Page 51 - One Million Things: Animal Life - The Incredible Visual Guide

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AGO sloth were among the large mammals that lived during the past two million 10,000 years ago, because of climate change at the end of the last ice age, and because of hunting by people.

AGO Giant sloth YEARS The woolly mammoth and the giant years. All became extinct around

Dimetrodon’s sail was used to control body temperature YEARS 10,000

10,000 Thylacine
Woolly mammoth

Dodo

HISTORY

AGO RECENT

YEARS

MILLION

Allosaurus 150 MILLION YEARS AGO At this time the climate was warm and dinosaurs dominated life on Earth. They included ferocious, fast-moving carnivores, such as Allosaurus, as well as giant, lumbering plant-eaters. Flying reptiles, such as Pterodactylus, preyed on smaller animals. By 65 million years ago, both groups were extinct. In recent times human activity has accelerated the rate of extinction. The dodo was a flightless bird discovered on Mauritius in 1598. By

Allosaurus tore its prey apart using its sharp teeth 150 RECENT HISTORY

Pterodactylus 49 US_048_049_Ancient_Animals.indd 48 048_049_Ancient_Animals.indd 48

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