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Microdrillia
''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 Serratula
''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 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 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 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 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 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] |
Microdrillia Commentica
''Microdrillia commentica'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Microdrillia commentica. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=434401 on 2016-03-15 Description The height of the small shell attains 7 mm. (Original description) The small, solid shell has a narrowly fusiform shape. Its colour is uniform cream. The shell contains nine whorls. The first three are small and smooth, the next ones with a dozen prominent curved radial ribs. On the following whorl, a keel arises from the base, reaches the periphery, and, as a conspicuous median keel, descends to the aperture. The upper whorls have a second conspicuous spiral keel below the suture, between which and the peripheral keel lies the fasciole, a third and fainter keel runs below the median. On the body whorl, there are about a dozen spirals below the main keel. The fasci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microdrillia Circumvertens
''Microdrillia circumvertens'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Microdrillia circumvertens (Melvill & Standen, 1901). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php/aphia.php?p=taxdetails&id=434400 on 2016-03-14 Description The height of the small, milky-white shell attains 6 mm, its width 2.25 mm. It has an ovate-fusiform shape. It contains 8 whorls. The body whorl is bicarinate. A very beautiful spirally carinate and lirate species. The short canal and wide sinus proclaim it rightly placed in ''Microdrillia'' and the acute carinae are peculiar. The aperture is oblique and oblong. The columella contains no plications. Distribution This marine species occurs from the Gulf of Oman to Transkei Transkei (, meaning ''the area beyond he riverKei''), officially the Republic of Transkei ( xh, iRiphabliki yeTranskei), was an unrecognised stat ... [...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 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] |