The Eocene (IPA: /ˈiːəsiːn, ˈiːoʊ-/ EE-ə-seen, EE-oh-) is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second...

The Paleocene–Eocene thermal maximum (PETM), alternatively ”Eocene thermal maximum 1 (ETM1)“ and formerly known as the "Initial Eocene" or “Late Paleocene...

years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Eocene–Oligocene extinction event, also called the Eocene-Oligocene transition (EOT) or Grande Coupure (French...

considerable changes in climate from the Paleocene–Eocene Thermal Maximum, through global cooling during the Eocene to the first appearance of permanent ice sheets...

of the Eocene. It spans the time between 56 and 47.8 Ma, is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian...

warmer than today, particularly during the Paleocene–Eocene Thermal Maximum. However, the Eocene to Oligocene transition and the Quaternary glaciation...

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...

The Early Eocene Climatic Optimum (EECO), also referred to as the Early Eocene Thermal Maximum (EETM), was a period of extremely warm greenhouse climatic...

America and Asia, died out at the beginning of the Upper Eocene. Equoidea also developed in the Eocene. Palaeotheriidae are known mainly from Europe. In contrast...

The Middle Eocene Climatic Optimum (MECO), also called the Middle Eocene Thermal Maximum (METM), was a period of very warm climate that occurred during...

The paleofauna of the Eocene Okanagan Highlands consists of Early Eocene arthropods, vertebrates, plus rare nematodes and molluscs found in geological...

palaiós meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two...

Eocene Thermal Maximum 2 (ETM-2), also called H-1 or Elmo (Eocene Layer of Mysterious Origin), was a transient period of global warming that occurred...

inherit (the reduction of digit I and V for example). By the start of the Eocene, 55 million years ago (Mya), they had diversified and spread out to occupy...

(Early Eocene of Wyoming, U.S.) Palaeoglaux (Middle-Late Eocene of West-Central Europe) own family Palaeoglaucidae or Strigidae? Palaeobyas (Late Eocene/Early...

Eocene Peak is a granitic summit with an elevation of 11,569 feet (3,526 m) located on the crest of the Sierra Nevada mountain range, in northern California...

families are known, spanning across the Northern Hemisphere, from the Early Eocene to the early Pliocene, including a variety of flightless forms like the...

ruler", is an extinct genus of artiodactyl that lived during the Middle Eocene in China. It contains two species, A. mongoliensis and A. crassum. The genus...

procellariiforms as early as the Eocene. A study on the internal structure and resistance to bending forces of tarsometatarsi of extant and Eocene penguins is published...

(Cretaceous-Eocene; Canada, China, Denmark) †Adamsochrysa Makarkin & Archibald, 2013 (Eocene; Canada, United States) †Archaeochrysa (Eocene - Oligocene)...

diverse assemblage of cartilaginous fish fossils is described from the Eocene Osinovaya Formation (Rostov Oblast, Russia) by Popov et al. (2024). A study...

Two immature specimens of polyxenidan millipedes are described from the Eocene Bitterfeld amber (Germany) by Haug et al. (2018). First known millipede...

collardii Axelrod, North America (Idaho), Eocene Malus kingiensis Budants, Kamchatka Peninsula, Russia, Eocene Malus florissantensis (Cockerell) MacGinitie...

Boles, Walter E. (1997). "Fossil songbirds (Passeriformes) from the Early Eocene of Australia". Emu. 97 (1): 43–50. Bibcode:1997EmuAO..97...43B. doi:10.1071/MU97004...

The Eocene Okanagan Highlands or Eocene Okanogan Highlands are a series of Early Eocene geological formations which span a 1,000 km (620 mi) transect...

Cretaceous through the Eocene, making its last appearance in the fossil record of North and South America in the late Eocene. Assuming the habitat of...

Engrauloidea Genus †Clupeopsis (fossil; Early Eocene of Belgium) Genus †Monosmilus (fossil; Middle Eocene of Pakistan) Family Engraulidae Subfamily Coiliinae...

years ago. Suina (including pigs) have been around since the Eocene. In the late Eocene or the Oligocene, two families stayed in Eurasia and Africa; the...

definitive salmonids appear before the Eocene. The Salmonidae first appear in the fossil record in the Early Eocene with Eosalmo driftwoodensis, a stem-salmonine...

Middle Eocene to the Late Pleistocene around 43 to 0.1 million years ago, though some specimens suggest that they were present since the Early Eocene. They...