My son Tom found this item on the beach at low tide in Lyme Regis. I believe it may be a part of a backbone of an ancient sea creature. Can anyone help identify it?
Thanks in advance
It's not a vertebrae (back bone)...
But on pic 5 there is a bivalve (fossil sea shell) on the bottom of the rock.
Hopefully mike will know what rock it is. I don't specialise in geology, so I can only guess what type of rock it is, but...
I don't think it's volcanic or metamorphic, so I think it's sendementery.
I hope this helps; keep looking though- you never know what you could find.
Don't be too disapointed because you have still found something very interesting.
I think it is a Cretaceous sponge, preserved in flint and the openings that you can see are were the water flowed through the specimen.
Very nice find.
I concur with Tabfish.
There are quite a lot of sponges, and they come in quite a range of shapes and sizes.
I couldn't name your particular sponge, but here's one a bit similar to yours - http://www.cretaceous.de/Phymatella.html