The palaeontology collection at the Smithsonian’s National Museum of Natural History chip clark/museum of natural history
WHAT is a fossil made of? Mineralised rocky fossils are what first spring to mind, but others, like the fossils of the Burgess Shale in Canada, are made of pure carbon and can be thought of as proto-coal. There are also tantalising Cretaceous insects preserved in amber.
Whatever they are made of, fossils contain treasures. The first really good microscopic study of mineralised dinosaur bone was able to reveal its …
