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Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc. The term ''aperture'' is used for the main opening in gastropod shells, scaphopod shells, and also for ''Nautilus'' and ammonite shells. The word is not used to describe bivalve shells, where a natural opening between the two shell valves in the closed position is usually called a ''gape''. Scaphopod shells are tubular, and thus they have two openings: a main anterior aperture and a smaller posterior aperture. As well as the aperture, some gastropod shells have additional openings in their shells for respiration; this is the case in some Fissurellidae (keyhole limpets) where the central smaller opening at the apex of the shell is called an orifice, and in the Haliotidae (abalones) where the row of respiratory openings in the shell are also called orifices. In gastropods In some prosobranch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norelona Pyrenaica Shell
''Norelona '' is a monospecific genus of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Elonidae. MolluscaBase eds. (2021). MolluscaBase. Norelona H. Nordsieck, 1986. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=996224 on 2021-10-03 Species * ''Norelona pyrenaica ''Norelona pyrenaica'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Elonidae. ''Norelona pyrenaica'' is the type species of the genus '' Norelona''. Shell description The shell is narrowl ...'' (Draparnaud, 1805) References * Nordsieck, H. (1986). Das System der tertiären Helicoidea Mittel- und Westeuropas (Gastropoda: Stylommatophora). Heldia. 1(4): 109-120. * Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. {{taxonbar, from=Q18591393 Elonidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plait (gastropod)
A plait is an anatomical feature which is present the shells of some snails, or gastropods. This sculpture occurs often in the shells of marine gastropod mollusks in the clade Neogastropoda, but it is also found in some pulmonate land snails. Plaits are folds on the columella (also known as the pillar or axis) at the center of the shell. The columella (meaning little column) is the central structure around which the whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...s of a coiled gastropod shell are coiled. The presence or absence of plaits, and the number of plaits, are characteristics used in the description of many gastropod molluscs, often enabling similar species to be separated and identified correctly. References * Powell A W B, ''New Zealand Mollusca'', William C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Personidae
The Personidae are a family of sea snails, marine gastropod molluscs in the order Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails ( marine species), but also including some freshwater snails ( aquatic species) and land snails (terrestrial species).Bouchet P. & Rocroi J.-P. (Ed.); Frà .... MolluscaBase eds. (2021). MolluscaBase. Personidae Gray, 1854. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=23090 on 2021-12-30 Taxonomy * '' Distorsio'' Röding, 1798 * †'' Kotakaia'' Beu, 1988 * '' Personopsis'' Beu, 1988 ;Synonyms: * ''Calcarella'' Souleyet, 1850: synonym of ''Distorsio'' Röding, 1798 * ''Distorta'' Perry, 1811: synonym of ''Distorsio'' Röding, 1798 * ''Distortrix'' Link, 1807: synonym of ''Distorsio'' Röding, 1798 (objective synonym of Distorsio) * ''Persona'' Montfort, 1810: synonym of ''Distorsio'' Röding, 1798 (objective synonym of Dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dialeuca Conspersula
''Dialeuca'' is a genus of gastropods belonging to the family Cepolidae. The species of this genus are found in Central America. Species: * '' Dialeuca blandiana'' (C. B. Adams, 1850) * ''Dialeuca conspersula ''Dialeuca'' is a genus of gastropods belonging to the family Cepolidae. The species of this genus are found in Central America. Species: * ''Dialeuca blandiana'' (C. B. Adams, 1850) * '' Dialeuca conspersula'' (L. Pfeiffer, 1846) * ''Dialeuca ...'' (L. Pfeiffer, 1846) * '' Dialeuca nemoraloides'' (Adams, 1845) * '' Dialeuca subconica'' (C. B. Adams, 1845) References * Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017. External links Albers, J. C. (1850). Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet. Berlin: Enslin. 262 pp {{Taxonbar, from=Q106797930 Cepolidae (gastropods) Gastropod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyalosagda Arboreoides
''Hyalosagda arboreoides'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Sagdidae. Distribution This species occurs in Jamaica Jamaica (; ) is an island country situated in the Caribbean Sea. Spanning in area, it is the third-largest island of the Greater Antilles and the Caribbean (after Cuba and Hispaniola). Jamaica lies about south of Cuba, and west of His .... Tryon G. W. 1887 ''Manual of conchology; structural and systematic. With illustrations of the species''. Second series: PulmonataVolume 3 Helicidae - Volume I. pag8 References External links * Photos at Sagdidae Gastropods described in 1845 {{Sagdidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melongenidae
The Melongenidae, the crown conchs and their relatives, are a taxonomic family of large to very large marine gastropods in the superfamily Buccinoidea. MolluscaBase eds. (2021). MolluscaBase. Melongenidae Gill, 1871 (1854). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=160182 on 2021-02-27 Taxonomy For a while prior to 2004, the genera ''Busycon'' and ''Busycotypus'' were placed in the Melongenidae. Then, in 2004, based on their digestive systems and on cladistic analysis by Kosyan & Kantor (2004),Kosyan A. R. & Kantor Yu. I. (2004). "Morphology, taxonomic status and relationships of Melongenidae (Gastropoda: Neogastropoda)". ''Ruthenica'' 14(1): 9-36abstract and preview/ref> these two genera were moved to the family Busyconidae within the superfamily Buccinoidea. According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005), the Melongenidae consists of two subfamilies: * Subfamily Melongeninae Gill, 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
