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Odostomiinae
Odostomia pallida, O. conoidea, O. conspicua, O. truncatula
Odostomia pallida, O. conoidea, O. conspicua, O. truncatula
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Orthogastropoda
Order: Heterostropha
Superfamily: Pyramidelloidea
Family: Pyramidellidae
Subfamily: Odostomiinae
P. 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. 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 Pelseneer, 1928
Genera

See text.

Odostomiinae, Odostomia snails and their allies, is a taxonomic subfamily of minute parasitic sea snails. 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 These are marine heterobranch gastropod mollusks, or micromollusks, in the family Pyramidellidae. 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 Heterobranchia, the heterobranchs, (meaning "different-gilled snails" is a Taxonomic Superorder of sea Snails 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

Contents

Systematics

The subfamily Odostomiinae includes the tribe Liostomini Schander, Halanych, Dahlgren & Sundberg, 2003 , al name given to those genera which have an intorted protoconch. Odostomiinae, Odostomia snails and their allies is a Taxonomic Subfamily of minute Parasitic sea Snails These are marine A protoconch (meaning first or earliest or original shell is an Embryonic or Larval shell of some classes of Molluscs e The rest of the genera however do not form a single monophyletic taxon. A clade is a taxonomic group comprising a single Common ancestor and all the descendants of that ancestor

This is one of eleven recognised subfamilies of the very voluminous gastropod family Pyramidellidae (according to the taxonomy of Ponder & Lindberg 1997): Odostomiinae, Turbonillinae, Chrysallidinae, Cingulininae, Cyclostremellinae, Sayellinae, Syrnolinae, Eulimellinae, Pyramidellinae, Odostomellinae and Tiberiinae. The class Gastropoda or the gastropods, also previously known as gasteropods, or univalves, and more commonly known as Snails Pyramidellidae, Common name the pyram family, or pyramid shells, is a voluminous Taxonomic family of mostly small and minute Turbonillinae is a Subfamily of mostly minute parasitic sea Snails marine Gastropod Molluscs in the family Pyramidellidae Chrysallidinae is a Taxonomic group of very small sea Snails one of eleven recognized Subfamilies of the Gastropod family Pyramidellidae Cingulininae is a Taxonomic Subfamily of very small sea Snails, marine Gastropod Mollusks It is one of eleven recognised Cyclostremellinae is a Subfamily, a Taxonomic grouping of minute sea Snails marine Gastropod Mollusks or Micromollusks Sayellinae is a Taxonomic Subfamily of minute ectoparasitic sea Snails marine Gastropod Molluscs or Syrnolininae is a Subfamily of minute parasitic sea Snails marine Heterobranch Gastropod Molluscs in the Eulimellinae is a Subfamily of minute sea Snails marine Gastropod Molluscs in the family Pyramidellidae, the pyrams Pyramidellinae is a taxonomic Subfamily of minute sea Snails marine Gastropod Mollusks in the family Pyramidellidae Odostomellinae is a Taxonomic Subfamily of minute sea Snails marine Gastropod Molluscs within the family Pyramidellidae Tiberiinae is a Subfamily of minute parasitic sea Snails marine Gastropod Molluscs in the family Pyramidellidae

However, in the taxonomy of Bouchet & Rocroi (2005), this subfamily also comprises the subfamilies Chrysallidinae, Cyclostremellinae and Odostomellinae, that they have downgraded to the rank of tribe. The new Gastropod Taxonomy of Bouchet & Rocroi (2005 (in collaboration with J Chrysallidinae is a Taxonomic group of very small sea Snails one of eleven recognized Subfamilies of the Gastropod family Pyramidellidae Cyclostremellinae is a Subfamily, a Taxonomic grouping of minute sea Snails marine Gastropod Mollusks or Micromollusks Odostomellinae is a Taxonomic Subfamily of minute sea Snails marine Gastropod Molluscs within the family Pyramidellidae In Biology, a tribe &mdashor infrafamily&mdashis a Taxonomic rank between family and Genus.

According to Schander, Van Aartsen and Corgan (1999) there are 33 genera in Odostominae with 5 possible additional genera of uncertain status. Cyclostremellinae is a Subfamily, a Taxonomic grouping of minute sea Snails marine Gastropod Mollusks or Micromollusks Odostomellinae is a Taxonomic Subfamily of minute sea Snails marine Gastropod Molluscs within the family Pyramidellidae

Genera in the subfamily Odostomiinae (also classified as tribe Odostomiini)

Additional genera, potentially in the subfamily Odostomiinae

Distribution

This family is found worldwide, From the tropics to the poles. Odetta is a genus of small sea Snail, a marine Gastropod Mollusk in the Subfamily Odostomiinae which is a large William Healey Dall, ( August 21, 1845 - March 27, 1927) was a great American naturalist and a prominent malacologist

Shell description

The shell of these snails has a blunt, heterostrophic protoconch, which is often pointed sideways or wrapped up. A protoconch (meaning first or earliest or original shell is an Embryonic or Larval shell of some classes of Molluscs e Most species in the subfamily have shells which are smaller than 13 mm. The texture of these shells is most often smooth but sometimes sculptured in various forms such as ribs and spirals. Sculpture on a Mollusc shell is whatever natural 3-dimensional ornamentation exists on the outer surface of a shell apart from the basic shape of the shell itself Their color is mostly white, cream or yellowish, sometimes with red or brown lines. The teleoconch is dextrally coiled, but the larval shells are sinistral. A larva ( Latin; plural larvae) is a juvenile form of Animal with indirect development, undergoing Metamorphosis (for example This results in a sinistrally coiled protoconch. The columella has usually one, but sometimes several, spiral folds. The columella (meaning little column is an anatomical feature of a coiled Snail shell or Gastropod shell. A plait is a feature which is present in some Snail shells. This feature occurs often in the shells of marine Gastropod Mollusks The aperture is closed by an operculum. The operculum, meaning little lid (plural opercula or operculums is a corneous or Calcareous structure which exists in some groups of marine freshwater and land

Life habits

The Odostomiinae are ectoparasites, feeding mainly on other molluscs and on annelid worms, but some are known to feed on peanut worms and crustaceans (e. Parasitism is a type of symbiotic relationship between Organisms of different Species. A worm is a common name given to a diverse group of invertebrate animals that have a long soft body and no legs Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting g. Sneli, 1972).

They do not have a radula. The radula is a toothed Chitinous ribbon typically used for scraping cutting and chewing food before it enters the Esophagus. Instead their long proboscis is used to pierce the skin of its prey and suck up its fluids and soft tissues. In general a proboscis (from Greek προ pro "before" and βοσκειν boskein "to feed" also known as probiscus The eyes on the grooved tentacles are situated toward the base of the tentacles. Between the head and the foot, a lobed process called the mentum ( = thin projection) is visible. The mentum refers to a projecting structure near the mouth of any of several animals In Insects the mentum is the distal part of the labium. These molluscs are hermaphrodites. A hermaphrodite is an organism having both male and female reproductive organs

References


Wikiproject Gastropods
 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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