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2911 Views 5 Replies Last post: Sep 13, 2013 9:29 PM by Tabfish RSS
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Aug 5, 2013 10:47 AM

Mussel (?) fossil found in Fife

Hi, Please can you help ID if this is a mussel, if so if any particular kind/age/other info? It was found in a disused limestone quarry in Fife, which is teeming with masses of crinoid fossils.

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      Sep 2, 2013 9:11 PM (in response to jess1984)
      Re: Mussel (?) fossil found in Fife



      Sorry you didn't get a response.


      Yes - it appears to be a fossil oyster, though I can't say which one.

      It has similarities with Gryphaea spp.

      Here's a photo, giving an idea of what yours should look like from the side



      I have to say, though, the appearance of your specimen (1375700208818.jpg) looks a bit odd; it looks like a fake. It gives the impression those ridges come to abrupt ends, rather than curving round gracefully (as in the photo I linked to). I know such an appearance can arise in 'thick' specimens, but the shadows in the photo do not suggest such 'thickness'. Also, the other photo (1375700223979.jpg) shows an operculum (closing plate) that looks more like an ammonite aptychus.


      Two questions:

      - Do you have a photo of the specimen from the side?

      - Is there a chance it might be a fake? (Are you sure it came from a quarry?)



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          Sep 3, 2013 10:09 PM (in response to jess1984)
          Re: Mussel (?) fossil found in Fife

          Hi Jess,


          Thanks for the extra photos.

          Curiouser and curioser...

          I don't know.


          If nobody else comes up with an ID in a few days, I think you may need to bring or send it into the Angela Marmont Centre Identification and Advisory Service at the NHM.



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    Sep 13, 2013 9:29 PM (in response to jess1984)
    Re: Mussel (?) fossil found in Fife

    Hello Jess

    The first specimen does look like a Gryphaea sp that has suffered some 'trauma' because of the fossilisation process or the geological timescale and the forces of nature.

    I have attached an image of two Gryphaea arcuata - one with the rock removed and one as we usually find them on the Yorkshire coast they come from the Lower Jurassic - lower Lias and are aprox two hundred million years old.

    Your second fossil looks to be a Brachiopod with two unequal half's to the specimen unlike bivalves that have two equal sides, Pseudopecten for example, similar to a Scallop.



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