Malacolog database states maximum reported size is 249mm, so there is
a good starting point.

On 7/2/15, michael reagin <[log in to unmask]> wrote:
> I hope I am not hijacking this conversation but since we are discussing *B.
> carica*, I have a question.  Most of my collecting endeavors are with
> fossil Cenozoic faunas in the Southeastern U.S. where *B. carica* can be
> extremely common in some deposits.  In the Upper Pleistocene Flanner Beach
> Formation along the Pamlico River in North Carolina, *B. carica* form
> *eliceans
> *is found whereas in the Lower Pleistocene Waccamaw Formation also in North
> Carolina all are typical *B. carica*.  The shells in the Waccamaw can get
> extremely large.  The largest which I have found is 244 mm high x 166 mm
> wide.  So what is the record size of modern *B. carica*?
>
> Mike
>
> On Thu, Jul 2, 2015 at 3:49 PM, Harry Lee <[log in to unmask]> wrote:
>
>>  Dear Jim,
>>
>> Good posit. I don't have and definitive answers, but, thanks to the
>> enduring work by you, Linda, other Gulf Coast Shell Club members, and the
>> late Jim Keeler, I had some ammunition to attempt an examination of this
>> disjunction at < http://www.jaxshells.org/pdfs/janfeb10.pdf>, pp. 3-7.
>>
>> I don't think I did a particularly good job with this analysis, but the
>> effort certainly demonstrated the work of amateur conchologists can help
>> inform scientific inquiry.
>>
>> Harry
>>
>>
>>
>> At 02:03 PM 7/2/2015, Jim Brunner wrote:
>>
>> Harry, et al,
>>
>> As you know, a good percentage of the Northwest Florida species could be
>> considered Carolinian in province.  Apparently these specimens 1)
>> migrated
>> to the area before the northern part of the Florida Peninsula formed, 2)
>> were environmentally tolerant enough to come around the keys, or 3) made
>> the southern passage during glacial/interglacial oscillations when the
>> environment was favorable for such migration.  In any event, what does
>> this
>> suggest about the age of this B. carica compared to that of other
>> multi-province species such as B. sinistrum?
>>
>> Jim Brunner
>>
>> On Jul 2, 2015, at 11:46 AM, Harry Lee <[log in to unmask]> wrote:
>>
>> Dear Marlo *et al*.,
>>
>> On Florida's E coast the Knobbed Whelk has been found S of Duval Co. at
>> Matanzas Inlet, St. Johns Co., just N of the Flagler Co. line (Lee, 2009:
>> 109; sp. 522) and to "29 °N" latitude (Rosenberg, 2009), which latter
>> coordinate may translate to Volusia Co. (the next one S). Is this
>> serendipity?
>>
>> Lee, H.G., 2009. *Marine Shells of Northeast Florida.* Jacksonville Shell
>> Club, Inc. 204 pp. + 19 color plates. 28 May.
>> Rosenberg, G., 2009. *Malacolog 4.1.1: A Database of Western Atlantic
>> Marine Mollusca*. Electronic database accessible at <
>> http://www.malacolog.org.org>.
>>
>> Harry
>>
>>
>> From: Conchologists List [ mailto:[log in to unmask]
>> <[log in to unmask]>] On Behalf Of
>> Marlo Krisberg
>> Sent: Thursday, July 02, 2015 11:54 AM
>> To: [log in to unmask]
>> Subject: Re: [CONCH-L] Are Busycon carica and carica eliceans living in
>> West
>> Florida?
>>
>> I can only concur with all comments to the effect that B. carica is not
>> present anywhere in Florida south of Duval County.  Occurrence farther
>> south
>> would be serendipitous.  I have collecting records for west Florida for
>> myself and Phil Poland going back 35 years - no B. carica.
>>
>> Marlo
>> From: Conchologists List [ mailto:[log in to unmask]
>> <[log in to unmask]>] On Behalf Of John
>> Timmerman
>> Sent: Wednesday, July 01, 2015 5:29 PM
>> To: [log in to unmask]
>> Subject: [CONCH-L] Are Busycon carica and carica eliceans living in West
>> Florida?
>>
>> According to reference books ("American Seashells II" records Cape
>> Canaveral) Busycon carica and its associated variants are found living no
>> further south than East Florida.
>>
>> I repeatedly see examples of the species attributed to West Florida,
>> especially in the Sanibel Island area. For the occasional Internet
>> auction
>> being offered by someone who has inherited a relative's shells or
>> collected
>> them decades ago  I easily write it off to incorrect memory but to keep
>> seeing this species time and again attribute to West Florida in
>> collections
>> I have seen in person makes me question.
>>
>> Has the species extended the range naturally and/or been introduced to
>> West
>> Florida?
>>
>> John Timmerman
>> NC
>>
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