What are these

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This topic contains 3 replies, has 3 voices, and was last updated by  David Powers 1 year, 1 month ago.

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    David Powers

    Today in the Little Belt mountains I came across this slab of rock with these tube fossils. At first ti thought they were Criniod stems. The longest one is about 6 cm and as thick as my little finger. The stone is a shale like limestone.  The stone is somewhat soft.  It is mission canyon formation or lodgepole part of Madison limestone group.  Mississippian period.

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    Victor Perez

    Looks like they may be cephalopods, more specifically they appear to be orthoceratoids.


    Jack Kallmeyer

    @david-powers @vperez  Yup, definitely cephalopods




    David Powers

    Hey thank you Victor and Jack. Now I have to figure out how to get them home.




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