The fact that the inside of the shell is shiny is pretty good evidence
that it is not  a polychaete but probably a gastropod.  It also looks
like it has at least two distinct layers at the broken end, typical of
gastropods.  The attached sand grains are odd, but not all that
important.  Perhaps it is a vermetid protoconch (plus 1/2 whorl), which
attaches itself to a substrate (generally larger than sand grains
though...)

Allen Aigen  NYC
[log in to unmask]


On Fri, 5 Oct 2007 00:01:50 -0400 David Kirsh <[log in to unmask]>
writes:
> Did you ever wonder what phylum you were in? I mean whilst looking at
> a biological artifact from the ocean.
>
> Please take a whack at "Hey, is dis a mollusk?" on the webpage:
>
> http://z14.invisionfree.com/Conchologist_Forum/index.php?showforum=53
>
> Thanks in advance,
>
> David Kirsh
> Durham, NC
>
> "I learned long ago, never to wrestle with a pig. You get dirty, and
> besides, the pig likes it." -- G.B. Shaw
>
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