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