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Diloma
''Diloma'' is a genus of medium-sized sea snails, marine gastropod mollusks in the family Trochidae, the top snails.Bouchet, P. (2010). Diloma Philippi, 1845. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=391149 on 2011-07-02 There is also a genus ''Diloma'', F.H.Wind & P.Cepek, 1979 a genus of phytoplankton in the class Prymnesiophyceae Description The solid shell is imperforate and depressed globose. It is slate-colored or black, sometimes (especially if worn) reddish or brownish. The conic spire is short. The apex is acute, usually reddish. The sutures are linear. The five whorls are slightly convex, rapidly increasing and spirally obsoletely striate. The body whorl is usually depressed or subconcave below the suture. The base of the shell is rounded, eroded and iridescent in front of the aperture. The aperture is huge, oblique iridescent. The outer lip is rather thin, not black-margined within; but bordered by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diloma Subrostrata
''Diloma subrostratum'', common name the mudflat top shell, is a species of small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Marshall, B.; Bouchet, P. (2016). Diloma subrostratum (Gray, 1835). In: MolluscaBase (2016). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546863 on 2016-11-26 Description The length of the adult shell of this species varies between 11 mm and 32 mm. The solid, conical shell is suborbicular. It is often more or less black, with close wavy longitudinal yellow lines. The spire is short with five whorls. The last whorl is large, rounded, with its hinder part with three to six spiral keels. The axis is imperforated. The inside of the aperture is smooth and silvery. Distribution This common estuarine species is endemic to New Zealand, occurring in the North and South Islands, and in Stewart Island Stewart Island ( mi, Rakiura, ' glowing skies', off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diloma Zelandica
''Diloma zelandicum'' is a species of sea snail, a marine (ocean), marine gastropod mollusc in the family (biology), family Trochidae, the top snails or top shells.Bouchet, P. (2010). Diloma zelandicum(Quoy & Gaimard, 1834). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546852 on 2011-07-03 Description The height of the shell attains 20 mm, its diameter 25 mm. The imperforate shell is depressed and has an orbiculate-conoidal shape. The six Whorl (mollusc), whorls are separated by impressed Suture (anatomy), sutures. The whorls are slightly convex, greenish-black and shining. They are spirally sulcate, the sulci about 5 on the penultimate whorl. The body whorl is much dilated, slightly depressed above, rounded in the middle, very obliquely striate, obsoletely transversely sulcate, slightly convex beneath. The Aperture (mollusc), aperture is subrhomboidal and lirate within. The acute Lip (gastropod), lip is gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diloma Aethiops
''Diloma aethiops'', whose common names include scorched monodont, spotted black topshell, and in the Māori language pūpū, pūpū-mai, or māihi is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, subfamily Monodontinae.Bouchet, P. (2013). Diloma aethiops (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546856 on 2014-03-17 Description The size of the shell varies between 15 mm and 30 mm. The thick, solid, imperforate shell has a depressed conical shape. It is blackish, dotted upon the ribs with yellow or white. The conic spire is more or less depressed with an acute apex. The five whorls are spirally strongly ridged. The ridges are nodulous and number three on the penultimate whorl. The interstices are spirally striate. The body whorl is depressed, angulate at the periphery, and concentrically lirate below. The lirae are coarsely granulose, about 5 in number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diloma Concamerata
''Diloma concameratum'', common name the speckled periwinkle, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Bouchet, P. (2012). ''Diloma concameratum'' (Wood, 1828). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546858 on 2012-11-23 Description The height of the shell varies between 15 mm and 27 mm, the diameter between 23 mm and 25 mm. The very thick and solid, imperforate shell has a globose-conical shape and is generally rather depressed. Its color is yellow and black, tessellated or longitudinally striped, sometimes the black, sometimes the yellow predominating. The spire is a very short cone. The apex is usually perfect and acute, often ruddy. The five whorls are slightly convex. The increase very rapidly in size. They are spirally strongly costate, the ridges 13 or 14 in number on the last whorl . The body whorl slightly descends at the apertur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diloma Radula
''Diloma radula'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Bouchet, P. (2012). ''Diloma radula'' (Philippi, 1849). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546853 on 2012-11-23 Description The size of the shell varies between 5 mm and 12 mm. The imperforate, small, thick and solid shell has a globose-conic shape. It is blackish and unicolored. The conical spire is elevated or rather depressed. The acute apex is flesh colored. The five whorls are slightly convex. They are spirally encircled by regularly granose subequal lirae. These number about 6 on the penultimate whorl, 11 to 13 on the last whorl. The body whorl is globose, convex below and has a rounded periphery. The aperture is rounded. The outer lip is slightly crenated by the spiral ribs, dark-margined, and beveled to an edge. It is thickened by a heavy white rim inside, which is slightly n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diloma Samoaense
''Diloma Samoaense'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. Diloma Samoaense got its name from the Samoan islands where it first originated Description The size of the shell varies between 8 mm and 11 mm. Distribution This marine species occurs off Tutuila Tutuila is the main island of American Samoa (and its largest), and is part of the archipelago of Samoan Islands. It is the third largest island in the Samoan Islands chain of the Central Pacific. It is located roughly northeast of Brisbane, Au ..., the largest and the main island of American Samoa in the archipelago of Samoan Islands. References External links * samoaense Fauna of American Samoa Tutuila Gastropods described in 2003 {{Trochidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Friedrich Gmelin
, fields = , workplaces = University of GöttingenUniversity of Tübingen , alma_mater = University of Tübingen , doctoral_advisor = Philipp Friedrich GmelinFerdinand Christoph Oetinger , academic_advisors = , doctoral_students = Georg Friedrich HildebrandtFriedrich StromeyerCarl Friedrich KielmeyerWilhelm August LampadiusVasily Severgin , notable_students = , known_for = Textbooks on chemistry, pharmaceutical science, mineralogy, and botany , author_abbrev_bot = J.F.Gmel. , author_abbrev_zoo = Gmelin , influences = Carl Linnaeus , influenced = , relatives = Leopold Gmelin (son) , awards = Johann Friedrich Gmelin (8 August 1748 – 1 November 1804) was a German naturalist, botanist, entomologist, herpetologist, and malacologist. Education Johann Friedrich Gmelin was born as the eldest son of Philipp Friedrich Gmelin in 1748 in Tübingen. He studied medicine under his father at University of Tübingen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogram
A phylogenetic tree (also phylogeny or evolutionary tree Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA.) is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics. All life on Earth is part of a single phylogenetic tree, indicating common ancestry. In a ''rooted'' phylogenetic tree, each node with descendants represents the inferred most recent common ancestor of those descendants, and the edge lengths in some trees may be interpreted as time estimates. Each node is called a taxonomic unit. Internal nodes are generally called hypothetical taxonomic units, as they cannot be directly observed. Trees are useful in fields of biology such as bioinformatics, systematics, and phylogenetics. ''Unrooted'' trees illustrate only the relatedness of the leaf nodes and do not require the ancestral root to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north toward the East China Sea, Philippine Sea, and Taiwan in the south. Japan is a part of the Ring of Fire, and spans Japanese archipelago, an archipelago of List of islands of Japan, 6852 islands covering ; the five main islands are Hokkaido, Honshu (the "mainland"), Shikoku, Kyushu, and Okinawa Island, Okinawa. Tokyo is the Capital of Japan, nation's capital and largest city, followed by Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kobe, and Kyoto. Japan is the List of countries and dependencies by population, eleventh most populous country in the world, as well as one of the List of countries and dependencies by population density, most densely populated and Urbanization by country, urbanized. About three-fourths of Geography of Japan, the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indo-Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the seas connecting the two in the general area of Indonesia. It does not include the temperate and polar regions of the Indian and Pacific oceans, nor the Tropical Eastern Pacific, along the Pacific coast of the Americas, which is also a distinct marine realm. The term is especially useful in marine biology, ichthyology, and similar fields, since many marine habitats are continuously connected from Madagascar to Japan and Oceania, and a number of species occur over that range, but are not found in the Atlantic Ocean. The region has an exceptionally high species richness, with the world's highest species richness being found in at its heart in the Coral Triangle, and a remarkable gradient of decreasing species richness radiating outward in al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
