The period began with the extinction of the non- avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start of the Cenozoic Era, and extended to the beginning of the Quaternary …

The Tertiary Period saw huge alterations in Earth’s systems and the development of the ecological and climatic conditions that characterize the modern world.

Tertiary Period was the name given on the geologic time scale to the first stage of the Cenozoic Era, formerly known as the Tertiary Era, which began 66 million years ago and extends to the present day.

May 18, 2018 · In geologic time , the Tertiary Period (also sometimes referred to in terms of a Paleogene Period and a Neogene Period), represents the first geologic period in the Cenozoic Era . …

The Tertiary is an obsolete geologic period spanning 66 million to 2.6 or 1.8 million years ago. The period began with the extinction of the non-avian dinosaurs...

The Tertiary Period is a geological period that lasted from approximately 66 to 2.6 million years ago. It marks the beginning of the Cenozoic Era, immediately following the mass extinction event that wiped …

Tertiary (from Latin, meaning 'third' or 'of the third degree/order..') may refer to: Tertiary period, an obsolete geologic period spanning from 66 to 2.6 million years ago

In common usage, the Tertiary has included five geologic epochs—the Paleocene, Eocene, Oligocene, Miocene, and Pliocene. The Tertiary covers roughly the time span between the demise of the …

Jun 20, 2025 · Uncover the significance of the Tertiary Period in Earth's history with this in-depth exploration. Discover how it shaped landscapes, climate change, and the rise of mammals, featuring …

Nov 17, 2010 · But when it comes to us mammals, perhaps the most important period was the one known as the Tertiary Period. This period began 65 million years ago and ended roughly 1.8 million …