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Villager

Hi, I’ve found what I think is a fossil in a recently ploughed field near Eydon on Northamptonshire. I’m intrigued as it fits together so beautifully; any idea what it might be? Part of a sacrum possibly? It looked to be in one piece when I picked it up but it then fell apart into the two interlocking segments, and I think it would split again with a little bit of encouragement.

Thanks!
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Brittle Star
Hi
That is part of an ammonite by the looks of things
JW

 Never ask a star fish for directions
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prep01
Hello and welcome to the forum. What you have found are 2 chambers of an ammonite with interlocking 'sutures'. The area in which you found it is the Middle Jurassic, around 170 million years old.
Colin Huller
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Villager
Thank you! That makes a lot more sense...would it have been a big one? (I'm a complete rookie!)
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Villager
Ah, that makes sense. It's bigger then than I imagined they got to be. Thanks!
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prep01
There is no way to tell really, some ammonite genera are a few millimeters in diameter and some are 1 meter!
Colin Huller
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