Thanks, Andrew. I feel more like a chordate now.

As you point out, it's good to bear in mind that coiling is not proprietary to gastropods, nor mollusks.

David Kirsh
Durham, NC

-----Original Message-----
>From: Andrew Grebneff <[log in to unmask]>

>Many forams, resting nematodes, some polychaet tubes etc are coiled.
>Coiling is not limited to Mollusca, though it is most apparent in
>that phylum. And among molluscs, cephalopod, scaphopod,
>monoplacophoran, rostroconch (extinct) and bivalve shells are coiled,
>not only gastropods, though in some the coiling is reduced or
>secondarily modified.


"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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