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  1. Aug 19, 2010, 08:16 AM #1
    Felinepeachy

    Just curious.......

    .....about what this was.
    Attached Thumbnails Attached Thumbnails Just curious.......-img_0147.jpg  
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  2. Aug 19, 2010, 02:28 PM #2
    Harry Pristis
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    us
    Feb 2009
    Northcentral Florida
    1,066
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    Re: Just curious.......

    The cavities appear to be the traces of crinoid columnals (stem sections) that were preserved, then dissolved away.

    Imagine something like this:

    Just curious.......-geodecrinoidcolumnals.jpg
    “A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber room of his library, where he can get it if he wants it.”
    --Sherlock Holmes (Arthur Conan Doyle) in "The Sign of Four"
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  3. Nov 01, 2010, 01:39 PM #3
    Exnihilo
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    fr
    Jan 2009
    30

    Re: Just curious.......

    It could be pentacrinus (or others crinoids from Toarcian) but your find is very uncommon.
    ’Twas brillig, and the slithy toves
    Did gyre and gimble in the wabe;
    All mimsy were the borogoves,
    And the mome raths outgrabe.
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  4. Nov 03, 2010, 03:01 PM #4
    Solius Symbiosus
    Solius Symbiosus is offline
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    Aug 2009
    57

    Re: Just curious.......

    It is next to impossible to identify a crinoid from a stem, and to assign a time Well...

    FWIW, stalked crinoids(other than comulatids) became extinct after the Paleozoic.
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