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Microdrillia Aturensis
''Microdrillia'' is a genus of very small sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P.; Gofas, S. (2015). Microdrillia Casey, 1903. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137821 on 2016-03-14 Description The species in this genus are characterized by a well-developed, multispiral, closely coiled protoconch. One to three of its basal whorls are costulate. The body whorl is wholly devoid of costae but spirally carinate. The retral sinus is relatively large, circularly rounded and close to the suture. The aperture is oblique. The columella is callous, with or without plications. The siphonal canal is short or subobsolete. The following species of this genus are also found as fossils in the age range of 48.6 Ma to 0.781 Ma: ''Microdrillia comatotropis'', ''Microdrillia cossmanni'', ''Microdrillia crispata'', ''Microdrillia harrisi'', ''Microdrillia ouchitae' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Aturensis
''Microdrillia'' is a genus of very small sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P.; Gofas, S. (2015). Microdrillia Casey, 1903. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137821 on 2016-03-14 Description The species in this genus are characterized by a well-developed, multispiral, closely coiled protoconch. One to three of its basal whorls are costulate. The body whorl is wholly devoid of costae but spirally carinate. The retral sinus is relatively large, circularly rounded and close to the suture. The aperture is oblique. The columella is callous, with or without plications. The siphonal canal is short or subobsolete. The following species of this genus are also found as fossils in the age range of 48.6 Ma to 0.781 Ma: ''Microdrillia comatotropis'', ''Microdrillia cossmanni'', ''Microdrillia crispata'', ''Microdrillia harrisi'', ''Microdrillia ouchitae' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Sansibarica
''Microdrillia sansibarica'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet, P. (2011). Borsoniidae. Accessed through: World Register of Marine Species at http://www.marinespecies.o ....WoRMS (2015). Microdrillia sansibarica (Thiele, 1925). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434408 on 2016-03-17 According to Kilburn this species may be a synonym of '' Microdrillia patricia'', but appears to have a more produced base and to lack a basal cord on early whorls. According to Tucker (2004), ''Bela (Acrobela) sansibarica'' Thiele, J., 1925 is a synonym of '' Bela chuni'' Thiele, 1925. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Sagamiensis
''Microdrillia sagamiensis'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Microdrillia sagamiensis Kuroda & Oyama, 1971. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434407 on 2016-03-17 Description Distribution This marine species occurs in the Sagami Bay, Japan, and off the Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ .... References * Kuroda, T.; Habe, T.; Oyama, K. (1971). The Sea Shells of Sagami Bay. Maruzen Co., Tokyo. xix, 1-741 (Japanese text), 1-489 (English text), 1-51 (Index), pls 1–121. External links * Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the Conoidea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Rhomboidales
''Microdrillia rhomboidales'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae. Description The length of the shell attains 9.6 mm. Distribution This marine species occurs off the Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ .... References * Stahlschmidt P., Poppe G.T. & Tagaro S.P. (2018). Descriptions of remarkable new turrid species from the Philippines. Visaya. 5(1): 5-64. page(s): 6, pl. 1 figs 1-3. External links Worms Link {{Commons category Gastropods described in 2018 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Pertinax
''Microdrillia pertinax'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.MolluscaBase eds. (2022). MolluscaBase. Microdrillia pertinax (Hedley, 1922). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1557987 on 2022-12-14 Description The length of the shell attains 4.8 mm. (Original description) The small shell has a cylindro-fusiform shape. It is contracted at the base. Its colour is pale buff, darker on the base and the columella. It contains eight whorls, including the protoconch. The suture is deeply channelled. Sculpture :—On the body whorl there is a prominent keel on the shoulder, followed anteriorly by seven evenly spaced and gradually diminishing spirals. Above the keel is a broad fasciole, crossed by fine crescentic riblets and bounded by a small spiral. On the upper whorls three spirals alone persist, the median being prominent. The aperture is narrow. The sinus is w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Patricia
''Microdrillia patricia'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Microdrillia patricia (Melvill, 1904). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434406 on 2016-03-17 Description The small, claviform shell has a maximum length of 6 mm and a width of 2.1 mm. The protoconch contains at least 6 whorls and the teleoconch 5½ convex whorls. The protoconch has 15–16 axial ribs on its penultimate whorl and 21 to 24 ribs on its last whorl. The collabral threads are strong. On the base of the body whorl one can see 7 to 9 spiral lirae. The aperture is oblong. The siphonal canal is short. Distribution This marine species occurs from the Gulf of Oman to continental shelf of Western Transkei, South Africa References External links * Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Pakaurangia
''Microdrillia pakaurangia'' is an extinct species of sea snail, a marine gastropod mollusk in the family Borsoniidae.Marshall, B. (2015). Microdrillia pakaurangia Powell, 1942 †. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=831643 on 2016-03-16 Description Distribution This extinct marine species is endemic to New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ..., found at Pakaurangi Point, Kaipara References * Powell A.W.B., 1942, ''The New Zealand Recent and fossil Mollusca of the family Turridae : with general notes on turrid nomenclature and systematics''. Bulletin of the Auckland Institute and Museum, 2: 1–188 * Maxwell, P.A. (2009). ''Cenozoic Mollusca''. pp 232–254 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Optima
''Microdrillia optima '' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Microdrillia optima (Thiele, 1925). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434405 on 2016-03-17 Description Distribution This marine species occurs in the Zanzibar Channel. References * Thiele, J. 1925. ''Gastropoda der Deutschen Tiefsee-Expedition, 1898–1899.'' II Wiss. Ergebn. dt. Tiefsee Exped. 'Valdivia' 17(2) 36–382. External links * Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the Conoidea. Journal of Molluscan Studies 77: 273–308 {{DEFAULTSORT:Microdrillia Optima optima Optima is a humanist sans-serif typeface designed by Hermann Zapf and released by the D. Stempel AG foundry, Frankfurt, West Germany in 1958. Though classified as a sans-serif, Optima has a subtle swelling at the terminals sug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Niponica
''Microdrillia niponica'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Microdrillia niponica (E. A. Smith, 1879). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php/aphia.php?p=taxdetails&id=434404 on 2016-03-16 Description The length of the shell attains 7 mm; its width 2 mm.. (Original description) The shell has a shortly fusiform shape and is light brown. It contains 6 ½ whorls. The nucleus consists of 1½ rather large, globose, glassy shining whorls. The four whorls following are strongly keeled around the middle, concave above, with two or three fine spiral lirae, and also concave below the carina, margined at the upper and lower boundaries by a fine thread-like lira arcuately or flexuously elevately striated above the carina, and obliquely but in an opposite direction, beneath it. The body whorl is encircled beneath the principal keel by about ten lir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Meyeri
''Microdrillia'' is a genus of very small sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P.; Gofas, S. (2015). Microdrillia Casey, 1903. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137821 on 2016-03-14 Description The species in this genus are characterized by a well-developed, multispiral, closely coiled protoconch. One to three of its basal whorls are costulate. The body whorl is wholly devoid of costae but spirally carinate. The retral sinus is relatively large, circularly rounded and close to the suture. The aperture is oblique. The columella is callous, with or without plications. The siphonal canal is short or subobsolete. The following species of this genus are also found as fossils in the age range of 48.6 Ma to 0.781 Ma: ''Microdrillia comatotropis'', ''Microdrillia cossmanni'', ''Microdrillia crispata'', ''Microdrillia harrisi'', ''Microdrillia ouchitae' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Fastosa
''Microdrillia fastosa'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.Bouchet, P. (2015). Microdrillia fastosa (Hedley, 1907). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=848229 on 2016-03-15 Description The height of the shell attains 5 mm, its width 1.9 mm. (Original description) The shell is small, rather solid, slender and has a fusiform shape. It contains 8½ whorls of which six form the protoconch. The colour of adult whorls is straw yellow, the protoconch cinnamon brown. Sculpture : running below the suture the adult whorls have a spiral thread which ascends into the protoconch for two whorls. This is followed by a broad concave fasciole, margined in turn by a sharp projecting keel which determines an angle in the contour of the shell. Halfway between the major keel and the suture runs a smaller keel. On the body whorl there are about f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
