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305 Views 3 Replies Last post: Mar 28, 2014 9:52 PM by MikeHardman RSS
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Mar 28, 2014 8:06 PM

Another Fossil that Needs Identification...

I would like to put all my unknown fossils together in one single discussion but it only allows 5 pics... Sorry if i'm bothering anyone with all the posts... Can anyone identify this fossil? Almost looks like a little worm-ish thing wrapped around a rock. I found it quite interesting

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    Mar 28, 2014 8:31 PM (in response to Kristyx0x0)
    Re: Another Fossil that Needs Identification...

    Kristy,

     

    I think this is part of a rugose coral. You'll find a comparable specimen illustrated part-way down this page -

    http://www.ocean.odu.edu/~spars001/geology_112/laboratory/session_08/solutions.html (search for 'Rugose Coral')

     

    Mike

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        Mar 28, 2014 9:52 PM (in response to Kristyx0x0)
        Re: Another Fossil that Needs Identification...

        Kristy,

         

        Almost all fossils occur inside rocks. It is only when the rocks are weathered or otherwise reduced that we start to glimpse the fossils. If we are lucky, the whole fossil comes loose. With the coral above, you are seeing it just partly exhumed from the rock that had encarserated it for millions of years.

         

        Of the last five photos, the first two are very fossiliferous; they may be just fossil-rich rocks, or they may be coprolites (thinking mainly of the sausage shaped ones). The last three will have taken your interest because of the tiny round grains that comprise them. As is often the case, I would like to have a look under the microscope to be sure, but I think these are examples of oolitic limestone. I'll let you Google oolite. The little round holes are where individual ooliths have come out.

         

        Mike

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