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The Paleocene (IPA: / ˈ p æ l i. ə s iː n,-i. oʊ-, ˈ p eɪ l i-/ PAL-ee-ə-seen, -ee-oh-, PAY-lee-), 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.
- Palaeocene
- Global (ICS)
- 1978
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. The Paleocene is subdivided into three ages.
- The Editors of Encyclopaedia Britannica
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.
- The Editors of Encyclopaedia Britannica
Apr 27, 2023 · On This Page. Paleogene Time Span. Date range: 66.0 million years ago–23.0 million years ago. Length: 43.0 million years (0.95% of geologic time) Geologic calendar: December 26 (6 PM)–December 30 (4 AM) (3 days, 10 hours) Oligocene age fossil oreodont skull, Badlands National Park, South Dakota. NPS image.
- Terrestrial Life During The Paleocene Epoch
- Marine Life During The Paleocene Epoch
- Plant Life During The Paleocene Epoch
Mammals. Contrary to popular belief, mammals didn't suddenly appear on the planet after the dinosaurs went extinct; small, mouselike mammals coexisted with dinosaurs as far back as the Triassic period (at least one mammalian genus, Cimexomys, actually straddled the Cretaceous/Paleocene boundary). The mammals of the Paleocene epoch weren't much larg...
Dinosaurs weren't the only reptiles that went extinct at the end of the Cretaceous period. Mosasaurs, the fierce, sleek marine predators, also disappeared from the world's oceans, along with the last straggling remnants of plesiosaurs and pliosaurs. Filling the niches vacated by these voracious reptilian predators were prehistoric sharks, which had...
A huge number of plants, both terrestrial and aquatic, were destroyed in the K/T Extinction, victims of the enduring lack of sunlight (not only did these plants succumb to darkness, but so did the herbivorous animals that fed on the plants and the carnivorous animals that fed on the herbivorous animals). The Paleocene epoch witnessed the very first...
- Bob Strauss
The Paleogene Period ( IPA: / ˈpeɪli.ədʒiːn, - li.oʊ -, ˈpæli -/ PAY-lee-ə-jeen, -lee-oh-, PAL-ee-; also spelled Palaeogene or Palæogene) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period 66 million years ago ( Mya) to the beginning of the Neogene Period 23.03 Mya.
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.
