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Dawnie
I found this but not sure what fossil it is. Please help. It was found many years ago.  253C007B-4CA0-4085-9BBF-521DBF6D64F4.jpeg  2889E51C-CBA5-4603-8DCC-171EB28A9058.jpeg 
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Dirty Pete
Hi Dawnie.
From where I'm sitting that looks like cryptocrystalline silica of some sort and suspect the footprint is a case of pareidolia. I think its just natural erosion.

Pete
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Dawnie
Hi Pete, thank you for your reply. Can you explain how it could be that when the rock isn’t crystal? I’m not a rock person but if you could explain more to me. Thank you very much 🙂
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pauledevans
Hi there. “Cryptocrystalline” just means a crystalline structure that isn’t visible to the naked eye. You’d be stunned how many rocks that don’t look like crystals, but are crystalline in that sense.

Do you recall roughly where you found it? Knowing more about the kind of rock it is will tell us loads about whether it could be a footprint. The kind of theropod footprints you have in mind are rare and only appear in sedimentary rock, and then specifically rock formed from sediments laid down where creatures might have walked across them. So, beaches, mudflats, estuaries etc..

Looking at the pictures you shared, it doesn’t look like that kind of rock. It looks more like a chert which is sedimentary, but forms from sediments of deep ocean floors, and is cryptocrystalline as Pete suggested.

So, knowing where you found the rock might inform what type of rock it is, as it probably relates to the bedrock under your feet in that place. That’ll give us the age of the rock, how it formed, and whether theropods were around there and then.

Hope that makes sense 🙂
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Dawnie
Thank you for replying. I think I found Isle of Wight beach many years ago but not sure when. always thought it was a little foot 😂 oh well
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cinders
It’s not a footprint, but just a depression on some flint I’m afraid. 
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