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Home > All Images > 1991 > February > 21 Feb 1991

Images Dated 21st February 1991

Choose from 10 pictures in our Images Dated 21st February 1991 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Artists impression of Tertiary period landscape Featured 21 Feb 1991 Print

Artists impression of Tertiary period landscape

Artist's impression of a Tertiary period landscape. This period extended from 65 to about 2 million years ago and is divided into five epochs: the Paleocene, Eocene, Oligocene, Miocene and Pliocene. Dinosaurs died out early on in the Tertiary and mammals progressed rapidly. Anthropoid apes appeared, and towards the end the present forms of the continents developed. There was considerable volcanic activity, and it is thought that the Himalayas (amongst other mountain ranges) originate from the Miocene epoch. Temperatures dropped signalling the beginning of the ice-ages at the end of the Pliocene

© LUDEK PESEK/SCIENCE PHOTO LIBRARY