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3384 Views 21 Replies Last post: Apr 25, 2014 2:35 PM by brettarcher RSS
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Apr 15, 2014 5:08 PM

Is this the footprint of a dinosaur?

Hi - I'm new here

 

We found this on the beach at Redcar, north-east England. It has indentations which appear to suggest a toed foot, made when the rock was soft - which was, presumably, millions of years ago.

 

Any help at identifying this would be fantastic. Thank you in advance.

P1040409.JPG

 

P1040410.JPG

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    Apr 15, 2014 6:04 PM (in response to Alastair)
    Re: Is this the footprint of a dinosaur?

    Alastair, please could you post a photo close-up and from the side?

     

    Mike

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        Apr 15, 2014 8:19 PM (in response to Alastair)
        Re: Is this the footprint of a dinosaur?

        Alastair, thanks.

        Somehow you have managed to miss the view I was hoping for! [smiley]

         

        If you could take one showing each of the 'long' sides, that would be helpful. I need to see if there is any fabric in the rock that follows the undulations of the main feature.

         

        Mike

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            Apr 15, 2014 9:35 PM (in response to Alastair)
            Re: Is this the footprint of a dinosaur?

            It doesn't need to be bigger as such; I just need to see closer-up (and it needs to be sharp, so you'd need a macro facility of one sort or another).

            So, to avoid a big file, and if it is sharp enough, perhaps can you crop the 14Mp copy to show just the cross-section of the undulating bit including about half the rock below it?...

             

            Mike

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                Apr 15, 2014 10:08 PM (in response to Alastair)
                Re: Is this the footprint of a dinosaur?

                Alastair,

                 

                Thanks. That's the area I wanted to see. It could be sharper, but I get the impression there is a fabric in the surrounding rock that follows the undulations of the main feature (which also has internal layers). that leads me to think it is entirely non-fossil. I think what you have is a cobble composed of schist including a pale layer (probably quartz) which could have been a plane (flat) vein at a stage prior to the folding that simultaneously buckled the host rock and the pale layer. The curious shape you see now, in your specimen, is a consequence of how the surface of the cobble intersects the larger 3-dimensional buckled structure.

                 

                There are some curious things in the last photo, however, and I can't decide if they are fossils or minerals. If you could post a sharper photo showing the same are, that might help. That might alter my opinion.

                 

                Mike

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    Apr 15, 2014 11:58 PM (in response to Alastair)
    Re: Is this the footprint of a dinosaur?

    Hi

     

    I hate to say because other replies are more expert but  it looks to me to be the remains of the edge of an Ammonite ie  from a vertical view  from the centre looking out, the remains of the external worls are deminished left and right of the 3 central impressions

    Steve

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      Apr 16, 2014 12:47 AM (in response to basquesteve)
      Re: Is this the footprint of a dinosaur?

      [smiley]

       

      I know what you mean, Steve, but:

      - there is no sign of any suture or septum, and

      - as stated, I am not sure yet; mine is only a working hypothesis; I would be happy to be proved wrong by you

       

      Mike

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          Apr 16, 2014 12:22 PM (in response to Alastair)
          Re: Is this the footprint of a dinosaur?

          Alistair,

           

          It helps, but it also continues to frustrate! There are definitely a lot of platy grains in the dark host material, but I still can't decide (without a microscope) it they're mineral or fossil.

           

          While I would not be too surprised to find metamorphic rocks on the beach at Redcar, local (non-metamorphic) ones would obviously be more common (from the Redcar Mudstone Formation). That leans me towards the platy grains in the dark material being fossil.

          There is a slight radial arrangement of the undulations, which would fit with your ammonite idea, Steve.

          And I have found this specimen/image from Redcar/Marske, by 'ChrisJH'

          - http://www.discussfossils.com/forum/forum_posts.asp?TID=2880&title=recent-fossils-from-redcar (the second photo). That has similarities to yours, Alastair, and it is clearly part of an ammonite, albeit without visible sutures or septa.

           

          So on balance, I go with Steve in suggesting it is probably part of an ammonite. Good call steve.

           

          Mike

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              Apr 16, 2014 10:20 PM (in response to Alastair)
              Re: Is this the footprint of a dinosaur?

              I will agree with the depth of knowledge posters show on this site I am learning new things everyday sometimes I have no idea what they are talking about I

              It amazing the things people find and then  ponder on what it is, long live mans curiousity in nature

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    Apr 16, 2014 10:30 PM (in response to Alastair)
    Re: Is this the footprint of a dinosaur?

    Hello Alastair

    Your find has created some interest.

    Steve said what it is - an edge of an ammonite probably Paracoroniceras sp.

    North East coast 'Paras' are very rare unlike the south coast specimens and to find a piece of one is good.

    Well done.

     

    Tabfish

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    Apr 25, 2014 2:35 PM (in response to Alastair)
    Re: Is this the footprint of a dinosaur?

    hi i think its part of a ammonite with tops of the ridges worn off .... etc

    the maybe from inside out either that or a worn jawbone of the

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