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Zachrysiidae
Zachrysiidae is a family of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Sagdoidea.MolluscaBase eds. (2021). MolluscaBase. Zachrysiidae D. G. Robinson, Sei & Rosenberg, 2017. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1057795 on 5 February 2021 It is native to Cuba, though some species have been introduced to Florida, West Indies islands, the Yucatán Peninsula of Mexico and Panama. Description Zachrysiidae have solid and thick shells 16-70 mm in width and pale yellow to orange in colour. The shape is generally globose but depressed and somewhat eccentrically and unevenly coiled. The protoconch is 1.5 whorls that are polished and shiny with faint, microscopic, spiral lines. The teleoconch is 4-4.5 whorls and varies in sculpture from sharply and finely ribbed to almost smooth. There may be a microsculpture of closely crowded granules and these are sometimes arranged in i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zachrysia Trinitaria
''Zachrysia'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Zachrysiidae. Species Species within the genus ''Zachrysia'' are majorly Cuban endemics and include: * '' Zachrysia auricoma'' (Férussac, 1821) *'' Zachrysia baracoensis'' (Gutiérrez in Pfeiffer, 1858) *'' Zachrysia bayamensis'' (L. Pfeiffer, 1854) *'' Zachrysia emarginata'' (Gundlach in Pfeiffer,. 1859) *'' Zachrysia flavicoma'' Pilsbry, 1929 * † '' Zachrysia fraterna'' Ross, 1988 *'' Zachrysia gibarana'' Pilsbry, 1929 *'' Zachrysia guanensis'' (Poey, 1857) *'' Zachrysia guantanamensis'' (Poey, 1857) *'' Zachrysia gundlachiana'' Pilsbry, 1929 *'' Zachrysia petitiana'' (d'Orbigny, 1842) *'' Zachrysia proboscidea'' (L. Pfeiffer, 1856) * '' Zachrysia provisoria'' (Pfeiffer, 1858) *'' Zachrysia rangeliana'' (Pfeiffer, 1854) *'' Zachrysia scabrosa'' (Poey, 1854) *'' Zachrysia torrei'' (Henderson, 1916) * '' Zachrysia trinitaria'' (L. Pfeiffer, 1858) References Furth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagdoidea
Sagdoidea is a superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the infraorder Helicoidei of the suborder Helicina.MolluscaBase eds. (2021). MolluscaBase. Sagdoidea Pilsbry, 1895. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=866564 on 2021-02-05 Families * Sagdidae Pilsbry, 1895 * Solaropsidae Solaropsidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant spe ... H. Nordsieck, 1986 * Zachrysiidae D. G. Robinson, Sei & Rosenberg, 2017 References * Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526. Stylomma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zachrysia
''Zachrysia'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Zachrysiidae. Species Species within the genus ''Zachrysia'' are majorly Cuban endemics and include: * '' Zachrysia auricoma'' (Férussac, 1821) *'' Zachrysia baracoensis'' (Gutiérrez in Pfeiffer, 1858) *'' Zachrysia bayamensis'' (L. Pfeiffer, 1854) *'' Zachrysia emarginata'' (Gundlach in Pfeiffer,. 1859) *'' Zachrysia flavicoma'' Pilsbry, 1929 * † '' Zachrysia fraterna'' Ross, 1988 *'' Zachrysia gibarana'' Pilsbry, 1929 *'' Zachrysia guanensis'' (Poey, 1857) *'' Zachrysia guantanamensis'' (Poey, 1857) *'' Zachrysia gundlachiana'' Pilsbry, 1929 *'' Zachrysia petitiana'' (d'Orbigny, 1842) *'' Zachrysia proboscidea'' (L. Pfeiffer, 1856) * '' Zachrysia provisoria'' (Pfeiffer, 1858) *'' Zachrysia rangeliana'' (Pfeiffer, 1854) *'' Zachrysia scabrosa'' (Poey, 1854) *'' Zachrysia torrei'' (Henderson, 1916) * ''Zachrysia trinitaria'' (L. Pfeiffer, 1858) References Further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrestrial Molluscs
Terrestrial molluscs or land molluscs (mollusks) are an ecology, ecological group that includes all molluscs that live on land in contrast to Freshwater mollusc, freshwater and Sea snail, marine molluscs. They probably first occurred in the Carboniferous, arising from freshwater molluscs#Freshwater gastropods, freshwater ones. Characteristics This group includes land snails and land slugs. Loss of the shell has taken place many times in different groups that are not evolutionarily closely related, and land snails and slugs are most often treated together as a single group in specialized malacology, malacological literature.Barker G. M. (ed.) The biology of terrestrial molluscs'. CABI Publishing, 2001, 558 pp. .Barker G. M. (ed.) Natural enemies of terrestrial molluscs'. CABI Publishing, 2004, 644 pp. . All terrestrial molluscs belong to the class Gastropoda. However, colonization of the land took place several times during the evolutionary past, and as a result terrestrial mollus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, ostracum, is typically made of calcium carbonate (CaCO3) precipitated into an organic matrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicoidea
Helicoidea is a Taxonomy (biology), taxonomic Taxonomic rank, superfamily of air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the order (taxonomy), order Stylommatophora. Taxonomy 2017 taxonomy and latest developments The Bouchet et al. 2017 nomenclator provides an up to date system of Helicoidea. The system is in some parts preliminary, as the authors relied on unpublished (as of 2023) Phylogenomics, phylogenomic study, which did not include all New World taxa. They classified Epiphragmophoridae, Helminthoglyptidae, Humboldtianidae, Monadeniidae and Xanthonychidae (provisionally also Lysinoidae and Echinichidae) as Subfamily, subfamilies of the last taxon, because there are no deep splits between them in the cited unpublished study (see also Koene & Schulenburg 2005). Cepolidae, Labyrinthidae and Thysanophoridae constitute the sister group of the remaining Helicoidea. * Camaenidae Pilsbry, 1895 * Canariellidae Schileyko, 1991 * Cepo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleurodontidae
Pleurodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea. MolluscaBase eds. (2020). MolluscaBase. Pleurodontidae Ihering, 1912. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=870597 on 2021-01-03 This family is classified within the order Stylommatophora within the superorder Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). This family has no subfamilies. The family Pleurodontidae includes some American taxa that used to be included within the Australasian family Camaenidae, a taxon whose monophyly was in doubt. Anatomy Pleurodontids are defined by a missing diverticulum. The stimulatory organ is equally missing. Genera Genera within this family include: * ''Coloniconcha'' Pilsbry, 1933 - with the only species '' Coloniconcha prima'' Pilsbry, 1933 * '' Dentellaria'' Schumacher, 1817 - either separate genus (w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovotestis
An ovotestis is a gonad with both Testicle, testicular and Ovary, ovarian aspects. In humans, ovotestes are an infrequent anatomical variation associated with gonadal dysgenesis. The only mammals where ovotestes are not characteristic of an infrequent variation are mole (animal), moles, wherein females possess ovotestes along with a masculinized clitoris. These ovotestes in nonpregnant female moles secrete eight times as much testosterone as the ovotestes of pregnant moles. In invertebrates that are normally hermaphroditic, such as most gastropods (snails and slugs) in the clade Eupulmonata, an ovotestis is a common feature of the reproductive anatomy. In mice, ovotestes are structured such that the central region is testicular tissue while the poles both contain ovarian tissue. Experiments involving the SOX9 gene, which is initiated by the Testis-determining factor, SRY region of the Y chromosome, have shown the gene's requirement for testicular differentiation from the presence of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umbilicus (mollusc)
The umbilicus of a coiled mollusc shell is the axially aligned, hollow cone-shaped space within its whorl (mollusc), whorls. The term ''umbilicus'' is often used in descriptions of gastropoda, gastropod shells, i.e. it is a feature present on the ventral (or under) side of many (but not all) snail shells, including some species of sea snails, land snails, and freshwater snails. The word is also applied to the depressed central area on the planispiral coiled shells of ''Nautilus'' species and fossil ammonites. (These are not gastropods, but shelled cephalopods.) In gastropods The spirally coiled whorls of gastropod shells frequently connect to each other by their inner sides, during the natural course of its formation. This results in a more or less solid central axial pillar, known as the columella (mollusc), columella. The more intimate the contact between the concave side of the whorls is, the more solid the columella becomes. On the other hand, if this connection is less inten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 (bivalve), 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 (mollusc), apex of the shell is called an orifice, and in the Haliotidae (abalone) where the row of respiratory openings in the shell are also called orifices. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleoconch
The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, ostracum, is typically made of calcium carbonate (CaCO3) precipitated into an organic matrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protoconch
A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called "nucleus". The protoconch may sometimes consist of several whorl (mollusc), whorls, but when this is the case, the whorls show no growth lines. The whorls of the adult shell, which are formed after the protoconch, are known as the teleoconch. The teleoconch starts forming when the larval gastropod becomes a juvenile, and the protoconch may dissolve. Quite often there is a visible line of demarcation where the protoconch ends and the teleoconch begins, and there may be a noticeable change in Sculpture (mollusc), sculpture, or a sudden appearance of sculpture at that point. In some gastropod groups (such as the Architectonicidae), the teleoconch whorls spiral in the opposite direction to the protoconch. In those cases, the shell is called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
