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Octopus Tehuelchus
''Octopus tehuelchus'', commonly known as the Patagonian octopus, is a species of octopus, a marine cephalopod mollusc of the order Octopoda. It is native to shallow waters in the subtropical southwestern Atlantic Ocean. It was first described in 1834 by the French naturalist Alcide d'Orbigny. Description This is a small to medium-sized octopus with a maximum length of about . The mantle is globular with a smooth surface. The head is slightly narrower than the mantle, the eyes are prominent and are surrounded by small granulations. The mantle opening is wide with a long funnel. The neck is constricted and the eight arms are two-thirds to three-quarters of the length of the rest of the animal. The second pair of arms is the shortest and the fourth pair is the longest. The hectocotylus of the male is on the right third arm, and the male also has enlarged suckers. Distribution and habitat ''Octopus tehuelchus'' is native to the subtropical southwestern Atlantic Ocean. Its range e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcide D'Orbigny
Alcide Charles Victor Marie Dessalines d'Orbigny (6 September 1802 – 30 June 1857) was a French naturalist who made major contributions in many areas, including zoology (including malacology), palaeontology, geology, archaeology and anthropology. D'Orbigny was born in Couëron ( Loire-Atlantique), the son of a ship's physician and amateur naturalist. The family moved to La Rochelle in 1820, where his interest in natural history was developed while studying the marine fauna and especially the microscopic creatures that he named "foraminiferans". In Paris he became a disciple of the geologist Pierre Louis Antoine Cordier (1777–1861) and Georges Cuvier. All his life, he would follow the theory of Cuvier and stay opposed to Lamarckism. South American era D'Orbigny travelled on a mission for the Paris Museum, in South America between 1826 and 1833. He visited Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, Argentina, Paraguay, and Brazil, and returned to France with an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermit Crab
Hermit crabs are anomuran decapod crustaceans of the superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit crab, most of which possess an asymmetric abdomen concealed by a snug-fitting shell. Hermit crabs' soft (non-calcified) abdominal exoskeleton means they must occupy shelter produced by other organisms or risk being defenseless. The strong association between hermit crabs and their shelters has significantly influenced their biology. Almost 800 species carry mobile shelters (most often calcified snail shells); this protective mobility contributes to the diversity and multitude of crustaceans found in almost all marine environments. In most species, development involves metamorphosis from symmetric, free-swimming larvae to morphologically asymmetric, benthic-dwelling, shell-seeking crabs. Such physiological and behavioral extremes facilitate a transition to a sheltered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostrea
''Ostrea'' is a genus of edible oysters, marine bivalve mollusks in the family Ostreidae, the oysters. Fossil records This genus is very ancient. It is known in the fossil records from the Permian to the Quaternary (age range: from 259 to 0.0 million years ago). Fossil shells of these molluscs can be found all over the world. Genus ''Ostrea'' includes about 150 extinct species. History At least one species within this genus, ''Ostrea lurida'', has been recovered in archaeological excavations along the Central California coast of the Pacific Ocean, demonstrating it was a marine taxon exploited by the Native American Chumash people as a food source. Species Species in the genus ''Ostrea'' include: * † ''Ostrea albertensis'' Russell & Landes, 1937 * ''Ostrea algoensis'' G. B. Sowerby II, 1871 *''Ostrea angasi'' G.B. Sowerby II, 1871 * ''Ostrea angelica'' Rochebrune, 1895 * † ''Ostrea angusta'' Deshayes, 1824 * † ''Ostrea anomialis'' Lamarck, 1819 * † ''Ostrea antarct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not all oysters are in the superfamily Ostreoidea. Some types of oysters are commonly consumed (cooked or raw), and in some locales are regarded as a delicacy. Some types of pearl oysters are harvested for the pearl produced within the mantle. Windowpane oysters are harvested for their translucent shells, which are used to make various kinds of decorative objects. Etymology The word ''oyster'' comes from Old French , and first appeared in English during the 14th century. The French derived from the Latin , the feminine form of , which is the latinisation of the Ancient Greek () 'oyster'. Compare () 'bone'. Types True oysters True oysters are members of the family Ostreidae. This family includes the edible oysters, which mainly belong t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balanus
''Balanus'' is a genus of barnacles in the family Balanidae of the subphylum Crustacea. This genus is known in the fossil record from the Jurassic to the Quaternary periods (age range: from 189.6 to 0.0 million years ago.). Fossil shells within this genus have been found all over the world. Description The bodies of these organisms are totally enclosed by a stony gray-whitish shell. The size of these shells ranges from 5 millimeters to 10 centimeters. They take the form of a cone consisting of six plates fixed on the rocks. The active animal can only be observed within the water when the shell opens and the barnacles expose two branched appendages (cirri ) regularly hitting the water to catch food. They mainly feed on plankton. Habitat These barnacles can be found in coastal areas at low shallow depth, although they can also be seen living out of the water. They commonly colonize stones, rocks and shells. They are found in abundance on the shells of mussels. Species Species w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barnacle
A barnacle is a type of arthropod constituting the subclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile (nonmobile) and most are suspension feeders, but those in infraclass Rhizocephala are highly specialized parasites on crustaceans. They have four nektonic (active swimming) larval stages. Around 1,000 barnacle species are currently known. The name is Latin, meaning "curl-footed". The study of barnacles is called cirripedology. Description Barnacles are encrusters, attaching themselves temporarily to a hard substrate or a symbiont such as a whale ( whale barnacles), a sea snake ('' Platylepas ophiophila''), or another crustacean, like a crab or a lobster (Rhizocephala). The most common among them, "acorn barnacles" ( Sessilia), are sessile where they grow their shells directly onto the substrate. Peduncul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitar Rostratus
''Pitar'' is a genus of saltwater clams, marine bivalve molluscs in the subfamily Callocardiinae of the family Veneridae, the Venus clams. The genus contains over 60 species. Species * '' Pitar aequinoctialis'' Fischer-Piette, 1969 * '' Pitar affinis'' J. F. Gmelin, 1791 * '' Pitar alabastrum'' (Reeve, 1863) * '' Pitar albidus'' J. F. Gmelin, 1791 * '' Pitar albinus'' (Lamarck, 1818) * '' Pitar arestus'' Dall & Simpson, 1901 * '' Pitar bermudezi'' Macsotay & Campos, 2001 * '' Pitar berryi'' Keen, 1971 * ''Pitar brevispinosus'' Sowerby, 1851 * '' Pitar bucculentus'' (Römer, 1867) * ''Pitar bullatus'' Sowerby, 1851 * '' Pitar chordatum'' Roemer, 1867 * ''Pitar citrinus'' J. B. Lamarck, 1818 * ''Pitar consanguineus'' C. B. Adams, 1852 * ''Pitar coxeni '' Smith, 1885 * ''Pitar curnowae'' Lamprell & Healy, 1997 * ''Pitar dohrni'' (Römer, 1867) * ''Pitar elatus'' (G. B. Sowerby III, 1908) * ''Pitar erubescens'' (Dunker, 1853) * ''Pitar fluctuatus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buccinanops Cochlidium
''Buccinanops cochlidium'', common name the gradated bullia, is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.Rosenberg, G. (2015). Buccinanops cochlidium (Dillwyn, 1817). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532463 on 2016-04-28 Description The size of the shell varies between 30 mm and 112 mm. The ovate-conical shell is elongated, smooth, and shining. It is of a reddish yellow color, scattered over with longitudinal flames of a brown red. A transverse band of the same color surrounds the base of the shell. The spire is elongated and composed of eight whorls slightly angular at their upper part, and very slightly convex. The first whorls are plaited longitudinally . The aperture is ovate, whitish, and strongly emarginated at its base. The outer lip is thin. The columella is smooth and yellowish. This hands ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontocymbiola Magellanica
''Odontocymbiola magellanica'' is a species of sea snail, a marine gastropod mollusk in the family Volutidae ''Volutidae'', common name volutes, are a taxonomic family of predatory sea snails that range in size from 9 mm to over 500 mm. They are marine gastropod mollusks. Most of the species have no operculum. Distribution This family of sea snails ..., the volutes. Description Distribution References Volutidae Gastropods described in 1791 {{Volutidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zidona Dufresnei
''Zidona dufresnei'' is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes. Description This tall-spired species attains a length of 164 mm. Distribution Continental shelf of Uruguay: East coast of South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe .... References Volutidae Gastropods described in 1823 {{Volutidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shark
Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays. However, the term "shark" has also been used to refer to all extinct members of Chondrichthyes with a shark-like morphology, such as hybodonts and xenacanths. The oldest modern sharks are known from the Early Jurassic. They range in size from the small dwarf lanternshark (''Etmopterus perryi''), a deep sea species that is only in length, to the whale shark (''Rhincodon typus''), the largest fish in the world, which reaches approximately in length. Sharks are found in all seas and are common to depths up to . They generally do not live in freshwater, although there are a few known exceptions, such as the bull shark and the river shark, which can be found in both seawater and fresh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
