Details - Systematic revision of the Helicoidea.
Other articles where Stylommatophora is discussed: gastropod: Classification: Superorder Stylommatophora Mantle cavity a pulmonary sac; gonopores with common opening on right side or at most narrowly separated; shell conical to vestigial, heavily to weakly calcified; eyes at tips of upper (usually) tentacles; terrestrial; about 26,800 species. Order Orthurethra Pore of ureter opening into.
Stylommatophora definition is - a suborder of Pulmonata comprising gastropods with the eyes situated at the tips of retractile tentacles and including the common land snails and slugs.
All species that belong to the order Stylommatophora, encompassing most species in the study area, breathe air and lack an operculum to seal off their apertures and to protect themselves from the outside environment (Luchtel and Deyrup-Olsen, 2001). Land mollusca of Norris Dam State Park with notes on Cumberland Plateau and Blue Ridge affinities. Population dynamics and spatial distribution.
Most Stylommatophora are fairly small, averaging less than a centimeter in shell length or width, although the giant African snail Achatina achatina, have shells that reach 27 cm (Barnes 1980 p.340) In terms of diversity, they are the largest clade of gastropods, with some 35,000 species, and from 71 to 92 families, depending on the classification scheme used ( Bieler, 1992; Wade et al.
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Statistics. 235,708 taxon names 180,712 accepted taxon names 6,017 higher taxon names 5,838 accepted higher taxon names 36,162 (sub)genus names.
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The systematic treatment of the taxa and the key are supported by a comprehensive description and discussion of the body plan and organ systems in Stylommatophora that are important in systematics.
