Acanthina species also have a labial tooth, though not as long as that of
Opeatostoma. Several other Muricid groups do also.

Paul M.

> ----------
> From:         lindawbush
> Reply To:     Conchologists of America List
> Sent:         Thursday, October 9, 2003 3:29 PM
> To:   [log in to unmask]
> Subject:      Opeatostoma feature in another species?
>
> Hi, Everyone!
>
> We are all aware of the single tooth at the anterior of
> the aperture of Opeatostoma pseudodon.  BUT, I just
> uncovered a shell in the club collection that had an
> Acanthina angelica label in it.  And it bears the general
> shape of an Acanthina, but there is a false tooth just
> like that of Opeatostoma.  Are there any other species in
> the genus Opeatostoma?  This is obviously NOT that
> species, as it is a mottled brown, nodulose shell.
>
> What gives?  This was a real surprise to me.
>
> Thanks,
> Linda
>
>