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Originally Posted by RickyMaveety
Yeah, but rocks made of the poop of huge animals?? I mean .... I know dogs can be into that sort of thing .... but eeeeew!!
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Easy Rickey, There's nothing left but the shape. Very few fossils consist of the original material, they've been replaced by other minerals. I have a beatiful fossil snail shell from Waller Creek on the UT campus, totally replaced by iron pyrite.