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Rathbunaster
''Rathbunaster'' is a monospecific genus of sea stars belonging to the family Asteriidae.Mah, C.L. (2022). World Asteroidea Database. Rathbunaster Fisher, 1906. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=254843 on 2022-04-25 The genus name was given by Fisher as a honorific of the starfish biologist Richard Rathbun of the Smithsonian Institution. He originally ranged this genus under the family Pycnopididae, synonymous with Asteriidae. ''Rathbunaster californicus''Fisher, 1906, common name California sun star, is a sea star belonging to the phylum Echinodermata and the class Asteroidea. It has a maximum size of about 45 centimeters in diameter. The average weight of the star is 35 g, lives between sixty and a thousand meters in-depth, and lives on the muddy benthic substrate. The surface of the star contains many spikes containing pincers. When something swims and lands on top of the California sun star, those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteriidae
The Asteriidae are a diverse family of Asteroidea (sea stars) in the order Forcipulatida. It is one of three families in the order Forcipulatida. Genera The World Register of Marine Species lists these genera within the family Asteriidae (in a field of 6 families): * '' Adelasterias'' Verrill, 1914 * ''Anasterias'' Perrier, 1875 * '' Aphanasterias'' Fisher, 1923 * '' Aphelasterias'' Fisher, 1923 * '' Asterias'' Linnaeus, 1758 * ''Astrometis'' Fisher, 1923 * ''Astrostole'' Fisher, 1923 * '' Caimanaster'' A.M. Clark, 1962 * '' Calasterias'' Hayashi, 1975 * ''Coronaster'' Perrier, 1885 * '' Coscinasterias'' Verrill, 1867 * '' Cryptasterias'' Verrill, 1914 * ''Diplasterias'' Perrier, 1891 * '' Distolasterias'' Perrier, 1896 * '' Evasterias'' Verrill, 1914 * '' Icasterias'' Fisher, 1923 * '' Kenrickaster'' A.M. Clark, 1962 * ''Leptasterias'' Verrill, 1866 * '' Lethasterias'' Fisher, 1923 * '' Lysasterias'' Fisher, 1908 * '' Lysastrosoma'' Fisher, 1922 * ''Marthast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteriidae
The Asteriidae are a diverse family of Asteroidea (sea stars) in the order Forcipulatida. It is one of three families in the order Forcipulatida. Genera The World Register of Marine Species lists these genera within the family Asteriidae (in a field of 6 families): * '' Adelasterias'' Verrill, 1914 * '' Anasterias'' Perrier, 1875 * '' Aphanasterias'' Fisher, 1923 * '' Aphelasterias'' Fisher, 1923 * ''Asterias'' Linnaeus, 1758 * '' Astrometis'' Fisher, 1923 * '' Astrostole'' Fisher, 1923 * '' Caimanaster'' A.M. Clark, 1962 * '' Calasterias'' Hayashi, 1975 * '' Coronaster'' Perrier, 1885 * ''Coscinasterias'' Verrill, 1867 * '' Cryptasterias'' Verrill, 1914 * '' Diplasterias'' Perrier, 1891 * '' Distolasterias'' Perrier, 1896 * '' Evasterias'' Verrill, 1914 * '' Icasterias'' Fisher, 1923 * '' Kenrickaster'' A.M. Clark, 1962 * ''Leptasterias'' Verrill, 1866 * '' Lethasterias'' Fisher, 1923 * '' Lysasterias'' Fisher, 1908 * '' Marthasterias'' Jullien, 1878 * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Rathbun
Richard Rathbun (January 25, 1852 – July 16, 1918) was an American biologist and administrator at the Smithsonian Institution. Biography Richard Rathbun was born in Buffalo, New York, to Charles Rathbun and his wife Marey (née Furey). He was schooled in Buffalo before joining his father's quarrying company, Whitmore and Rathbun, for four years. He was fascinated by fossils, and soon amassed a large collection. When he offered it to the Buffalo Society of Natural History, they decided to appoint him curator, and this marked the beginning of Richard's scientific career. In 1871, Rathbun entered Cornell University, going on to be an assistant in zoology at the Boston Society of Natural History two years later. In 1874 and 1875, he spend the summer assisting the work of the United States Fish Commission, a division of the Smithsonian Institution. He was appointed the official geologist of an expedition to Brazil to investigate its natural resources. The expedition was cut short af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Institution
The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967. Called "the nation's attic" for its eclectic holdings of 154 million items, the institution's 19 museums, 21 libraries, nine research centers, and zoo include historical and architectural landmarks, mostly located in the District of Columbia. Additional facilities are located in Maryland, New York, and Virginia. More than 200 institutions and museums in 45 states,States without Smithsonian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnopodia
''Pycnopodia helianthoides'', commonly known as the sunflower sea star, is a large sea star found in the northeast Pacific. The only species of its genus, it is among the largest sea stars in the world, with a maximum arm span of . Adult sunflower sea stars usually have 16 to 24 limbs; their color can vary widely. They are predatory, feeding mostly on sea urchins, clams, snails, and other small invertebrates. Although the species had been widely distributed throughout the northeast Pacific, its population has rapidly declined since 2013. The sea star has been on IUCN list of endangered animals since 2021. Description Sunflower sea stars can grow to have an arm span of in diameter. They are the second-biggest sea star in the world, only second to the poorly known deep water '' Midgardia xandaros'', whose arm span is and its body is 2.6 cm (roughly 1 inch) wide, although ''P. helianthoides'' is the largest known echinoderm by mass. Growth of the sea star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brisingidae
The Brisingidae are a family of starfish found only in the deep sea. They inhabit both the Atlantic and Pacific Oceans at abyssal depths, and also occur in the Southern Ocean and around Antarctica at slightly shallower depths. The family was named after Brísingamen, a necklace belonging to Freya from Norse mythology that was stolen by Loki and hidden in the sea. Characteristics Members of this family have a small, Ophiurida-like disc, clearly demarcated from the arms, which number more than five. The disc is approximately circular with a rim of fused plates which gives rigidity. The madreporite is near the margin of the disc. The arms are long and tapering with the ratio of the arm length to the disc radius being greater than 6/1. There is an acute angle between them and they can be shed at the base where they are separated from the disc by a deep groove. After a narrow cylindrical portion, the part of the arms closest to the disc accommodates the gonadal tissues and wid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asterophila Japonica
''Asterophila japonica'' is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. The species is one of three known species within the genus ''Asterophila'', the other congeneric species being '' Asterophila perknasteri'' and '' Asterophila rathbunasteri''.Randall & Heath, 1912. Warén A. & Lewis L.M. (1994) Tho new species of eulimid gastropods endoparasitic in asteroids. The Veliger 37(4):325-335. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=536279 on 2013-02-11.Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). . IX, 526 + cd- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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