Help Appreciated.

[rainforest]

Hello everyone,
Recently my grandfather gave me a large box of unidentified shells from all over the world, and I'm looking to identify as many as I can.
There's some I'm completely stuck on, though, so any suggestions/information would be much appreciated.


Not sure at all what this is, but I thought I'd try my luck:




That's only a fraction of what's in the box- but I'm starting small

[Bart]

Dear Rainforest,

To begin with: it is always better to photograph both sides of a shell so that you can see the back and the aperture. You have sent 4 photographs. I will start from top to bottom:
no. 1 - Turritella terebra
no. 2 - no shell ; it is a spine of a sea-urchin
no. 3 - Pecten-species (for this I really need a locality where it was found)
no. 4 - Lambis crocata (when the mouth is bright orange/red)

[dave r]

I would say the Pecten is Pecten maximus, the Great Scallop, common in Europe.