Macrophotograph of the structural detail in a piece of fossilized wood (Araucarioxylon arizonicum) from the Chinle Formation in Arizona; late Triassic (approx. 225 million years) in age; the state fossil of Arizona; an extinct conifer Image #4082
Macrophotograph showing the structural detail in a whale bone fossil from Oregon Image #4045 6144 X 4080 pixels
Cut and polished interior surface of a piece of fossilized wood (Schinolylon sp.) from the Green River Formation in Eden Valley, Wyoming; Eocene (50 million years) in age. Image #4450
