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Holospiridae
Holospiridae is a family of gastropods belonging to the superfamily Urocoptoidea of the order Stylommatophora. MolluscaBase eds. (2021). MolluscaBase. Holospiridae Pilsbry, 1946. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=994730 on 2021-06-17 Genera: * '' Bostrichocentrum'' Strebel & Pfeffer, 1879 * '' Coelostemma'' Dall, 1895 * '' Haplocion'' Pilsbry, 1902 * '' Hendersoniella'' Dall, 1905 * '' Holospira'' von Martens, 1860 * ''Metastoma The metastoma is a ventral single plate located in the opisthosoma of non-arachnid dekatriatan chelicerates such as eurypterids, chasmataspidids and the genus ''Houia''. The metastoma located between the base of 6th prosomal appendage pair and m ...'' Strebel & Pfeffer, 1879 ;Genera brought into synonymy: * ''Acera'' Albers, 1850: synonym of ''Holospira'' E. von Martens, 1860 * ''Distomospira'' Dall, 1895: synonym of ''Holospira'' E. von Martens, 1860 * ''Eudistemma'' Dall, 189 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urocoptoidea
Urocoptoidea is a Superfamily (zoology), superfamily of land snails, gastropods in the suborder Helicina (suborder), Helicina. MolluscaBase eds. (2020). MolluscaBase. Urocoptoidea Pilsbry, 1898 (1868). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=932607 on 2020-08-25 Families In 2005, according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), taxonomy of the Gastropoda by Bouchet & Rocroi, the families Urocoptidae and Cerionidae were classified within the superfamily Orthalicoidea . In 2008, the superfamily Urocoptoidea was established by the malacologist Uit de Weerd, based on molecular phylogeny research.Uit de Weerd D. R. (2008). "Delimitation and phylogenetics of the highly diverse land snail family Urocoptidae (Gastropoda, Pulmonata) based on 28S rRNA sequence data: A reunion with ''Cerion''". ''Journal of Molluscan Studies'' 74: 317-329. . In 2012, ThompsonThompson F. G. (2012). "The land snail g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropods
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and reproduc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stylommatophora
Stylommatophora is an orderPhilippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong. 2017. Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families'. Malacologia, 61(1-2): 1-526. of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs. The two strong synapomorphies of Stylommatophora are a long pedal gland placed beneath a membrane and two pairs of retractile tentacles (Dayrat & Tillier). Several families in this group contain species of snails and slugs that create love darts. Stylommatophora are known from the Cretaceous period up to the present day. Pek I., Vašíček Z., Roček Z., Hajn. V. & Mikuláš R. (1996). ''Základy zoopaleontologie''. Olomouc, 264 pp., . 2005 taxonomy According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005) based on ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holospira
''Holospira'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Urocoptidae. ''Holospira'' is the type genus of the subfamily 'Holospirinae Pilsbry, 1946'. Etymology ''Holos'' (ὅλος) from Ancient Greek means "‘whole’" or "‘entire’" and ''spira'' (spīra) from Latin means spire. Shell description The shell is small, cylindric, terminating above in a conic spire, retaining all the whorls, rimate or perforate. The shell has 11-21 whorls, which are closely coiled. The first 1½ of whorls are smooth. The rest of whorls are smooth, striate or ribbed. The suture is superficial. Body whorl is more or less built forward. The aperture is small, obliquely pear-shaped, rounded or oval. The peristome is expanded or reflected, continuous and usually free throughout. The columella (internal column) is hollow, variously sculptured or smooth. Anatomy The foot is small, narrow for its length. The lung is long and narrow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metastoma
The metastoma is a ventral single plate located in the opisthosoma of non-arachnid dekatriatan chelicerates such as eurypterids, chasmataspidids and the genus ''Houia''. The metastoma located between the base of 6th prosomal appendage pair and may had functioned as part of the animal's feeding structures. It most likely represented a fused appendage pair originated from somite 7 (first opisthosomal segment), thus homologous to the chilaria of horseshoe crab and 4th walking leg pair of sea spider. In eurypterids, the plate was typically cordate (heart-shaped) in shape, though differed in shape in some genera, such as ''Megalograptus ''Megalograptus'' is a genus of eurypterid, an extinct group of aquatic arthropods. Fossils of ''Megalograptus'' have been recovered in deposits of Katian (Late Ordovician) age in North America. The genus contains five species: ''M. alveolatu ...''. References Chelicerate anatomy Dekatriata {{Chelicerata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
