Perhaps you were thinking of one of the following:

Krommenhoek, Willem. 1997. An Example of Uneven Distribution of Right and
Left Valves of the Common Sand Gaper, Mya arenaria L., along the Dutch
Coast. Of Sea and Shore, 20:3:167-68

Krommenhoek, Willem. 1998. Some More Caces of Uneven Distribution Along the
Dutch Coast. ibid. 21:1:7

Krommenhoek, Willem. 1999. Once More About Uneven Distribution of Right and
Left Valves. ibid. 22:3:141

Tom Rice, Editor of ibid
-----Original Message-----
From: Steven & Wanda Coker <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Wednesday, December 29, 1999 12:59 PM
Subject: Bivalve Article - Study


>On a recent shelling trip to South Padre Island we found several hundred
>Angel Wing valves (Cyrtopleura costata Linne, 1758) on the beach.
>Surprisingly, almost all of them (90-95%) were the left valve.  I seem to
>recall reading an article or study which was conducted on this type of
>phenomenon but of course cannot remember where I saw it.  Can anyone out
>there in Conch-land point me to the article or better yet have an
>explanation.
>
>Thanks,
>
>Steven
>Texas
>