Macro photograph showing the internal structure of a cross-sectioned piece of fossilized tree fern (Tietea singularis): Permian in age; from Tocantins State, Brazil Image #3163
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 #4001
Macrophotograph of the patterns and colors in a piece of petrified wood Image #3986
