Macro photograph of a cross-sectioned dinosaur bone showing the interior cellular structure (unidentified Sauropod from the late Jurrasic period (150 million yrs ago)); Colorado Image #3334 4800 X 3200 pixels
Polished rock containing ammonite fossils in various degrees of fragmentation; also known as Marston Magna Marble; approx. 200 million yrs old (Lower Jurassic) mined in Somerset, England Image #3365 3098 X 4766 pixels
Macrophotograph of the fossilized remains of Turitella sea snails Image #3751 4800 X 3101 pixels
