Neomphaloidea

Neomphaloidea
Chrysomallon squamiferum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Neomphalina
Superfamily: Neomphaloidea
McLean, 1981[1]
Families
Diversity[2]
about 50 species

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

The clade Neomphalina has the largest in situ radiation in hydrothermal vent habitats. Neomphalina 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.[3]

2010 taxonomy

Molecular phylogeny showed however that it belongs in its own clade, the Neomphalina, and that this clade is basal to the Vetigastropoda.[4] The Neomphalina is, based on optimal phylogenetic analysis, a monophyletic clade, with uncertain relations among the gastropods.[5] [6]

Description

The anatomical characters of the Neomphaloidea largely follow the patterns as in the Vetigastropoda. But unusual morphological and phylogentic characters suggest a different systematic position and place it in its own clade, the Neomphalina.. The formal placement of Neomphalina within the Gastropoda however remains ambiguous. [6]

Families

Families within the Neomphaloidea include:

A few genera within Neomphaloidea have been unassigned to a family:

See also

The other superfamily of hydrothermal vent limpets is the Lepetodriloidea.

References

  1. ↑ McLean J. H. (8 December 1981). "The Galapagos rift limpet Neomphalus: relevance to understanding the evolution of a major paleozoic-mesozoic radiation". Malacologia 21(1-2): 291-336.
  2. ↑ Chen C.; Linse K.; Copley J. T.; Rogers A.D. (2015). "The ‘scaly-foot gastropod’: a new genus and species of hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae) from the Indian Ocean". Journal of Molluscan Studies. 81: 322–334. doi:10.1093/mollus/eyv013.
  3. 1 2 3 4 Bouchet P.; Rocroi J.-P.; Frýda J.; Hausdorf B.; Ponder W.; Valdés Á. & Warén A. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology. Hackenheim, Germany: ConchBooks. 47 (1-2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
  4. ↑ Ponder W. F. & Lindberg D. R. (1997). Zool. J. Linn. Soc. 119: 83–265.
  5. ↑ McArthur A. G. & Koop B. F. (1999). Molecular Phylogenet. Evol. 13: 255–274.
  6. 1 2 Stephanie W. Aktipis & Gonzalo Giribet (2010). "A phylogeny of Vetigastropoda and other “archaeogastropods”: re-organizing old gastropod clades". Invertebrate Biology 129(3): 220-240 doi:10.1111/j.1744-7410.2010.00198.x.
  7. ↑ Bouchet, P. (2016). Helicrenion Warén & Bouchet, 1993. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=536900 on 2017-05-26
  8. ↑ Bouchet, 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
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