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Myxostoma
''Myxostoma'' is a genus of land snails with a gill and an operculum, terrestrial gastropod mollusks in the subfamily Cyclophorinae of the family Cyclophoridae. Species Species within the genus ''Myxostoma'' include: * '' Myxostoma boucheti'' Thach, 2021 * '' Myxostoma lychnus'' (Morelet, 1862) * '' Myxostoma messageri'' Bavay & Dautzenberg, 1904 * '' Myxostoma paradoxum'' Dautzenberg & H. Fischer, 1908 * '' Myxostoma petiverianum'' (Wood, 1828) ;Synonyms: * ''Myxostoma aubryanum'' Heude, 1885: synonym of '' Ptychopoma aubryanum'' (Heude, 1885) (original combination) * ''Myxostoma aureum'' Heude, 1885: synonym of '' Pterocyclos aureus'' (Heude, 1885) (original combination) * ''Myxostoma delavayanum'' Heude, 1888: synonym of '' Ptychopoma delavayanum'' (Heude, 1888) (original combination) * ''Myxostoma expoliatum'' Heude, 1885: synonym of '' Ptychopoma expoliatum'' (Heude, 1885) (original combination) * ''Myxostoma humile'' Heude, 1885: synonym of '' Ptychopoma humile'' (Heu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclophoridae
Cyclophoridae is a taxonomic family of small to large tropical land snails with an operculum, terrestrial gastropod mollusks in the order Architaenioglossa belonging to the subclass Caenogastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). This diverse family with many species is now limited to the representatives in the tropics and subtropics of the Old and New World. Their fossil history dates back through the Early Tertiary to the Cenomanian age of the Cretaceous. Description The dextral shells are mostly of small and rarely medium size. The form of the shell varies from discoidal to turbinate. The round aperture is often modified, sometimes with an incision or a constriction. The last whorl can sometimes be disconnected and then extends strongly from the winding plane. The operculum is generally circular, which can be retracted deeply into the shell. Its form is multispiral and can be calcified or lacking calcareous overlay. The oute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
