Stitched macro 'panoramic' of an ammonite fossil. An extinct marine invertebrate found in Madagascar; existed during the Middle Cretaceous period approx. 110 million years ago. Image #3160
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, USA Image #3334
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
