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Crysomallon squamiferum.jpg
Two preserved specimens of Crysomallon squamiferum.
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Neomphalina

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.[1]

The superfamily Neomphaloidea was regarded for a long time as belonging within the clade Vetigastropoda. Molecular phylogeny showed however that it belongs in its own clade, the Neomphalina, and that this clade is basal to the Vetigastropoda.[2] The Neomphalina is a monophyletic clade, with uncertain relations among the gastropods.[3] [4]

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


  1. ^ Bouchet, P. (2011). Neomphalina. Accessed through: World Register of Marine Species at on 2012-03-20
  2. ^ W. F. Ponder, D. R. Lindberg, Zool. J. Linn. Soc. 119, 83–265 (1997)
  3. ^ A. G. McArthur, B. F. Koop, Molecular Phylogenet. Evol. 13, 255–274 (1999).
  4. ^ Stephanie W. Aktipis, Gonzalo Giribet (2010), A phylogeny of Vetigastropoda and other “archaeogastropods”: re-organizing old gastropod clades, Invertebrate Biology > Vol 129 Issue 3; p. 220-240

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