|
Isocrinidae
Isocrinidae is one of four extant families of crinoids in the order Isocrinida.Messing, C. (2014)Isocrinidae Gislén, 1924 In: Messing, C. (2014) World List of Crinoidea. Accessed through: World Register of Marine Species Genera *'' Hypalocrinus'' (1 sp.) *'' Neocrinus'' (2 spp.) *†?'' Archaeoisocrinus'' Webster and Jell 1999 *†'' Balanocrinus'' Agassiz 1847 *†'' Chariocrinus'' Hess 1972 *''Metacrinus'' Carpenter 1882 *†subfamily Isocrininae Gislen 1924 **†'' Bakonycrinus'' Stiller 2011 **†'' Chladocrinus'' Agassiz 1836 **†'' Isocrinus'' von Meyer in Agassiz, 1836 **†'' Tyrolecrinus'' References Isocrinida Echinoderm families Extant Middle Jurassic first appearances {{Crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isocrinidae
Isocrinidae is one of four extant families of crinoids in the order Isocrinida.Messing, C. (2014)Isocrinidae Gislén, 1924 In: Messing, C. (2014) World List of Crinoidea. Accessed through: World Register of Marine Species Genera *'' Hypalocrinus'' (1 sp.) *'' Neocrinus'' (2 spp.) *†?'' Archaeoisocrinus'' Webster and Jell 1999 *†'' Balanocrinus'' Agassiz 1847 *†'' Chariocrinus'' Hess 1972 *''Metacrinus'' Carpenter 1882 *†subfamily Isocrininae Gislen 1924 **†'' Bakonycrinus'' Stiller 2011 **†'' Chladocrinus'' Agassiz 1836 **†'' Isocrinus'' von Meyer in Agassiz, 1836 **†'' Tyrolecrinus'' References Isocrinida Echinoderm families Extant Middle Jurassic first appearances {{Crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neocrinus
''Neocrinus'' is a genus of crinoids in the family Isocrinidae, that contains only two known species. Members of this genus appeared on Earth 23.03 million years ago in the Miocene Epoch. Species * '' Neocrinus blakei'' (Carpenter, 1884) * ''Neocrinus decorus ''Neocrinus decorus'' is a species of crinoid in the family Isocrinidae. ''Neocrinus decorus'' has been around for 23.03 million years, and lives at depths from 154 to 1219 meters near the Caribbean of Venezuela, living on hard substrate. Synon ...'' (Thomson, 1864) References Isocrinidae Crinoid genera {{crinoidea-stub ... [...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] |
Hypalocrinus
''Hypalocrinus'' is a monotypic genus of echinoderms belonging to the family Isocrinidae. The only species is ''Hypalocrinus naresianus''. The species is found in Malesia Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. It has been given different definitions. The .... References Isocrinidae Crinoid genera Monotypic echinoderm genera {{crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extant Taxon
Neontology is a part of biology that, in contrast to paleontology, deals with living (or, more generally, '' recent'') organisms. It is the study of extant taxa (singular: extant taxon): taxa (such as species, genera and families) with members still alive, as opposed to (all) being extinct. For example: * The moose (''Alces alces'') is an extant species, and the dodo (''Raphus cucullatus'') is an extinct species. * In the group of molluscs known as the cephalopods, there were approximately 600 extant species and 7,500 extinct species. A taxon can be classified as extinct if it is broadly agreed or certified that no members of the group are still alive. Conversely, an extinct taxon can be reclassified as extant if there are new discoveries of living species ("Lazarus species"), or if previously-known extant species are reclassified as members of the taxon. Most biologists, zoologists, and botanists are in practice neontologists, and the term neontologist is used large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order (biology)
Order ( la, wikt:ordo#Latin, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. An immediately higher rank, superorder, is sometimes added directly above order, with suborder directly beneath order. An order can also be defined as a group of related families. What does and does not belong to each order is determined by a taxonomist, as is whether a particular order should be recognized at all. Often there is no exact agreement, with different taxonomists each taking a different position. There are no hard rules that a taxonomist needs to follow in describing or recognizing an order. Some taxa are accepted almost universally, while others are recognized only rarely. The name of an order is usually written with a capital letter. Fo ... [...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] |
