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BecE
Hi! I picked up this pebble on Thorpeness beach in Suffolk. There are traces of coral(?) fossils in it, but what are all the holes? Burrows? Erosion from being tumbled in the sea? Thank you! 2668187A-D90B-4C69-A71C-E210F9271A51.jpeg 
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estwing
Piddocks, probably
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prep01
Welcome to the forum. Having looked at the photo, most of the depressions look to be sections of bivalves / brachiopods with some eroded out leaving the oval . round depressions. I have annotated the photo below to show a patch of what I think is a modern Bryozoan.

Image1.jpg 
Colin Huller
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Narlgoth
It looks like Piddock burrows to me.
- Brad
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BecE

Thank you for your replies! Very much appreciated.

Am I correct in thinking that this is a bryozoan? This was picked out of the lower crag at Ramsholt, Suffolk, so should have some age. (I know these aren’t the most exciting of finds, so thank you for your help!) 4443C909-674A-4F2F-9FE8-BC1D03BD97E4.jpeg 

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prep01
Nalgoth, if you enlarge it and look closely, you can see the raised edges of the shells.
Colin Huller
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Narlgoth
Oh yeah, zoomed in last time and saw nothing, zoomed in this time and saw edge of a shell. We have a similar holey rock but with much more obvious shells in it, shows how your own experience effects your future judgement 😆
- Brad
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