Closeup of the structural detail in a piece of colorful petrified wood from Arizona; Araucarioxylon arizonicum from the Chinle...

Rainbow Petrified Wood 1

Arizona

Closeup of the structural detail in a piece of colorful petrified wood from Arizona; Araucarioxylon arizonicum from the Chinle Formation; Late Triassic in age ((roughly 225 million years); the state fossil of Arizona it is also known as Rainbow petrified wood

Image #4217

Photo © copyright by Mark Windom.

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