Sea Urchin Fossil Collection
Fossil Sand Dollars: a species of flattened, burrowing sea urchins belonging to the order Clypeasteroida. Known also as see cookie, snapper biscuit, pansy shell. There are around 800 extant species and the group has a long and detailed fossil record stretching back about 450 million years ago to the Late Ordovician Period. Found in Madagascar, they can be used as healing tools.