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FA23BCA6-5D03-4A10-8D80-A02B46185EB7.jpeg  469A642D-738D-4DA4-9659-4E2DC2082309.jpegHi, 
I picked these up free from an address in Bedfordshire (Clophill) as I wanted to build a rockery. 

What a find! Can you tell me anything about them please?

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I would say Echinoids (sea urchins) in flint. Probably about 80-ish million years old, if they're from the chalk
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Barrow Museum
They are fossil sea urchins The top one looks like it is a Echinocorys, but can't be absolutely sure as it is rather eroded.  The apex is just hidden in the flint nodule, at the top of the picture.  If it was not enclosed, you would have something like the picture, below.  I think that your better example suffered a little compression before fossilisation, as the egg-like shape appears to have been a bit deformed - this is not uncommon. The white line defining the lower one is the original shell (or "test" in sea urchins).  The rock they are preserved in is flint, which formed as layers of silica nodules in the Chalk, which makes these representatives of marine life some 80-90 million years ago, in the Late Cretaceous period.  Nice finds, and eminently suitable rockery material.

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Brittle Star
Hi, what a surprise. It shows an Echinoid, someone may be able to give you more information.

 Never ask a star fish for directions
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Thank you so much for your replies - mind boggling!! 


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