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Velainellidae
Velainellidae is a very small Taxonomy (biology), taxonomic family of fossil sea snails, marine (ocean), marine gastropod mollusks in the superfamily Trochoidea (superfamily), Trochoidea, the top snails, turban snails and their allies. Genera This family contains only one genus: the Eocene genus ''Velainella'', named by Vasseur 1880 and found in France. Description ''Velainella'' has a long, narrow, almost straight-side shell with a smooth-lipped oval aperture. Taxonomy changes Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), Bouchet & Rocroi, 2005 included the Velainellidae in the vetigastropod superfamily Trochoidea (superfamily), Trochoidea, leaving the rank of the Vetigastropoda undecided. Previously W. F. Ponder and A. Warén 1988 put the Velainellidae in the Loxonematoidea (Koken 1889) a superfamily in the Mesogastropoda, Earlier, J. B. Knight, et al., 1960 in the Treatise on Invertebrate Paleontology, Treatise included the Velainellidae, with ''Vellainella'', in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trochoidea (superfamily)
Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum.Gofas, S. (2013). Trochoidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=156489 on 2013-06-29 Species within this superfamily have nacre as the inner shell layer. The families within this superfamily include the Trochidae, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species. This taxon is ''not'' the same as a pulmonate land snail genus which is spelled the same way: ''Trochoidea'' (genus). Taxonomy 2005 taxonomy This superfamily consisted of nine following families (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005): * Trochidae Rafinesque, 1815 * Calliostomatidae Thiele, 1924 (1847) * † Elasmonematidae Knight, 1956 * † Eucochlidae Bandel, 2002 * † Microdomatidae Wenz, 1938 * † Proconulidae Cox, 1960 * Solar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |