Pseudogygites Posted September 16, 2018 Share Posted September 16, 2018 Hi again! I’m totally stumped with this one. The rock is limestone, so its not the Billings formation. There is still some matrix on it, but most of the surface is exposed. It’s spherical and slightly faceted. Fossil pearl? Link to comment Share on other sites More sharing options...
KimTexan Posted September 16, 2018 Share Posted September 16, 2018 The matrix itself looks more like a hard shale to mudstone type material. The object appears to be phosphatized. Hard to tell what it is, but it looks a bit like a bivalve from the 2nd pic. This type of matrix generally will soften when put in acid, like a 3-5% vinegar. The phosphatic pieces usually hold up in the acid without being affected, provided you don’t leave it overnight or something. Here are examples from the North Sulpur River in Texas. The top 3 are a bit bunged up, but also have surplid worm tubes on them. They have all been placed in vinegar to remove hard clay. These are phosphatized gastropods. I assume the environment is marine. I’m not sure thatbit could be anything else with that type of sedimentary stone. 1 Link to comment Share on other sites More sharing options...
ynot Posted September 16, 2018 Share Posted September 16, 2018 Can You post picture from directly above the object? 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
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