Macrophotograph of the structural detail in a piece of fossilized wood (Araucarioxylon arizonicum) from Arizona; late Triassic (approx. 225 million years) in age; the state fossil of Arizona; an extinct conifer Image #4070 6144 X 3962 pixels
Macro photograph of the zig-zag joining of the two halves of a fossilized oyster shell (Alectryon carinata) from Madagascar; this species existed during the Cretaceous period Image #2994 6144 X 4912 pixels
Fossilized section of Callixylon trifilievii, the oldest known true wood. Upper Devonian-Frasnian Stage (approx 380 million years ago). From the St. Petersburg Region, Russia. Image #3749 4800 X 3200 pixels
