An extinct marine invertebrate found in Madagascar; Cleoniceras cleon existed during the Middle Cretaceous period approx. 110 million years ago Image #2319BW 3164 X 4773 pixels
Macrophotograph of a cross-sectioned fossilized tree limb Image #3586 4800 X 3200 pixels
Macrophotograph of petrified tree fern wood of the Osmunda genus; from the Jurassic period; found in Queensland, Australia Image #2329 3200 X 4723 pixels
