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Fri, 9 Oct 1998 21:03:57 -0600 |
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Dave,
I've waited for someone to pick up on your shell growth in cassis statements, but
as no one has said anything, I just have to ask. What is the cassis you are
talking about. I have never heard of a shell growing from behind its aperture but
its a big ocean and who knows. I personally believe you are seeing normal growth
with with the forms behind the aperture formed as the shell grows through that
area - but again I can't see your shell so I may be misinterpreting what you've
said. Again, please let us know the species.
Thanks,
Tom Eichhorst in New Mexico, USA
David Lindeman wrote:
> I rescently purchaced a shell in the bonnet/helmet group .It is interesting as
> regards growth in that it seems to inticate growth not from th outer lip but
> from the point where the last varix is.The next varix gets formed first and
> then the shell behind it expands like sea floor spreading .Maybe Im just re
> observing .This same shell has only one varix line for each body whorl.
>
> regards
> dave L.
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