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   H. Pettijohn (punkpaleo@sauropods.win)'s status on Friday, 31-May-2024 23:42:00 JST H. Pettijohn

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   This fossil is housed at the Natural History Museum of Utah in Salt Lake City, Utah. I posted this fella last year, but it's such a neat fossil that it deserves a repost! (2/2)

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     H. Pettijohn (punkpaleo@sauropods.win)'s status on Friday, 31-May-2024 23:42:01 JST H. Pettijohn

     Happy #FossilFriday, check out this Allosaurus fossil with amethyst growing at its center! It's likely water rich with silica and a touch of iron leeched into the bone during the fossilization process, allowing the growth of crystals over time. (1/2)
     #paleontology #geology #dinosaur #allosaurus #science

     Bill repeated this.