Macro photograph of a split fossilized ammonite shell showing the internal mineralized chambers; an extinct marine invertebrate from Madagascar; age: Cretaceous-Albian stage (110 million years ago); #3260
Macro photograph of the patterns in a piece of petrified wood from Saddle Mountain, Washington State Image #3461
Macrophotograph of the structural detail in a piece of polished petrified palm from Indonesia; #3901
