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Scytalocrinus
''Scytalocrinus'' is an extinct genus of crinoids. Fossil records This genus is known in the fossil records of the Carboniferous period of United States and United Kinhgdom (age range: from 345.3 to 314.6 million years ago). Species * ''Scytalocrinus barumensis'' Whidborne 1896 * ''Scytalocrinus crassibrachiatus'' Moore and Strimple 1973 * ''Scytalocrinus sansabensis'' Moore and Plummer 1940 References * See also List of crinoid genera This list of crinoid genera is an attempt to create a comprehensive listing of all genera that have ever been considered to be crinoids, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that a ... Cladida Prehistoric crinoid genera {{paleo-crinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Crinoid Genera
This list of crinoid genera is an attempt to create a comprehensive listing of all genera that have ever been considered to be crinoids, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful ('' nomina dubia''), or were not formally published (''nomina nuda''), as well as junior synonyms of more established names, and genera that are no longer considered crinoids. Naming conventions and terminology Naming conventions and terminology follow the International Code of Zoological Nomenclature (ICZN). Technical terms used include: * Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Michigan Museum Of Natural History
The University of Michigan Museum of Natural History is a natural history museum in Ann Arbor, Michigan, United States. The museum recently moved to a new location at 1105 North University Avenue, in the University of Michigan Biological Sciences Building. It opened in April 2019. A unit of the university's College of Literature, Science, and the Arts, the current building is located on the university's Central Campus and has 22,000 square feet of exhibit space in a building that it shares with three research museums (Anthropology, Zoology, Paleontology).Museum Facts University of Michigan Museum of Natural History. The University Herbarium is administered through the same organization. The natural history collections began in 1837, and for many years the museum was based in the Alexander Ruthven Museums Building, dating to 1928. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, 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 Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoderm
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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crinozoa
Crinozoa is a subphylum of mostly sessile echinoderms, of which the crinoids, or sea lilies, are the only extant members. Crinozoans have an extremely extensive fossil history, which may or may not extend into the Precambrian (provided the enigmatic Ediacaran '' Arkarua'' can be positively identified as an edrioasteroid). Classes within Crinozoa The classes currently contained within Crinozoa include Crinoidea, Cystoidea, Edrioasteroidea, and Rhombifera. See also * List of echinoderm orders * Blastoid Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm, often referred to as sea buds. They first appear, along with many other echinoderm classes, in the Ordovician period, and reached their greatest diversity in the Mississ ...s, superficially similar-appearing echinoderms that belong to a different echinoderm subphylum. References Animal subphyla Paleozoic invertebrates Extant Cambrian first appearances {{echinoderm-stub ... [...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] |
Cladida
Cladida is a major subgroup of crinoids with a complicated taxonomic history. Cladida was originally applied to a wide assortment of extinct crinoids with a dicyclcic calyx. Under this original definition, cladids would represent a paraphyletic order ancestral to several other major crinoid groups, particularly the living Articulata. More recently, Cladida has been redefined as a monophyletic parvclass of pentacrinoids which encompasses articulates and the extinct Flexibilia (flexibles). Cladids also include various minor taxa such as the hybocrinids and " cyathocrines". As flexibles were not originally considered cladids, the new subgroup Eucladida has been erected for cladids which are more derived than flexibles. Cladida is the sister group to Disparida, another large group of extinct crinoids. Taxonomy * Parvclass Cladida ** Superorder † Porocrinoidea *** Order † Hybocrinida *** Order † Porocrinida ** Superorder † Flexibilia *** Order † Sagenocrinida *** O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Wachsmuth
Charles Wachsmuth (September 13, 1829 – February 7, 1896) was a German-American paleontologist and businessman. After emigrating to the United States, he became a renowned expert on the Paleozoic fossil animals known as crinoids. He and his collaborator, Frank Springer, published numerous articles on the subject and built an exceptional collection of crinoid fossils. The culmination of his work was the two-volume "Monograph of the North American Crinoidea Camerata", coauthored with Springer and published posthumously in 1897. Early life Wachsmuth was born on September 13, 1829, in Hanover, Germany. His father, Christian Wachsmuth, was a lawyer and member of the Frankfurt parliament who intended his son to follow him in the legal profession. However, ill health forced Charles to leave school at age sixteen. His physician recommended a career in business. In 1852, he emigrated to the United States and worked in New York as an agent for a Hamburg shipping firm until 1854.Golds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frank Springer (palaeontologist)
Frank Springer (December 6, 1929 – April 2, 2009) was an American comics artist best known for Marvel Comics' '' Dazzler'' and ''Nick Fury, Agent of S.H.I.E.L.D.''. As well, in collaboration with writer Michael O'Donoghue, Springer created one of the first adult-oriented comics features on American newsstands: " The Adventures of Phoebe Zeit-Geist" in the magazine ''Evergreen Review''. A multiple winner of the National Cartoonists Society's Reuben Award, Springer was a president of the Society and a founding member of the Berndt Toast Gang, its Long Island chapter. Biography Early life and career Frank Springer was born in the Jamaica neighborhood of the New York City borough of Queens, and moved with his family to nearby Nassau County, Long Island when he was nearly 10 years old.Springer in He graduated from Malverne High School in Malverne, New York, in 1948. He had one sibling, a sister, who predeceased him. Springer, whose art influences included adventure comic strip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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