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.

Though recent research indicates that the diversity of Mesozoic mammals was greater than once thought, most mammal fossils from the beginning of the Cenozoic (Paleogene Period) were small herbivores. By mid-Paleocene, the ungulates—hoofed mammals of initially five-toed forms—became abundant.

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 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.

2014年4月29日 · 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.

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 Paleogene Period in the modern Cenozoic Era.

Paleogene Period, oldest of the three stratigraphic divisions of the Cenozoic Era spanning the interval between 66 million and 23 million years ago.

2018年6月11日 · 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.

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.

Palaeocene The earliest geological epoch of the Tertiary period. It began about 65 million years ago, following the Cretaceous period, and extended for about 11.1 million years to the beginning of the Eocene (the Palaeocene is sometimes included in the Eocene). It was named by the palaeobotanist W. P. Schimper in 1874.