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Mylopharodon Doliolus
''Mylopharodon'' is a genus of freshwater ray-finned fishes belonging to the family Leuciscidae, which includes the daces, chubs and related fishes. The genus contains one extant species and two extinct species, all of which are found in Western North America. Species ''Mylopharodon'' contains the following species: * ''Mylopharodon conocephalus'' Ayres, 1855 (Hardhead) * †'' Mylopharodon doliolus'' Smith & Kimmel, 1982 - Middle Miocene-aged Esmeralda Formation of Nevada * †'' Mylopharodon hagermanensis'' Uyeno, 1961 - Pliocene-aged Glenns Ferry Formation The Glenns Ferry Formation is a Pliocene stratigraphic unit in the western United States. Outcrops of the formation in Hagerman Fossil Beds National Monument preserve the remains of seven fish species, five of which are extinct. These include the t ... of Idaho. References {{Taxonbar, from=Q18663456 Laviniinae Taxa named by William Orville Ayres Fish genera with one living species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Orville Ayres
William Orville Ayres (September 11, 1817 – April 30, 1887) was an American physician and ichthyologist. Born in Connecticut, he studied to become a Physician, doctor at Yale University School of Medicine. Life and career Ayers, the son of Jared and Dinah (Benedict) Ayres, was born in New Canaan, Connecticut, New Canaan, Conn, September 11, 1817. He graduated from Yale College in 1837. For fifteen years after graduation he was employed as a teacher as follows in Berlin, Connecticut, Berlin, Conn. (1837–38), Miller Place, New York, Miller's Place, L. I. (1838–41), East Hartford, Connecticut, East Hartford, Conn. (1842–44), Sag Harbor, New York, Sag Harbor, L. I. (1844–47), and Boston, Mass (1845–52). He began the study of medicine in Boston, and in 1854 received the degree of M.D. from Yale College. He then moved to San Francisco, Cal., where he remained for nearly twenty years, engaged in practice. He also served as Professor of the Theory and Practice of Medicine i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylopharodon Conocephalus
''Mylopharodon conocephalus'', known as the hardhead, is a freshwater ray-finned fish from the family Leuciscidae, which includes the daces, Eurasian minnows and related fishes. which is endemic to California. It is the sole extant member of the genus ''Mylopharodon''. Description The hardhead has an elongated, slender body which is brown to dusky bronze above, the larger fish being darkest, with silver sides. The dorsal fin has its origin behind that of the pelvic fin, It has 69–81 scales on its lateral line; the dorsal fin has 8 rays. The jaws are not extendable and there is a premaxillary frenum. The snout is long and pointed, ending with the large, terminal mouth which reaches back to the front of the eye. It has 2.5-4.2 pharyngeal teeth. It grows to around standard length. The juvenile fish are silvery. The adult males grow small white nuptial tubercles on the head and on a band extending from the head to the caudal peduncle in the Spring spawning season. Distribution Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylopharodon Doliolus
''Mylopharodon'' is a genus of freshwater ray-finned fishes belonging to the family Leuciscidae, which includes the daces, chubs and related fishes. The genus contains one extant species and two extinct species, all of which are found in Western North America. Species ''Mylopharodon'' contains the following species: * ''Mylopharodon conocephalus'' Ayres, 1855 (Hardhead) * †'' Mylopharodon doliolus'' Smith & Kimmel, 1982 - Middle Miocene-aged Esmeralda Formation of Nevada * †'' Mylopharodon hagermanensis'' Uyeno, 1961 - Pliocene-aged Glenns Ferry Formation The Glenns Ferry Formation is a Pliocene stratigraphic unit in the western United States. Outcrops of the formation in Hagerman Fossil Beds National Monument preserve the remains of seven fish species, five of which are extinct. These include the t ... of Idaho. References {{Taxonbar, from=Q18663456 Laviniinae Taxa named by William Orville Ayres Fish genera with one living species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Miocene
The Middle Miocene is a sub-epoch of the Miocene epoch (geology), epoch made up of two Stage (stratigraphy), stages: the Langhian and Serravallian stages. The Middle Miocene is preceded by the Early Miocene. The sub-epoch lasted from 15.97 ± 0.05 Ma (million years ago) to 11.608 ± 0.005 Ma. During this period, a sharp drop in global temperatures took place. This event is known as the Middle Miocene disruption, Middle Miocene Climatic Transition. For the purpose of establishing European land mammal ages, this sub-epoch is equivalent to the Astaracian age. References External links GeoWhen Database - Middle Miocene Miocene, .02 Miocene geochronology, 02 Langhian, * Serravallian, * {{geochronology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esmeralda Formation
The Esmeralda Formation is a geologic formation in Nevada. It preserves fossils dating back to the Neogene period. See also * List of fossiliferous stratigraphic units in Nevada * Paleontology in Nevada Paleontology in Nevada refers to paleontological research occurring within or conducted by people from the United States, U.S. state of Nevada. Nevada has a rich fossil Fossil record, record of plants and animal life spanning the past 650 million ... References * Neogene geology of Nevada Geologic formations of Nevada {{Neogene-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylopharodon Hagermanensis
''Mylopharodon hagermanensis'' is an extinct species of freshwater ray-finned fish belonging to the family Leuciscidae, the family which includes the chubs, dace A dace is a small fish that can be one of many different species. The unmodified name is usually a reference to the common dace (''Leuciscus leuciscus''). This, like most fish called "daces", belongs to the family Leuciscidae, mostly in subfami ...s, Eurasian minnows and related species. This Pliocene species is found in the Hagerman Fossil Beds of the Glenns Ferry Formation. References {{Taxonbar, from=Q134474688 hagermanensis Fish described in 1961 Pliocene fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glenns Ferry Formation
The Glenns Ferry Formation is a Pliocene stratigraphic unit in the western United States. Outcrops of the formation in Hagerman Fossil Beds National Monument preserve the remains of seven fish species, five of which are extinct. These include the teleosteans '' Mylopharodon hagermanensis'', '' Sigmopharyngodon idahoensis'', and '' Ptychocheilus oregonensis'', '' Ameirurus vespertinus'', and the sunfish '' Archoplites taylori''. A nearly complete skull of the catfish '' Ameirurus vespertinus'' was recovered in 2001 from the wall of the Smithsonian Horse Quarry. The formation was deposited by Lake Idaho. References References *Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science The New Mexico Museum of Natural History and Science is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laviniinae
Laviniinae is a subfamily of freshwater ray-finned fishes belonging to the family Leuciscidae, the family which includes the daces, chubs, Eurasian minnows and related fishes. Members of this subfamily are known as western chubs or the western clade (WC) of minnows. As the name suggests, most members of this clade are found in western North America aside from '' Chrosomus'', which is found in eastern North America. One of the largest North American cypriniforms and the largest member of Leuciscidae, the Colorado pikeminnow (''Ptychocheilus lucius''), belongs to this subfamily. Fossil remains of a large minnow presumably related to '' Ptychocheilus'' have been recovered from the Late Eocene or Early Oligocene-aged deposits of the Cypress Hills Formation in Saskatchewan Saskatchewan is a Provinces and territories of Canada, province in Western Canada. It is bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, to the northe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mylopharodon
''Mylopharodon'' is a genus of freshwater ray-finned fishes belonging to the family Leuciscidae, which includes the daces, chubs and related fishes. The genus contains one extant species and two extinct species, all of which are found in Western North America. Species ''Mylopharodon'' contains the following species: * '' Mylopharodon conocephalus'' Ayres, 1855 (Hardhead) * †'' Mylopharodon doliolus'' Smith & Kimmel, 1982 - Middle Miocene-aged Esmeralda Formation of Nevada * †'' Mylopharodon hagermanensis'' Uyeno, 1961 - Pliocene The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58Glenns Ferry Formation of Idaho. References |
Taxa Named By William Orville Ayres
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
