Macrophotograph of the structural detail in a piece of fossilized wood from Sweet Home, Oregon Image #3918BW 6115 X 4080 pixels
Jasper replaced petrified bogwood from Oregon; also known as Gary Green jasper; Image #3981 4800 X 3200 pixels
Macrophotograph of petrified tree fern wood of the Osmunda genus; from the Jurassic period; from Queensland, Australia Image #2856 4800 X 3200 pixels
