Eocene - Wikipedia
The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-[5] [6]) is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.The name Eocene comes from the Ancient Greek Ἠώς (Ēṓs, "Dawn") and καινός (kainós, "new") and refers to the "dawn" of modern ('new') fauna that ...
Eocene Epoch | Climate, Flora & Fauna | Britannica
2024年9月21日 · Eocene Epoch, second of three major worldwide divisions of the Paleogene Period (66 million to 23 million years ago) that began 56 million years ago and ended 33.9 million years ago. It follows the Paleocene Epoch and precedes the Oligocene Epoch. The Eocene is often divided into Early (56 million.
Eocene Epoch - Geology Page
2014年4月29日 · The Eocene epoch, lasting from 56 to 33.9 million years ago, is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch.
Prehistoric Life During the Eocene Epoch - ThoughtCo
2019年8月16日 · The Eocene constitutes the middle part of the Paleogene period (65-23 million years ago), preceded by the Paleocene, and succeeded by the Oligocene epoch (34-23 million years ago); all of these periods and epochs were part of the Cenozoic Era (65 million years ago to …
Geologic time scale - Wikipedia
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks).
University of California Museum of Paleontology
University of California Museum of Paleontology
Eocene - New World Encyclopedia
The Eocene spans the time from the end of the Paleocene epoch to the beginning of the Oligocene epoch. The start of the Eocene is marked by the emergence of the first modern mammals. Within a geologically brief period of time in the early Eocene, most of the modern mammal orders appeared.
Eocene Epoch in Geological Time Scale in Archaeology
2023年8月6日 · The Eocene Epoch, one of the most intriguing periods in Earth’s history, spans from around 56 to 33.9 million years ago, following the Paleocene Epoch and preceding the Oligocene Epoch [1]. It was a crucial time of biological, climatic, and geographical transformations.
The Eocene Epoch (56-34 Million Years Ago) - Paleontology World
The Eocene epoch was when the first prehistoric whales left dry land and opted for a life in the sea, a trend that culminated in the middle Eocene Basilosaurus, which attained lengths of up to 60 feet and weighed in the neighborhood of 50 to 75 tons.
Early Eocene Epoch | geochronology | Britannica
The Cenozoic Era is generally divided into three periods: the Paleogene (66 million to 23 million years ago), the Neogene (23 million to 2.6 million years ago), and the Quaternary (2.6 million years ago to the present); however, the era has been traditionally divided into the Tertiary and Quaternary periods.