This is a puzzle; each platelet is about 1cm squared. There are 2 clearly visible. The flint on our beach comes from Beachy Head. Please help!
Great find Willow
It's part of a fossil sea urchin (Echinoid)
Yes - nice - and very nice preservation.
This page should give you a clue how the two plates in your fossil fit into the overal Echinoid design
(though the ornamentation on your particular fossil is simler).
Yours is more like this one
Thanks for such a detailed answer Mike. I'm really glad to find out what it is, and how it relates to the rest of the animal.
Thanks Tabfish; it's great to know what it is. It's such a lovely find, and has made my week!
I am sure there are more to find but it won't be easy to beat your specimen.