The shells in the larger rock are Turritella sp.  For some reason,
Turritella shells are often fossilized in huge masses, and the hard rock
containing such masses are often referred to as "turritella agate".

The main shell in the smaller rock appears to be a naticid (moon snail),
but I can't rule out a trochid (top shell).





>
> From: Avril <[log in to unmask]>
> Date: 2005/07/10 Sun PM 11:11:24 EDT
> To: [log in to unmask]
> Subject: Fossil Mystery
>
> Hello Conchlers,
>
> I have a lady needing help identifying some fossils.  If you are
interested
> in seeing the fossil, they can be viewed at:
> http://www.manandmollusc.net/Mystery_shell_pages/diane-
mystery.html
>
> Information can be emailed personally to Diane at:
[log in to unmask]
> or if it is sent to the list, I will forward it onto her.
>
> Thank you in advance for any and all help.
>
> All the very best,
> Avril Bourquin
>
>

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