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The middle of a polished slice of a petrified tree from Arizona. After enlarging the image, it is possible to see borings from insects who lived approximately 230 million years ago in the late Triassic.

This is the English translation of the Picture of the day description page from .

The middle of a polished slice of a petrified tree from Arizona. After enlarging the image, it is possible to see borings from insects who lived approximately 230 million years ago in the late Triassic.

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