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Re: paleonet Origin of genus Globigerinellopsis and speciesGlobigerinellopsis mitra



On Thu, 13 Jul 2006, Robert Huber wrote:

> Date: Thu, 13 Jul 2006 10:24:11 +0200
> From: Robert Huber <robert.huber@stratigraphy.net>
> Reply-To: paleonet@nhm.ac.uk
> To: PaleoNet <PaleoNet@nhm.ac.uk>
> Subject: paleonet Origin of genus Globigerinellopsis and species
>     Globigerinellopsis mitra
> 
> Dear all,
>
> Recently I was playing with the CHRONOS tool which frequently
> sends database queries to my TaxonConcept toy.  One of the
> 'demo taxa queries' I received many times was for the taxon
> Globigerinoides mitra, which is fine..
>
> When comparing the TaxonConcept search results with those of
> CHRONOS I found that CHRONOS has listed a synonym called
> 'Globigerinellopsis mitra. '
>
> I never heard of this Genus, which doesn't mean too much ;),
> but I got curious and tried to find out where the name comes
> from using several databases with little success.
>
> The only hits I got was from literature databases was the
> article:
> Boersma, A. 1984 Cretaceou-{Tertiary planktonic foraminiferas
> from the south-eastern Atlantic, Walvis Ridge area, Deep Sea
> Drilling Project Leg 74. Initial Rep. DSDP 74,501-523
> But here the name is only used in relative abundance counts a

Dear Robert,

within the DSDP (= not ODP and not IODP) several species have been
identified only by one author - e.g. those being familiar with
the basin/ocean that was drilled.

Referring to that some authors working on Neogene paleotemperatures
excluded in their software all species from the DSDP database (first
the DSDP paleontology tape, then the CD now the databases) that
fulfil above criterion.

I think, amongst others, possible K. Romine or Moore and Lombari
did so.

In case you aim at optimizing pangae (or others Chronos, etc.) you
might introduce a "synonym option".

This option might in the paleoecologica processing consider for
example abve G. mitra as being the mentioned synonym.

I did it this way for example for "typing-error synonyms", e.g.
replacing some Neogloboquadrina achyderma by Neogloboquadrina pachderma
with (S) and (D) as appropriately.

To conclude:

(1) I would not be too worried about the primary origin of the name.
(2) I would include an option to use the synonym instead, e.g. leave
the original database as it is, but software analzing watermasses
might consider synonyms.

Above mentioned "DSDP-phenomenon" (species observed only by one
author) is not a single case.


> sytematic section is missing.
> Other hits lead me to the PANGAEA database where other species
> count data from A. Boersma are listed.
>
> I am still wondering where the genus name comes from (is it a
> valid name?)and if Globigerinellopsis mitra is really a synonym
> for Globigerinoides mitra...
> Maybe someone can direct me to some reference(s)?
> Thanks in advance,
>
> Robert

Best regards

Peter

>
> P.S:
> Here are some links to CHRONOS/TaxonConcept/Pangaea if you
> want to test the queries yourself:
>
> http://portal.chronos.org/gridsphere/gridsphere?cid=xqe_beta
> http://taxonconcept.stratigraphy.net
> http://www.pangaea.de/PangaVista
>
>
> Dr. Robert Huber
> WDC-MARE / PANGAEA - www.pangaea.de, www.wdc-mare.org
> Stratigraphy.net - www.stratigraphy.net
> _____________________________________________
> MARUM - Institute for Marine Environmental Sciences (location)
> University Bremen
> Leobener Strasse
> POP 330 440
> 28359 Bremen
> Phone ++49 421 218-65593, Fax ++49 421 218-65505
> e-mail rhuber@wdc-mare.org, robert.huber@stratigraphy.net
>
>

**********************************************************************
Dr. Peter P. Smolka
University Muenster
Geological Institute
Corrensstr. 24
D-48149 Muenster

Tel.: +49/251/833-3989   +49/2533/4401
Fax:  +49/251/833-3989   +49/2533/4401
E-Mail: smolka@uni-muenster.de
E-Mail: PSmolka@T-Online.de
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