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Megapiranha
''Megapiranha'' is an extinct serrasalmid characin fish from the Late Miocene (8–10 million years ago) Ituzaingó Formation of Argentina, described in 2009. The type species is ''M. paranensis''.''Megapiranha'' at .org It is thought to have been about in length and in weight. The consists only of e and a zigzag tooth row; the rest of its body is unknown. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piranha
A piranha (, or ; ) is any of a number of freshwater fish species in the subfamily Serrasalminae, of the family Serrasalmidae, in the order Characiformes. These fish inhabit South American rivers, floodplains, lakes and reservoirs. Although often described as extremely predatory and mainly feeding on fish, their dietary habits vary extensively, and they will also take plant material, leading to their classification as omnivorous. Etymology The name originates from Old Tupi '' pirãîa'', being first attested in the 1587 treatise ' by Portuguese explorer Gabriel Soares de Sousa. ''Piranha'' first appears in 1869 in English literature, likely borrowed from Portuguese. Taxonomy and evolution Piranhas belong to the family Serrasalmidae, which includes closely related omnivorous fish such as pacus. Traditionally, only the four genera '' Pristobrycon'', '' Pygocentrus'', '' Pygopristis'', and '' Serrasalmus'' are considered to be true piranhas, due to their specialized teeth. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ituzaingó Formation
The Ituzaingó Formation (), in older literature also described as Entre Ríos or Entrerriana Formation, is an extensive formation (geology), geological formation of Late Miocene (Tortonian, or Huayquerian in the South American land mammal age, SALMA classification) age in the Paraná Basin of the Corrientes Province, Corrientes, Santa Fe Province, Santa Fe and Entre Ríos Provinces in Mesopotamia, Argentina, Mesopotamia, northeastern Argentina.Ituzaingó Formation at Fossilworks.org The formation comprises mudstones, cross-bedded sandstones and conglomerate (geology), conglomerates deposited in a fluvial, fluvio-river delta, deltaic depositional environment, environment and is renowned for the preservation of a rich fossil assemblage, including many mammals, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huayquerian
The Huayquerian () age is a period of geologic time (9.0–6.8 Ma) within the Late Miocene epoch of the Neogene, used more specifically within the SALMA classification. It follows the Chasicoan and precedes the Montehermosan age. Etymology The age is named after the Huayquerías Formation in the western Cuyo Basin of northwestern Argentina that was later dated to the Montehermosan The Montehermosan age is a period of geologic time (6.8–4.0 Mya (unit), Ma) within the Miocene and Pliocene epochs of the Neogene used more specifically with South American Land Mammal Ages. It follows the Huayquerian and precedes the Chapadmalal .... The most complete Huayquerian fauna is found in the Cerro Azul Formation, in Buenos Aires Province also referred to as Epecuén Formation. Formations Fossil content Correlations Notes and references Notes References Bibliography ;Huayquerías Formation * * ;Andalhuala Formation * ;Camacho Formation * * * ;Cerro A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serrasalmidae
The Serrasalmidae (serrasalmids) are a family of characiform fishes native to freshwater habitats of South America. They include more than 90 species. The name means "serrated salmon family", which refers to the serrated keel running along the belly of these fish. Fish classified as Serrasalmidae are also known by these common names: pacu, piranha, and silver dollar. These common names generally designate differing dental characteristics and feeding habits. Description Serrasalmids are medium- to large-sized characiform bony fishes that reach about long, generally characterized by a deep, laterally compressed body with a series of midventral abdominal spines or scutes, and a long dorsal fin (over 16 rays). Most species also possess an anteriorly directed spine just before the dorsal fin extending from a supraneural bone; exceptions include members of the genera '' Colossoma'', '' Piaractus'', and '' Mylossoma''. Most serrasalmids have about 60 chromosomes, ranging fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equilateral Triangle
An equilateral triangle is a triangle in which all three sides have the same length, and all three angles are equal. Because of these properties, the equilateral triangle is a regular polygon, occasionally known as the regular triangle. It is the special case of an isosceles triangle by modern definition, creating more special properties. The equilateral triangle can be found in various tilings, and in polyhedrons such as the deltahedron and antiprism. It appears in real life in popular culture, architecture, and the study of stereochemistry resembling the molecular known as the trigonal planar molecular geometry. Properties An equilateral triangle is a triangle that has three equal sides. It is a special case of an isosceles triangle in the modern definition, stating that an isosceles triangle is defined at least as having two equal sides. Based on the modern definition, this leads to an equilateral triangle in which one of the three sides may be considered its base. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Name
In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (often shortened to just "binomial"), a binomen, name, or a scientific name; more informally, it is also called a Latin name. In the International Code of Zoological Nomenclature (ICZN), the system is also called nomenclature, with an "n" before the "al" in "binominal", which is a typographic error, meaning "two-name naming system". The first part of the name – the '' generic name'' – identifies the genus to which the species belongs, whereas the second part – the specific name or specific epithet – distinguishes the species within the genus. For example, modern humans belong to the genus ''Homo'' and within this genus to the species ''Hom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tambaqui
The tambaqui (''Colossoma macropomum'') is a large species of freshwater fish in the family Serrasalmidae. It is native to tropical South America, but kept in aquaculture and Introduced species, introduced elsewhere. It is also known by the names black pacu, black-finned pacu, giant pacu, cachama, gamitana, and sometimes as pacu (a name used for several other related species). The tambaqui is currently the only member of ''Colossoma'', but the ''Piaractus'' species were also included in this genus in the past. Distribution The tambaqui is native to freshwater habitats in the Amazon Basin, Amazon and Orinoco basins of tropical South America. In nutrient-rich Whitewater river (river type), whitewater rivers such as the Madeira River, Madeira, Juruá River, Juruá, Putumayo River, Putumayo (Içá) and Purus River, Purus it ranges throughout, all the way up to their headwaters.Araujo-Lima, C.A.R.M.; and M.L. Ruffino (2003). Migratory Fishes of the Brazilian Amazon. Pp. 233—302 in: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catoprion
''Catoprion'' is a genus of serrasalmids from tropical South America, including the basins of the Amazon, Essequibo, Orinoco and Paraguay rivers. It was believed to be a monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ... genus until the 2020 description of '' C. absconditus''. Species There are 2 described species: * '' Catoprion mento'' * '' Catoprion absconditus'' References {{Taxonbar, from=Q19757948 Serrasalmidae Ray-finned fish genera Taxa named by Johannes Peter Müller Taxa named by Franz Hermann Troschel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Miocene
The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million years ago) to 5.333 Ma. The evolution of ''Homo'' The gibbons (family Hylobatidae) and orangutans (genus ''Pongo'') were the first groups to split from the line leading to the hominins, including humans, then gorillas (genus ''Gorilla''), and finally chimpanzees and bonobos (genus ''Pan (genus), Pan''). The splitting date between hominin and chimpanzee lineages is placed by some between 4 and 8 million years ago, that is, during the Late Miocene. References External links GeoWhen Database - Late Miocene Miocene, .03 Miocene geochronology, 03 Messinian, * Tortonian, * {{geochronology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serrasalmus Rhombeus
The black piranha (''Serrasalmus rhombeus''), also known as the redeye piranha, white piranha, spotted piranha or yellow piranha, is a species of freshwater ray-finned fish, a piranha from the Family (biology), family Serrasalmidae. It is found in northern South America. It is the type species of the genus ''Serrasalmus''. Taxonomy The black piranha was first formally Species description, described in 1766 as ''Salmo rhombeus'' with the Type locality (biology), type locality given as Brokopondo on the Suriname River in Surinam. When Bernard Germain de Lacépède created the genus ''Serrasalmus'' in 1803 the only species he placed in it was ''Salmo rhombeus'', so this species is the type species of its genus. The morphological differences between populations suggest that ''S. rhombeus'' is a species complex, but molecular work to confirm this has yet to be undertaken. Distribution The black piranha is found in northern South America, east of the Andes. They are found in the drainag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tupi Language
Old Tupi, Ancient Tupi or Classical Tupi () is a classical Tupian language which was spoken by the indigenous Tupi people of Brazil, mostly those who inhabited coastal regions in South and Southeast Brazil. In the words of Brazilian tupinologist Eduardo Navarro, "it is the classical indigenous language of Brazil, and the one which had the utmost importance to the cultural and spiritual formation of the country". Old Tupi belongs to the Tupi–Guarani language family, and has a written history spanning the 16th, 17th, and early 18th centuries. In the early colonial period, Tupi was used as a ''lingua franca'' throughout Brazil by Europeans and Amerindians, and had literary usage, but it was later suppressed almost to extinction. Today, its sole living descendant is the Nheengatu language. As the most important native language of Brazil, it is the origin of most city names of indigenous origin ( Pindamonhangaba, Ubatuba, Botucatu, Jacareí). It also names several plant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
