* Astronomy

Tiny fossil teeth re-write rodent record

The oldest rodent fossils yet found in South America have been unearthed along the Ucayali River near Contamana, Peru.
The specimens comprise the tiny teeth of mouse-sized and rat-sized animals that lived at least 41 million years ago.
This makes the fossils some 10 million years older than all previous rodent discoveries made on the continent.
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