Mastodons migrated across extreme distances due to climate change, study says

By Ashley Strickland, CNN

Updated 11:21 AM ET, Tue September 1, 2020

This photo captures the Ewass Oldupa archeological site in the Oldupai Gorge, Tanzania. Stone tools that date back 2 million years ago were recently uncovered at the site.
Photos: Ancient finds
This photo captures the Ewass Oldupa archeological site in the Oldupai Gorge, Tanzania. Stone tools that date back 2 million years ago were recently uncovered at the site.
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This image shows the Cook House (right) and the Earthwatch roundhouse reconstructions (left) prior to their dismantling and excavation at the Castell Henllys Iron Age site in Wales.
Photos: Ancient finds
This image shows the Cook House (right) and the Earthwatch roundhouse reconstructions (left) prior to their dismantling and excavation at the Castell Henllys Iron Age site in Wales.
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This is an artist's illustration of Adalatherium hui, an early mammal that lived on Madagascar 66 million years ago.
Photos: Ancient finds
This is an artist's illustration of Adalatherium hui, an early mammal that lived on Madagascar 66 million years ago.
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This artist's illustration shows Triceratops and juvenile tyrannosaurs facing off near the end of the Cretaceous Period 67 million years ago.
Photos: Ancient finds
This artist's illustration shows Triceratops and juvenile tyrannosaurs facing off near the end of the Cretaceous Period 67 million years ago.
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This mastodon fossil is on display at the American Museum of Natural History. A new study using mastodon DNA has suggested the animals migrated many times across North America during fluctuations in climate and environment.
Photos: Ancient finds
This mastodon fossil is on display at the American Museum of Natural History. A new study using mastodon DNA has suggested the animals migrated many times across North America during fluctuations in climate and environment.
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A titanosaurian sauropod hatchling was found inside a dinosaur egg from 80 million years ago and its embryonic skull was still preserved.
Photos: Ancient finds
A titanosaurian sauropod hatchling was found inside a dinosaur egg from 80 million years ago and its embryonic skull was still preserved.
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This artist's illustration shows a young Purussaurus attacking a ground sloth in Amazonia 13 million years ago.
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