Of, relating to, or being the most recent era of geologic time, from about 65 million years ago to the present. The Cenozoic Era includes the Tertiary Period and the Quaternary Period and is characterized by the formation of modern continents, glaciation, and the diversification of mammals, birds, and plants.
The Cenozoic Era.
Designating or of the third geologic era of the Phanerozoic Eon, formerly subdivided into the Tertiary and Quaternary periods and now subdivided into the Paleogene, Neogene, and Quaternary periods, characterized by the development of birds and mammals.
The most recent era of geologic time, from about 65 million years ago to the present. The Cenozoic Era is characterized by the formation of modern continents and the diversification of mammals and plants. Grasses also evolved during the Cenozoic. The climate was warm and tropical toward the beginning of the era and cooled significantly in the second half, leading to several ice ages. Humans first appeared near the end of this era.
- the Cenozoic Era or its rocks
Idioms and Phrasal Verbs
Origin of cenozoic
- Greek kainos new ken- in Indo-European roots –zoic
From American Heritage Dictionary of the English Language, 5th Edition
- ceno- + -zoic; from Ancient Greek καινός (kainós, “new”) + ζωή (zōē, “life”)