----- Original Message -----
From: "David Kirsh" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 02, 2004 8:06 PM
Subject: Re: Sinistral Conch and Whelk types


> Harry and all,
>
> Seeing these specimens side by side raises a question for me I've had for
> while. When I see a sinistral shell, I have a very strong sensation that
the
> shell is tilted or skewed--a sensation I don't have with dextral shells.
>
> This comparison makes it really obvious: at least with some sinistral
> shells, they really aren't just mirror images of dextral ones.
>
> David Kirsh
> Durham, NC
> >

They are! Hold a mirror in front of them and you'll be surprised. The
skewing apparently is in the brain (weird enough, people who never collected
shells do not see it!)


Marien Faber
www.mollus.nl

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------