferred through proxy observations and modeling studies.