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Greg8430
Hi Fossil found in Trowbridge Wiltshire 7-8 years ago.  it was found in untouched green sand on its own about 2 to 3 metres.deep while digging out for a basement.

Can anybody help identify it. as to me it looks to be the shape of a large claw.?? Click image for larger version - Name: 20191021_082952.jpg, Views: 32, Size: 395.54 KB Click image for larger version - Name: 20191021_082932.jpg, Views: 32, Size: 316.09 KB Click image for larger version - Name: 20191021_082922.jpg, Views: 31, Size: 385.51 KB Click image for larger version - Name: 20191021_082905.jpg, Views: 31, Size: 393.92 KB Click image for larger version - Name: 20191021_082836.jpg, Views: 31, Size: 407.57 KB Click image for larger version - Name: 20191021_082853.jpg, Views: 29, Size: 370.84 KB Click image for larger version - Name: 20191021_082826.jpg, Views: 27, Size: 386.35 KB
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CurtKnap
It's not a claw, but looks like part of the keel (outside edge) of an ammonite.
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Barrow Museum
It's really not quite enough to provide a positive identification, but does resemble part of an Upper Jurassic ammonite belonging to either the genus Ringsteadia, Pictonia or Rasenia.  These are a closely related evolutionary series and the outer whorl (he body chamber in which the animal actually lived) tends to become smooth with only subtle differences between different species.  If you had been lucky enough to find inner whorls as well, it would have been an easier job to identify.  Your item is mainly the mudstone-infilled body chamber, with the crushed end showing the beginning of chambers of what was the air/water filled septate portion (chambers) in which the ammonite creature could vary the proportions of fluid to adjust its buoyancy in the Jurassic seas some 150 million years ago  The septate part is crushed because mud could not easily fill the compartments, which were separated from each other by a characteristic rather convolute shell wall and when the clay compressed, it consequently squashed the central part with it.  The junction of these divisions (septae) with the outer shell creates a squiggly line called the septal suture.
You will also see some hollow linear features in the first photo.  I suspect that these may be what is left of serpulid worm tubes, which would have inhabited the inside of the empty ammonite shell once it lay on the sea floor.  As they are only to be seen on one side, it infers that this was the uppermost side, whereas the lower side would have already had a mud covering and did not attract any encrusting organisms which would have found the shelter of an empty shell so convenient.  A whole story can be told just from one fragment.

There are one or two alternative, smooth whorled ammonites from a little lower in the Jurassic, so I am not 100% sure of my suggestion.
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Anonymous
Thanks for your feedback.  checking pictures of ammonite fossils I can see quite a few that resemble my fossil..  Great to know what it is.. 
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