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Vetulonia (gastropod)
''Vetulonia'' is a genus of sea snails, marine gastropod mollusks, unassigned in the superfamily Seguenzioidea.WoRMS (2009). ''Vetulonia'' Dall, 1913. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2009) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137864 on 27 March 2013 Description (Original description) The small shell is turbiniform, thin and umbilicated. It shows radiating ribs crossing spiral threads . The peristome is interrupted by the body whorl . The outer lip in the completely adult is reflected and somewhat thickened. The aperture is unarmed. Dall W. H. (1913). "A new genus of Trochidae". ''The Nautilus ''Nautilus'' is the fictional submarine belonging to Captain Nemo featured in Jules Verne's novels ''Twenty Thousand Leagues Under the Seas'' (1870) and '' The Mysterious Island'' (1875). Description ''Nautilus'' is described by Verne as ...'' 2786 Species Species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Healey Dall
William Healey Dall (August 21, 1845 – March 27, 1927) was an American natural history, naturalist, a prominent Malacology, malacologist, and one of the earliest scientific explorers of interior Alaska. He described many mollusks of the Pacific Northwest of North America, and was for many years America's preeminent authority on living and fossil mollusks. Dall also made substantial contributions to ornithology, zoology, Biological anthropology, physical and cultural anthropology, oceanography, and paleontology. In addition he carried out meteorological observations in Alaska for the Smithsonian Institution. Biography Early life Dall was born in Boston, Massachusetts. His father Charles Henry Appleton Dall, (1816–86), a Unitarianism, Unitarian minister, moved in 1855 to India as a missionary. His family however stayed in Massachusetts, where Dall's mother Caroline Healey Dall, Caroline Wells Healey was a teacher, transcendentalist, reformer, and pioneer feminist. In 1862, D ... [...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] |
Vetulonia Phalcata
''Vetulonia phalcata'' is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.MolluscaBase (2018). ''Vetulonia phalcata'' Warén & Bouchet, 1993. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=758202 on 2018-12-28Warén A. & Bouchet P. (1993) New records, species, genera, and a new family of gastropods from hydrothermal vents and hydrocarbon seeps. Zoologica Scripta 22: 1-90. Distribution This species occurs in North Fiji Basin The North Fiji Basin (NFB) is an oceanic basin west of Fiji in the south-west Pacific Ocean. It is an actively spreading back-arc basin delimited by the Fiji islands to the east, the inactive Vitiaz Trench to the north, the Vanuatu/ New Hebrides .... References phalcata {{Seguenzioidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Paucivaricosa
''Vetulonia paucivaricosa'' is a species of sea snail, a marine gastropod mollusk in the superfamily Seguenzioidea. Description The shell grows to a height of 3.8 mm. (Described as ''Trochus cancellatus'') The rather thin shell forms a depressed cone, opaque, and lustreless. The sculpture consists of oblique laminar ribs in the line of growth, which are crossed by as many but slighter spiral striae. There are about 20 ribs and striae on the body whorl. This sculpture covers the base, but the striae are wanting on the apex. The colour of the shell is pale yellowish-brown. The spire is rather depressed. The shell contains 5-6 convex whorls. The body whorl occupies three fifths of the shell. The apex is regular and compressed. The aperture is more round than oval, angulated above and below on the inner side. The outer lip is somewhat expanded and thickened. The inner lip is nearly straight, attached to the columella below the periphery. The umbilicus is rather narrow, with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
