Hello Enzo,

You may be referring to a series of pictures I did for
Seashell-Collector.com
If so, I never got as far as the bivalves. There are only gastropod families
illustrated, and I have yet to complete that section.
I need to get back to that project at some point.
Anyway, if that is the page you are referring to, it can be found here:

http://www.seashell-collector.com/beginners/family_id.htm

Regards,
Paul Monfils