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See text. Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 The class Gastropoda or the gastropods, also previously known as gasteropods, or univalves, and more commonly known as Snails Orthogastropoda is one of two major Taxonomic groupings of snails and slugs an extremely large Subclass within the huge class Gastropoda. Heterobranchia, the heterobranchs, (meaning "different-gilled snails" is a Taxonomic Superorder of sea Snails marine Above the species level close to 400 named taxa are referred to the gastropod superfamily Pyramidelloidea. Pyramidellidae, Common name the pyram family, or pyramid shells, is a voluminous Taxonomic family of mostly small and minute |
Sayellinae is a taxonomic subfamily of minute ectoparasitic sea snails, marine gastropod molluscs, or micromollusks, in the very large family Pyramidellidae, the pyrams and their allies. Taxonomy is the practice and science of classification The word comes from the Greek, taxis (meaning 'order' 'arrangement' and, nomos In Biological classification, family ( Latin Parasitism is a type of symbiotic relationship between Organisms of different Species. The word snail is a Common name that can be used for almost all members of the Molluscan class Gastropoda which have coiled shells in the Marine is an Umbrella term. As an adjective it is usually applicable to things relating to the Sea or Ocean, such as Marine biology, Marine The class Gastropoda or the gastropods, also previously known as gasteropods, or univalves, and more commonly known as Snails Molluscs are animals belonging to the phylum Mollusca. There are around 250000 extant Species within the phylum with an estimated 70000 A micromollusk is a descriptive term for a shelled Mollusk which is extremely small even at full adult size Pyramidellidae, Common name the pyram family, or pyramid shells, is a voluminous Taxonomic family of mostly small and minute
This subfamily is one of eleven recognised in the family Pyramidellidae, according to the taxonomy of Ponder & Lindberg (1997). Pyramidellidae, Common name the pyram family, or pyramid shells, is a voluminous Taxonomic family of mostly small and minute However, in the new taxonomy of Bouchet & Rocroi (2005), this subfamily has been downgraded to the rank of tribe Sayellini Wise, 1996 in the subfamily Pyramidellinae Gray, 1840 . The new Gastropod Taxonomy of Bouchet & Rocroi (2005 (in collaboration with J In Biology, a tribe &mdashor infrafamily&mdashis a Taxonomic rank between family and Genus. Pyramidellinae is a taxonomic Subfamily of minute sea Snails marine Gastropod Mollusks in the family Pyramidellidae
According to Schander, Van Aartsen & Corgen (1999) there are only two genera in this sub-family.
Genera
- Sayella Dall,, 1885 (Type genus)
- Petitilla Wise, 1997
References
- Bouchet, P. William Healey Dall, ( August 21, 1845 - March 27, 1927) was a great American naturalist and a prominent malacologist & Rocroi, J. -P. (2005). "Classification and Nomenclator of Gastropod Families". Malacologia 47 (1-2): 1–397.
- Ponder, W. F. & Lindberg, D. R. (1997). "Towards a phylogeny of gastropod molluscs: an analysis using morphological characters". Zoological Journal of the Linnean Society 119: 88–265.
- Schander, C. , van Aartsen, J. J. , Corgan, J. C. (1999). "Families and genera of the Pyramidelloidea (Mollusca: Gastropoda)". Bollettino Malacologico 34 (9-12): 145–166.
- Wise, J. B. (1996). "Morphology and Phylogenetic relationships of certain pyramidellid taxa (Heterobranchia)". Malacologia 37 (2): 443–511.
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This gastropod-related article is a stub. The class Gastropoda or the gastropods, also previously known as gasteropods, or univalves, and more commonly known as Snails You can help Wikipedia by expanding it. |
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