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Metacrinus Zonatus
''Metacrinus zonatus'' is a sea lily from the Isselicrinidae family. The scientific name of the species was published in 1908 by Austin Hobart Clark Austin Hobart Clark (December 17, 1880 – October 28, 1954) was an American zoologist. He was born in Wellesley, Massachusetts and died in Washington, D.C. His research covered a wide range of topics including oceanography, marine biology, .... References Isselicrinidae Animals described in 1908 Taxa named by Austin Hobart Clark {{Crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinodermata
An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies or "stone lilies". Adult echinoderms are found on the sea bed at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates. Echinoderms are the largest entirely marine phylum. The first definitive echinoderms appeared near the start of the Cambrian. The echinoderms are important both ecologically and geologically. Ecologically, there are few other groupings so abundant in the biotic desert of the deep sea, as well as shallower oceans. Most echinoderms are able to reproduce asexually and regenerate tissue, organs, and limbs; in some cases, they can undergo complete regeneration from a single limb. Geolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crinoid
Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are members of the largest crinoid order, Comatulida. Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. They live in both shallow water and in depths as great as . Adult crinoids are characterised by having the mouth located on the upper surface. This is surrounded by feeding arms, and is linked to a U-shaped gut, with the anus being located on the oral disc near the mouth. Although the basic echinoderm pattern of fivefold symmetry can be recognised, in most crinoids the five arms are subdivided into ten or more. These have feathery pinnules and are spread wide to gather planktonic particles from the water. At some stage in their lives, most crinoids have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isocrinida
Isocrinida is an order of sea lilies which contains four extant families. Characteristics Members of this order are characterised by having a "heteromorphic" stalk; the stalk consists of a series of nodes with cirri, interspersed by several nodes without cirri. There are additionally a whorl of cirri at the base on which the animal perches. The calyx is a shallow cup consisting of five basals and five radials. Families * Suborder Isocrinina Sieverts-Doreck, 1952 ** family Cainocrinidae Simms, 1988 -- 1 genus (1 species) ** family Isocrinidae Gislén, 1924 -- 3 genus (3 species) ** family Isselicrinidae Klikushkin, 1977 -- 4 genus (18 species) ** family Proisocrinidae Rasmussen, 1978 -- 1 genus (1 species) * Suborder Pentacrinitina Gray, 1842 † ** family Pentacrinitidae Gray, 1842 † Image:Neocrinus decorus.jpg, ''Neocrinus decorus'' (Isocrinidae) Image:Metacrinus rotundus by OpenCage.JPG, ''Metacrinus rotundus'' (Isselicrinidae) Image:Proisocrinus ruberrimus.jpg, ''Proiso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isselicrinidae
Isselicrinidae is one of four extant families of crinoids in the order Isocrinida. Subfamilies and genera * subfamily Diplocrininae Roux, 1981 ** genus ''Cenocrinus'' Thomson, 1864 -- 1 species ** genus ''Endoxocrinus'' AH Clark, 1908 -- 5 species * subfamily Metacrininae Klikushkin, 1977 ** genus ''Metacrinus'' Carpenter, 1882 -- 9 species ** genus '' Saracrinus'' AH Clark, 1923 -- 3 or 4 species Image:Endoxocrinus parrae.jpg, ''Endoxocrinus parrae'' Image:Endoxocrinus.jpg, ''Endoxocrinus sp.'' Image:Metacrinus rotundus by OpenCage.JPG, ''Metacrinus rotundus'' Image:Cenocrinus asterius (Linnaeus, 1767).jpg, ''Cenocrinus asterius'' Image:Endoxocrinus (Diplocrinus) wyvillethomsoni.jpg, ''Endoxocrinus wyvillethomsoni'' Image:Image from page 221 of "Introduction to zoology; a guide to the study of animals, for the use of secondary schools;" (1900) (14598372209).jpg, ''Metacrinus interruptus ''Metacrinus'' is a genus of stalked crinoids in the family Isselicrinidae. Members ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metacrinus
''Metacrinus'' is a genus of stalked crinoids in the family Isselicrinidae. Members of this genus live on hard surfaces in deeper parts of the ocean. The genus has extant species and is also represented in the fossil record. Members of the genus grow to a maximum height of and are found in the eastern Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ... from Japan to Australia. Species The World Register of Marine Species lists the following species in the genus: *'' Metacrinus costatus'' Carpenter, 1884 *'' Metacrinus interruptus'' Carpenter, 1884 *'' Metacrinus levii'' Améziane-Cominardi, 1990 *'' Metacrinus musorstomae'' Roux, 1981 *'' Metacrinus nodosus'' Carpenter, 1884 *'' Metacrinus rotundus'' Carpenter, 1885 *'' Metacrinus serratus'' Döderlein, 1907 *'' M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Articulata (Crinoidea)
Articulata are a subclass or superorder within the class Crinoidea, including the only living crinoid species. They are commonly known as sea lilies (stalked crinoids) or feather stars (unstalked crinoids). The Articulata are differentiated from the extinct subclasses by their lack of an anal plate in the adult stage and the presence of an entoneural system. Articulata first appeared in the fossil record during the Triassic period although other, now extinct crinoid groups, originated in the Ordovician. Characteristics Articulata exhibit pentamerous symmetry. The stalk, which consists of numerous disks held together by ligaments, supports a calyx or cup made of circlets of calcerous plates. In Comatulids, the stalk develops following the larval stage, but the juveniles shed all but the topmost disk to take up a free-living existence. Five often branched arms, which consist of articulated series of ossicles, extend from the oral plate and form the food-capture mechanism of Articula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austin Hobart Clark
Austin Hobart Clark (December 17, 1880 – October 28, 1954) was an American zoologist. He was born in Wellesley, Massachusetts and died in Washington, D.C. His research covered a wide range of topics including oceanography, marine biology, ornithology, and entomology. Biography The son of Theodore Minot Clark and Jeannette French Clark, Clark obtained his Bachelor of Arts at Harvard University in 1903. He had five children with his first wife Mary Wendell Upham, whom he married on March 6, 1906. Mary died in December 1931 and Clark was remarried in 1933 to Leila Gay Forbes. In 1901, Clark organized a scientific expedition to Isla Margarita in Venezuela. From 1903 to 1905, he conducted research in the Antilles. From 1906 to 1907, he led a scientific team aboard the 1882 USS ''Albatross''. In 1908, he took a post at the National Museum of Natural History, which he held until his retirement in 1950. Clark had important and various roles in a number of learned societies: t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1908
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
