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Protatlanta
''Atlanta'' is a genus of pelagic marine gastropod molluscs in the family Atlantidae Atlantidae is a family of sea snails, holoplanktonic gastropod molluscs in the clade Littorinimorpha. According to taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the family Atlantidae has no subfamilies. Description The Atlantidae is a .... Species Species in the genus ''Atlanta'' include: * '' Protatlanta souleyeti'' (Smith, 1888) - type species and the only Recent species in the genus ''Protatlanta'' * '' Protatlanta mediterranea'' Issel, 1915 - recent, sometimes is this considered as separate speciesStoch F. (ed.Atlantidae in: CHECKLIST OF THE SPECIES OF THE ITALIAN FAUNA. On-line version 2.0. http://www.faunaitalia.it/checklist/ Last update: December 3, 2003, accessed 20 August 2010. * † '' Protatlanta rotundata'' (Gabb, 1873) References {{Taxonbar, from=Q7251191 Atlantidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protatlanta Rotundata
''Protatlanta rotundata'' is an extinct species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae. Description The width of the shell can reach up to 10 mm. In the largest specimen there are almost two teleoconch whorls that initially attach very high onto the protoconch, with the result that the larval shell seems to be embedded rather obliquely within the younger whorls. The diameter of the teleoconch increases rapidly, the result being a shell that strongly resembles '' Planorbarius'' (but, of course, dextral). The surface of these younger whorls bears flexuous growth lines, and a dense and very fine, somewhat irregular spiral striation, only visible where light reflects on the shell. On the body whorl a distinct peripheral belt is present on which the growth lines are strongly bent backward, indicating a deep sinus in the apertural margin. The larval shell is globular, about as wide as high and has approximately five whorls which attac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protatlanta Souleyeti
''Protatlanta souleyeti'' is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae. ''Protatlanta souleyeti'' is the type species on the genus ''Protatlanta''. It is considered to be the only Recent species on the genus. The specific name ''souleyeti'' is in honor of French malacologist Louis François Auguste Souleyet. Description The maximum recorded shell length is 2 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". '' PLoS ONE'' 5(1): e8776. . Some of the fossil specimens preserve a pinkish colour of the larval shells. The protoconch is naticoid in shape and has approximately 3¼ whorls. Most specimens have two thin spirals above the periphery, visible in apical view, and a third such spiral below the periphery, which separates the base of the protoconch and becomes covered by subsequent whorls. The described ornament can be fairly constant, but some specimens were found in which thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protatlanta Souleyeti
''Protatlanta souleyeti'' is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae. ''Protatlanta souleyeti'' is the type species on the genus ''Protatlanta''. It is considered to be the only Recent species on the genus. The specific name ''souleyeti'' is in honor of French malacologist Louis François Auguste Souleyet. Description The maximum recorded shell length is 2 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". '' PLoS ONE'' 5(1): e8776. . Some of the fossil specimens preserve a pinkish colour of the larval shells. The protoconch is naticoid in shape and has approximately 3¼ whorls. Most specimens have two thin spirals above the periphery, visible in apical view, and a third such spiral below the periphery, which separates the base of the protoconch and becomes covered by subsequent whorls. The described ornament can be fairly constant, but some specimens were found in which thes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protatlanta Mediterranea
''Protatlanta mediterranea'' is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae Atlantidae is a family of sea snails, holoplanktonic gastropod molluscs in the clade Littorinimorpha. According to taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the family Atlantidae has no subfamilies. Description The Atlantidae is a .... Description Distribution References Atlantidae Gastropods described in 1915 {{Atlantidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantidae
Atlantidae is a family of sea snails, holoplanktonic gastropod molluscs in the clade Littorinimorpha. According to taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the family Atlantidae has no subfamilies. Description The Atlantidae is a group of holoplanktonic gastropods, which all demonstrate a strong adaptation to pelagic life, in the form of a lenticular, laterally flattened, aragonitic shell, the surface of which is further enlarged by the presence of a wide, and very thin and fragile, double-walled keel. The apex is on the right side of the shell, the umbilicus on the left. For the living animal the enlargement of the shell’s surface serves ‘to increase stabilization during swimming and sinking’. This phenomenon results in the occurrence of superficially very similar adult shells in separate species, whereas the larval shells may be utterly different. Their body size is microscopic with a shell diameter of less than 1 cm. The foot has evolved into a muscu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterotracheoidea
The Pterotracheoidea is, according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), a taxonomic superfamily of sea snails or sea slugs, marine gastropod molluscs in the clade Littorinimorpha. They are commonly called heteropods or sea elephants. Taxonomy This superfamily comprises four families (classification based on Newman (superfamily Carinarioidea, pp. 804–808. In: Beesley ''et al''., 1998), that is also used by the taxonomy of the Gastropoda by Bouchet & Rocroi (2005): * Family Pterotracheidae Rafinesque, 1814 * Family Atlantidae Rang, 1829 * † Family Bellerophinidae Destombes, 1984 * Family Carinariidae Blainville 1818 Habitat These holoplanktonic snails are found floating or swimming in tropical to subtropical open oceans and seas at a depth of maximum 200 to 300 m Anatomy These snails have adapted themselves to a pelagic living : * a transparent body and shell * the foot has evolved into a swimming fin that produces motion through undu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropoda
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, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caenogastropoda
Caenogastropoda is a taxonomic clade, a large diverse group which are mostly sea snails and other marine gastropod mollusks, but also includes some freshwater snails and some land snails. The clade is the most diverse and ecologically successful of the gastropods. Caenogastropoda contains many families of shelled marine molluscs – including the periwinkles, cowries, wentletraps, moon snails, murexes, cone snails and turrids – and constitutes about 60% of all living gastropods. Biology The Caenogastropoda exhibit torsion, and thus are included in what was previously called the Streptoneura (meaning ''twisted nerves''), also known as Prosobranchia (meaning ''gills forward''). Specifically, they are characterized by having only a single auricle in the heart and a single pair of gill leaflets, and are equivalent to the Monotocardia or Pectinobranchia of older authors. Taxonomy The taxon Caenogastropoda was first established by Leslie Reginald Cox in 1960 as a supero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypsogastropoda
Hypsogastropoda is a clade containing marine gastropods within the clade Caenogastropoda. MolluscaBase eds. (2021). MolluscaBase. Hypsogastropoda. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=411667 on 2022-01-01 Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . . 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278 This clade is considered by the database WoRMS as an alternate representation This clade contains two clades and one informal group: * Clade Littorinimorpha * Informal group Ptenoglossa * Clade Neogastropoda Neogastropoda is an order of sea snails, both freshwater and marine gastropod molluscs. Description The available fossil record of Neogastropoda is relatively complete, and supports ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . . 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278 Previously, the Linnaean taxonomy used in the taxonomy of the Gastropoda by Ponder & Lindberg (1997) ranked like this: subclass Orthogastropoda, superorder Caenogastropoda, order Sorbeoconcha, suborder Hypsogastropoda, infraorder Littorinimorpha. The order Littorinimorpha contains many gastropoda families that were formerly placed in the order Mesogastropoda, as introduced by J. Thiele in his work from 1921. Evidence for this group being monophyletic is scanty. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scripta Geologica
''Scripta Geologica'' is a peer-reviewed scientific journal that publishes on vertebrate and invertebrate palaeontology, palaeobotany/palynology, stratigraphy, petrology, and mineralogy, including gemmology with a focus on systematics. It is published by the Dutch National Museum of Natural History, Naturalis. ''Scripta Geologica'' was established in 1881 as ''Sammlungen des geologischen Reichsmuseums in Leiden'' (1881-1923), changing its title to ''Leidse Geologische Mededelingen'' in 1925 (originally spelled as ''Leidsche Geologische Mededeelingen''). From 1971, the latter title was published in parallel with ''Scripta Geologica'' until they were merged in 1985. Abstracting and indexing ''Scripta Geologica'' is abstracted and indexed in PASCAL, GeoBase, GeoAbstracts and GeoRef __NOTOC__ The GeoRef database is a bibliographic database that indexes scientific literature in the geosciences, including geology. Coverage ranges from 1666 to the present for North American literatu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johan Jacob Tesch
{{disambiguation ...
Johan * Johan (given name) * ''Johan'' (film), a 1921 Swedish film directed by Mauritz Stiller * Johan (band), a Dutch pop-group ** ''Johan'' (album), a 1996 album by the group * Johan Peninsula, Ellesmere Island, Nunavut, Canada * Jo-Han, a manufacturer of plastic scale model kits See also * John (name) John (; ') is a common male given name in the English language of Hebrew origin. The name is the English form of ''Iohannes'' and ''Ioannes'', which are the Latin forms of the Greek name Ioannis (Ιωάννης), originally borne by Hellenized J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
