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 Imge #3366
Macrophotograph of petrified wood....sycamore from Washington State Image #3959
Macrophotograph of the structural detail in a piece of fossilized wood from Sweet Home, Oregon Image #3918
