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655 Views 4 Replies Last post: Apr 5, 2014 11:36 PM by Ryanc RSS
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Mar 23, 2014 11:42 AM

Lower Oxford Clay micro fossils

Hello everybody,

 

 

I usually collect Vertebrate fossils from the Lower Oxford Clay of Peterborough. But recently I’ve decided to have a go at searching for micros in some Oxford Clay matrix.  I had been told by other collectors from the UK that the fossil density for shark, ray and fish micros in Jurassic matrix from the UK was pretty low so I wasn’t really expecting to find many if any micros in a sample of this size.  I was really surprised that I found as many micro specimens as I did.  I found 10 small fish teeth, one larger fish tooth, one shark tooth (maybe fish?), 7 unknown to me micros, some fossil wood?, and several complete and lots of broken small shells.  I tried hot water at first to break down the clay which was only partially successful.  3% H2O2 was my second attempt which worked really well.

 

All specimens range from 1mm to 3.5mm.

 

Any help in identifying these micros is appreciated.

 

Kind Regards,

 

Darren.

 

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    Mar 20, 2014 10:00 PM (in response to pendlebury)
    Re: Lower Oxford Clay micro fossils

    Hi Darren

    Fantastic images and finds, if you had found them on the Holderness coast I would have had a chance of knowing what they are, but these specimen are special.

    Very nice finds

     

    Tabfish

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        Mar 23, 2014 10:26 PM (in response to pendlebury)
        Re: Lower Oxford Clay micro fossils

        Hi Darren

        I would say they are fish teeth, I have a bone block with a curved small fish tooth inside of it, I will try to take an image of it.

         

        Tabfish

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          Apr 5, 2014 11:36 PM (in response to Tabfish)
          Re: Lower Oxford Clay micro fossils

          Very nice - I also dabble in micro-fossils and have looked at the lower oxford clays in the Peterborough area.

           

          The top one and the other curved pieces are actually the hooklets of belemnites - nice detail on these - if you look at your top picture closely you can see shortly after the tip a notch with a line coming in from it?

           

          Thats the seperation point where the claw was designed to break off at.

           

          The teeth with the white tips are all fish teeth - some attribute all the teeth with white tips to a particular family of fish but I would leave it at fish personally unless you can find a more complete section.

           

          Great pictures by the way!

           

          Edit - oh and please post any other unknowns - I'm not an expert and frankly I have a few unknowns of my own from the oxford clay but I may know what some of them are

           

          Regards,

           

          Ryan

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