Since when does a bivalve have a radula? Allen Aigen [log in to unmask] ---------- "Barney, Winston" <[log in to unmask]> writes: From: "Barney, Winston" <[log in to unmask]> To: [log in to unmask] Subject: Re: Conchology 101 Question Date: Mon, 9 Sep 2002 10:15:58 -0500 If there has to be one defining characteristic of mollusks is must be the possession of a RADULA. Winston Barney I have yet to find any site that will tell me what characteristic(s) alone separate mollusks, and exclude all other species from this phylum. > > Sincerely, Bret > [log in to unmask] > Allen Aigen [log in to unmask]