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Troy Armour
Found on the beach in Brighton UK. Have had this for a number of years and always been curious as to what it was and how old it might be.

I'm a novice and have just started collecting, would appreciate any help. Click image for larger version - Name: IMG_20200401_100322.jpg, Views: 49, Size: 181.47 KB
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Brittle Star
I do not know how old. It is an imprint of an echinoid. There may be more inside.
JW

 Never ask a star fish for directions
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Richard
It is preserved in flint from the Upper Chalk  and its probable age is about 85 million years. 
Richard
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Dirty Pete

https://www.bgs.ac.uk/discoveringGeology/time/Fossilfocus/echinoid.html
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prep01
Welcome to the forum, yes this is a small part of an imprint in flint of part of a regular echinoid (sea urchin) showing a few attatchment from the shell where the spines fixed.It will be around 75 - 85 million years old.
Colin Huller
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