We're just back from half term fossil collecting in the Isle of Wight and would be grateful for any help working out what we've found/how old they are.
(1) This one looks like a bivalve with a ridged top. That's my thumb for scale.
(2) This one looks like the imprint left by something rather than the thing itself.
(3) A long pointy imprint one. It's surrounded by various striated edge imprints of something wider than it; I wondered if they were the same thing but in cross section, but they are much wider than this imprint.
(This is a great forum by the way. In 1978 as a girl I took a rock up to the Natural History Museum for identification. It turned out to be iron sandstone with quartz crystals. "I bet you wish they were diamonds!" said the kind woman who identified it for me. I nodded, but actually I didn't because I knew I'd have to sell it if they were, and I wanted to keep it as my Grandad had found it, and had only lately died. I still have that rock. I'm pleased to say my 7 year old daughter has her own drawer full of interesting stones. Great to see a forum full of interested people!)
Thanks for any help.
Hi, the first fossil appears to a bivalve Inoceramus s.p? The second and third are spine imprints from a fossil sea urchin (Enchinoid). All are preserved in flint pebbles and nodules and date from the late Cretaceous probably 70 or so million years ago.
No but that sounds like a good idea for next time! We were camping by Grange Chine and found these (plus some more) just sitting on the big pile of stones, turning them over and looking for anything interesting for an hour or so.
I agree with Polacanthus12.
I particularly like (3) the echinoid spine probably Tylocidaris clavigera (Mantell) known from the Upper Chalk, Upper Cretaceous, SE England.
What do you think Jat?
I'm wondering if you mean what I've called 2 - but not very clearly; it says 3 underneath it. It does look exectly like the imprint from that. How amazing. Very impressed; thank you!