[Taxacom] Are slugs subgroup(s) of snails

[Stephen Thorpe]

Haliotis = abalone = paua (N.Z.), as in comparison to "paua slug" (unrelated but similar shell gross morphology)

________________________________________
From: taxacom-bounces at mailman.nhm.ku.edu [taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of Frederick W Schueler [bckcdb at istar.ca]
Sent: Friday, 4 September 2009 2:58 p.m.
To: taxacom at mailman.nhm.ku.edu
Subject: Re: [Taxacom] Are slugs subgroup(s) of snails

Stephen Thorpe wrote:
> I can understand a semislug, but what the heck would a semi-limpet be like? A semi-coiled, semi-umbrella-like shell???

* that's pretty much a description of Crepidula (Slipper-shells) and
Haliotis (Abalone), and I'm sure those with more knowledge of marine
Gastropod diversity than I have know of many more intermediate forms.

fred.
=======================================
________________________________________
> From: Frederick W Schueler [bckcdb at istar.ca]
> Sent: Friday, 4 September 2009 2:34 p.m.
> To: Stephen Thorpe
> Cc: taxacom at mailman.nhm.ku.edu
> Subject: Re: [Taxacom] Are slugs subgroup(s) of snails
>
> Stephen Thorpe wrote:
>> Well, the best database of them all (Google) has lots of hits for
>> semislugs (so we have divergent opinion yet again! :)
>
> * it's only Creationists who are supposed to be made queasy by the
> existence of intermediate states in an evolutionary process. There are
> also semi-limpets...
>
> fred.
> =======================================
>> http://www.google.co.nz/search?hl=en&source=hp&q=semislug&meta=&aq=f&oq=
>>
>> just forget about the few hits to do with the *S*outh-*E*ast *Mi*chigan
>> *S*un *L*ocal *U*ser *G*roup!
>>
>> Stephen
>>
>>
>> ________________________________________
>> From: taxacom-bounces at mailman.nhm.ku.edu
>> [taxacom-bounces at mailman.nhm.ku.edu] On Behalf Of Frederick W Schueler
>> [bckcdb at istar.ca]
>> Sent: Friday, 4 September 2009 2:15 p.m.
>> To: taxacom at mailman.nhm.ku.edu
>> Subject: Re: [Taxacom] Are slugs subgroup(s) of snails
>>
>> Stephen Thorpe wrote:
>>  > And what about semislugs?! Slugs with visible shells that they can't
>> withdraw into completely! Come on, the whole point with common names is
>> that they are not perfectly precise in meaning - that is why we need
>> scientific names. There is no answer to the question: is a slug also a
>> snail? Actually, this quite nicely illustrates the tendency of certain
>> personality types, common on the list, to try to find perfect  precision
>> where none exists, either in the Code, or in meaning of 'slug'...
>>
>> * a snail is a Gastropod with a coiled shell, a limpet is a Gastropod
>> with a non-coiled, umbrella-like shell, and slug is a Gastropod without
>> enough shell to retreat into. Both of the latter are polyphyletic
>> life-style choices, and the former is hugely paraphyletic, so none of
>> them need the name of an author appended.
>>
>> The above was written without consulting wiki-anything, or the EoL.
>>
>> fred.
>> ------------------------------------------------------------
>>             Bishops Mills Natural History Centre
>>           Frederick W. Schueler & Aleta Karstad
>>        RR#2 Bishops Mills, Ontario, Canada K0G 1T0
>>     on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W
>>       (613)258-3107 <bckcdb at istar.ca> http://pinicola.ca
>> ------------------------------------------------------------
>> If we'd been meant to refer to species by made-up vernacular names,
>>                 God wouldn't have created Linnaeus!
>> ------------------------------------------------------------
>>
>> _______________________________________________
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>> The Taxacom archive going back to 1992 may be searched with either of
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>
>
> --
> ------------------------------------------------------------
>             Bishops Mills Natural History Centre
>           Frederick W. Schueler & Aleta Karstad
>        RR#2 Bishops Mills, Ontario, Canada K0G 1T0
>     on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W
>       (613)258-3107 <bckcdb at istar.ca> http://pinicola.ca
> ------------------------------------------------------------
> If we'd been meant to refer to species by made-up vernacular names,
>                 God wouldn't have created Linnaeus!
> ------------------------------------------------------------


--
------------------------------------------------------------
            Bishops Mills Natural History Centre
          Frederick W. Schueler & Aleta Karstad
       RR#2 Bishops Mills, Ontario, Canada K0G 1T0
    on the Smiths Falls Limestone Plain 44* 52'N 75* 42'W
      (613)258-3107 <bckcdb at istar.ca> http://pinicola.ca
------------------------------------------------------------
If we'd been meant to refer to species by made-up vernacular names,
                God wouldn't have created Linnaeus!
------------------------------------------------------------

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