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Southern Stargazer
The southern stargazer (''Astroscopus y-graecum'') is a species of marine fish in the family Uranoscopidae and genus ''Astroscopus''. They are native to the United States. Description Southern stargazers are able to reach a maximum size of . These fish have a brownish body color with small white spots, and their pectoral fins are lined in black and white. Their tails have three black or brown stripes on the caudal. They use their pectoral fins to dig and bury themselves in the sediment. They have 8 dorsal spines, 13–14 soft dorsal rays, no anal spines, and 13 soft anal rays. They have a cleithral spine that has a venom gland. When they bury themselves in the sand they leave their eyes, nostrils, and most of their mouth above the sand. In order to breathe they take water in through the nostrils which are protected from the sand by fleshy comb-shaped fringes; the mouth also has these fringes. These fish do not have scales on the top of their heads, but have them on the rest of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The IUCN Red List Of Threatened Species
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological species. A series of Regional Red Lists, which assess the risk of extinction to species within a political management unit, are also produced by countries and organizations. The goals of the Red List are to provide scientifically based information on the status of species and subspecies at a global level, to draw attention to the magnitude and importance of threatened biodiversity, to influence national and international policy and decision-making, and to provide information to guide actions to conserve biological diversity. Major species assessors include BirdLife International, the Institute of Zoology (the research division of the Zoological Society of London), the World Conservation Monitoring Centre, and many Specialist Groups within th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Cuvier
Jean Léopold Nicolas Frédéric, baron Cuvier (23 August 1769 – 13 May 1832), known as Georges Cuvier (; ), was a French natural history, naturalist and zoology, zoologist, sometimes referred to as the "founding father of paleontology". Cuvier was a major figure in natural sciences research in the early 19th century and was instrumental in establishing the fields of comparative anatomy and paleontology through his work in comparing living animals with fossils. Cuvier's work is considered the foundation of vertebrate paleontology, and he expanded Linnaean taxonomy by grouping classes into phylum, phyla and incorporating both fossils and living species into the classification. Cuvier is also known for establishing extinction as a fact—at the time, extinction was considered by many of Cuvier's contemporaries to be merely controversial speculation. In his ''Essay on the Theory of the Earth'' (1813) Cuvier proposed that now-extinct species had been wiped out by periodic catastr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astroscopus
''Astroscopus'', the electric stargazers, is a genus of stargazer (fish), stargazers, a type of Percomorpha, percomorph fish from the Family (biology), family Uranoscopidae, part of the Order (biology), order Labriformes. The species in this genus are anatomically distinct uranoscopids, being characterized by internal Nostril, nares and being the only group of marine bony fish having organs which produce electricity which are derived from the extraocular muscles. They are found on the Atlantic and Pacific coasts of the Americas. Species There are four extant and one extinct species included in ''Astroscopus'': * ''Astroscopus guttatus'' Abbott, 1860 - Northern stargazer * ''Astroscopus sexspinosus'' (Steindachner, 1876) - Brazilian Stargazer * ''Astroscopus y-graecum'', (Cuvier, 1829) - Southern stargazer * ''Astroscopus zephyreus'' Gilbert & Starks in Gilbert, 1897 * †''Astroscopus countermani'' Carnevale, Godfrey & Pietsch, 2011 Extinct species described from the Tortonian d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astroscopus Y-graecum 160695016
''Astroscopus'', the electric stargazers, is a genus of stargazers, a type of percomorph fish from the family Uranoscopidae, part of the order Labriformes. The species in this genus are anatomically distinct uranoscopids, being characterized by internal nares and being the only group of marine bony fish having organs which produce electricity which are derived from the extraocular muscles. They are found on the Atlantic and Pacific coasts of the Americas. Species There are four extant and one extinct species included in ''Astroscopus'': * ''Astroscopus guttatus'' Abbott, 1860 - Northern stargazer * '' Astroscopus sexspinosus'' (Steindachner, 1876) - Brazilian Stargazer * '' Astroscopus y-graecum'', (Cuvier, 1829) - Southern stargazer * '' Astroscopus zephyreus'' Gilbert & Starks in Gilbert, 1897 * †'' Astroscopus countermani'' Carnevale, Godfrey & Pietsch, 2011 Extinct species described from the Tortonian deposits of Calvert Cliffs, Maryland Maryland ( ) is a U.S. s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1829
A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can be grouped into the more basal (phylogenetics), basal jawless fish and the more common jawed fish, the latter including all extant taxon, living cartilaginous fish, cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single Class (biology), class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are ectotherm, cold-blooded, their body temperature varying with the surrounding water, though some large nekton, active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communication in aquatic animals#Acoustic, communicate acoustically with each other, such as during courtship displays. The stud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Georges Cuvier
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] |
