Possibly somewhat immature. Many gastropods first have a thin lip, then
develop a thicker lip as they mature, and finally develop the teeth or other
lip structures (unlike our own species which progresses from lack of teeth
to development of teeth, to lack of teeth) :-)

Paul M.

> ----------
> From:         Conchologists List on behalf of Linda Bush
> Reply To:     Conchologists List
> Sent:         Tuesday, February 1, 2005 1:46 PM
> To:   [log in to unmask]
> Subject:      This pesky darn shell!
>
> Hello Again,
>
> I am still confused about one characteristic of my "unknown small shell."
> There are NO teeth in the aperture opposite the columella.  The picture we
> found shows teeth there.  Comments?
>
> Thanks,
> Linda
>
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