The Paleocene (IPA: / ˈpæli.əsiːn, - i.oʊ -, ˈpeɪli -/ PAL-ee-ə-seen, -⁠ee-oh-, PAY-lee-), [4] or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era.

Paleocene Epoch, first major worldwide division of rocks and time of the Paleogene Period, spanning the interval between 66 million and 56 million years ago. The Paleocene Epoch was preceded by the Cretaceous Period and was followed by the Eocene Epoch.

Mammals became more diverse during the Paleocene and many evolved larger body size, adopting ecological roles similar to the now-extinct dinosaurs. These early mammals are only distantly related to living species and they retained very primitive teeth and skeletons.

Apr 27, 2023 · The initial epoch of the Paleogene Period and the Cenozoic Era is the Paleocene Epoch, which marks the first subdivision of geologic time after the extinction of the dinosaurs and the end of the Cretaceous Period.

The Paleocene is a geologic epoch that lasted from 65.5 ± 0.3 million years ago (mya) to 55.8 ± 0.2 mya. It is the first epoch of the Paleogene period in the modern Cenozoic era, and is followed by the Eocene.

Apr 29, 2014 · The Paleocene or Palaeocene, the “old recent”, is a geologic epoch that lasted from about 66 to 56 million years ago. It is the first epoch of the Palaeogene Period in the modern Cenozoic Era. As with many geologic periods, the strata that define the epoch’s beginning and end are well identified, but the exact ages remain uncertain.

Feb 21, 2025 · Paleogene Period, oldest of the three stratigraphic divisions of the Cenozoic Era spanning the interval between 66 million and 23 million years ago. Paleogene is Greek meaning “ancient-born” and includes the Paleocene (Palaeocene) Epoch (66 million to 56 million years ago), the Eocene Epoch (56

Jun 11, 2018 · The Paleocene Epoch is the earliest epoch in the Tertiary Period (in the alternative, the earliest epoch in the Paleogene Period). The Paleocene Epoch spans the time between roughly 65 million years ago (mya) and 55 mya.

May 3, 2017 · The Paleocene epoch encompassed the 10 million years after the dinosaurs went extinct. Here's an overview of prehistoric life during the Paleocene epoch, including mammals, birds and sharks.

The Palaeocene is the first geological epoch in the Palaeogene. It was from 66 to 56 million years ago. It started after the end of the Cretaceous, and it was followed by the Eocene epoch. The word "Palaeocene" may be spelled "Paleocene" quite correctly. It is just an alternative spelling.