Neomphalina

Neomphaloidea is a superfamily of deep-sea snails or limpets, marine gastropod mollusks. Neomphaloidea is the only superfamily in the order Neomphalida.

The order Neomphalida has the largest ''in situ'' radiation in hydrothermal vent habitats. Neomphalida is a major taxonomic grouping of sea snails, vent-endemic marine gastropod mollusks that form a very ancient lineage, going back to the Palaeozoic era.

2005 taxonomy

The superfamily Neomphaloidea was regarded for a long time as belonging within the clade Vetigastropoda. Superfamily Neomphaloidea was also classified in the clade Vetigastropoda according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.

2010 taxonomy

Molecular phylogeny showed however that it belongs in its own order , the Neomphalida, and that this clade is basal to the Vetigastropoda. The Neomphalina is, based on optimal phylogenetic analysis, a monophyletic clade, with uncertain relations among the gastropods.

Description

The anatomical characters of the Neomphaloidea largely follow the patterns as in the Vetigastropoda. However, unusual morphological and phylogentic characters suggest a different systematic position and place it in its own order, the Neomphalida. The formal placement of Neomphalida within the Gastropoda however remains ambiguous.Stephanie W. Aktipis & Gonzalo Giribet (2010). "A phylogeny of Vetigastropoda and other “archaeogastropods”: re-organizing old gastropod clades". ''Invertebrate Biology'' 129(3): 220-240
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Families

Families within the Neomphaloidea include:
* Melanodrymiidae Salvini-Plawen & Steiner, 1995
* Neomphalidae McLean, 1981
* Peltospiridae McLean, 1989

A few genera within Neomphaloidea have been unassigned to a family:
* '' Helicrenion'' Warén & Bouchet, 1993
* ''Retiskenea'' Warén & Bouchet, 2001Bouchet, P. (2010). ''Retiskenea'' Warén & Bouchet, 2001. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=449910 on 2017-05-26

Overview of species

Species within the Neomphaloidea include:
# ''Leptogyra alaskana'' Bartsch, 1910
# ''Leptogyra constricta'' B. A. Marshall, 1988
# ''Leptogyra costellata'' Warén & Bouchet, 2009
# ''Leptogyra eritmeta'' Bush, 1897
# ''Leptogyra inconspicua'' Bush, 1897
# ''Leptogyra inflata'' Warén & Bouchet, 1993
# ''Leptogyra patula'' B. A. Marshall, 1988
# ''Leptogyra verrilli'' Bush, 1897
# ''Leptogyropsis inflata'' Hasegawa, 1997
# ''Leptogyropsis kalinovoae'' B. A. Marshall, 1988
# '' Leptogyropsis kaltanae'' B. A. Marshall, 1988
# ''Melanodrymia aurantiaca'' Hickman, 1984
# ''Melanodrymia brightae'' Warén & Bouchet, 1993
# ''Melanodrymia galeronae'' Warén & Bouchet, 2001
# '' Xyleptogyra kapalae'' B. A. Marshall, 1988
# ''Cyathermia naticoides'' Warén & Bouchet, 1989
# ''Lacunoides exquisitus'' Warén & Bouchet, 1989
# '' Lacunoides vitreus'' Warén & Bouchet, 2001
# '' Lamellomphalus manusensis'' S.-Q. Zhang & S.-P. Zhang, 2017
# '' Neomphalus fretterae'' McLean, 1981
# '' Planorbidella depressa'' Warén & Bouchet, 1993
# '' Planorbidella planispira'' (Warén & Bouchet, 1989)
# '' Solutigyra reticulata'' Warén & Bouchet, 1989
# ''Symmetromphalus hageni'' L. Beck, 1992
# ''Symmetromphalus regularis'' McLean, 1990
# ''Chrysomallon squamiferum'' Chen, Linse, Copley & Rogers, 2015
# '' Ctenopelta porifera'' Warén & Bouchet, 1993
# '' Depressigyra globulus'' Warén & Bouchet, 1989
# '' Echinopelta fistulosa'' McLean, 1989
# '' Gigantopelta aegis'' Chen, Linse, Roterman, Copley & Rogers, 2015
# '' Gigantopelta chessoia'' Chen, Linse, Roterman, Copley & Rogers, 2015
# '' Hirtopelta hirta'' McLean, 1989
# '' Hirtopelta tufari'' L. Beck, 2002
# '' Lirapex costellatus'' Warén & Bouchet, 2001
# '' Lirapex granularis'' Warén & Bouchet, 1989
# '' Lirapex humatus'' Warén & Bouchet, 1989
# '' Nodopelta heminoda'' McLean, 1989
# '' Nodopelta rigneae'' Warén & Bouchet, 2001
# '' Nodopelta subnoda'' McLean, 1989
# '' Pachydermia laevis'' Warén & Bouchet, 1989
# '' Pachydermia sculpta'' Warén & Bouchet, 1993
# ''Peltospira delicata'' McLean, 1989
# ''Peltospira lamellifera'' Warén & Bouchet, 1989
# '' Peltospira operculata'' McLean, 1989
# '' Peltospira smaragdina'' Warén & Bouchet, 2001
# ''Rhynchopelta concentrica'' McLean, 1989
# '' Helicrenion reticulatum'' Warén & Bouchet, 1993
# '' Retiskenea diploura'' Warén & Bouchet, 2001

See also

The other superfamily of hydrothermal vent limpets is the Lepetodriloidea.

References

External links

Steffen Kiel (2010), ''The Vent and Seep Biota: Aspects from Microbes to Ecosystems'', Nature

Thomas Kunze, Martin Hess, Martin Brückner, Friederike Beck & Gerhard Haszprunar, ''Skeneimorph gastropods in Neomphalina and Vetigastropoda — A preliminary report'', Zoosymposia 1: 119–131 (2008); ISSN 1178-9913

{{Taxonbar, from=Q874910

Gastropod superfamilies
Neomphalina
Marine gastropods