An extinct marine invertebrate found in Madagascar; existed during the Middle Cretaceous period approx. 110 million years ago. Image #1898 4800 X 3200 pixels
Macro photograph of the patterns in a piece of petrified wood from Saddle Mountain, Washington State Image #3454 4080 X 6144 pixels
Macro photograph of the patterns in a piece of fossilized wood Image #3411 2915 X 4489 pixels
