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Atrato Slider
The Atrato slider (''Trachemys medemi'') is a species of turtle in the family Emydidae endemic to northwestern Colombia. It was described in 2017. Geographic range The Atrato slider's geographical range is in the lower Atrato river basin of Antioquia and Chocó departments of northwestern Colombia, near the Panamanian border. Evolutionary history There were two major migrations of sliders into South America during the Great American Interchange of the Cenozoic The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants, a cooling and drying climate, and the current configura .... During the first migration, which occurred about 7.1-8.6 million years ago, the last recent common ancestor of ''T. medemi'' and '' T. dorbigni'' spread from Central America into South America, with ''T. dorbigni'' expanding into the eastern parts of the continent while ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cenozoic
The Cenozoic ( ; ) is Earth's current geological era, representing the last 66million years of Earth's history. It is characterised by the dominance of mammals, birds and flowering plants, a cooling and drying climate, and the current configuration of continents. It is the latest of three geological eras since complex life evolved, preceded by the Mesozoic and Paleozoic. It started with the Cretaceous–Paleogene extinction event, when many species, including the non-avian dinosaurs, became extinct in an event attributed by most experts to the impact of a large asteroid or other celestial body, the Chicxulub impactor. The Cenozoic is also known as the Age of Mammals because the terrestrial animals that dominated both hemispheres were mammalsthe eutherians (placentals) in the northern hemisphere and the metatherians (marsupials, now mainly restricted to Australia) in the southern hemisphere. The extinction of many groups allowed mammals and birds to greatly diversify so tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Colombia
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turtles Of South America
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts. There are 360 living and recently extinct species of turtles, including land-dwelling tortoises and freshwater terrapins. They are found on most continents, some islands and, in the case of sea turtles, much of the ocean. Like other amniotes (reptiles, birds, and mammals) they breathe air and do not lay eggs underwater, although many species live in or around water. Turtle shells are made mostly of bone; the upper part is the domed carapace, while the underside is the flatter plastron or belly-plate. Its outer surface is covered in scales made of keratin, the material of hair, horns, and claws. The carapace bones develop from ribs that grow sideways and develop into broad flat pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachemys
''Trachemys'' is a genus of turtles belonging to the family Emydidae. Members of this genus are native to the Americas, ranging from the Midwestern United States south to northern Argentina, but one subspecies, the red-eared slider (''T. scripta elegans''), has been introduced worldwide. Species under this genus are commonly referred to as sliders. Species and subspecies Extant *''Trachemys adiutrix'' – Maranhão slider *''Trachemys callirostris'' – Colombian slider **''T. c. callirostris'' – Colombian slider **''T. c. chichiriviche'' – Venezuelan slider *''Trachemys decorata'' – Hispaniolan slider *'' Trachemys decussata'' – Cuban slider **''T. d. angusta'' – western Cuban slider **''T. d. decussata'' – eastern Cuban slider *'' Trachemys dorbigni'' – D'Orbigny's slider *'' Trachemys emolli'' – Nicaraguan slider *''Trachemys gaigeae'' – Big Bend slider *''Trachemys hartwegi'' – Nazas slider *''Trachemys medemi'' – Atrato slider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachemys Venusta
The Meso-American slider (''Trachemys venusta'') is a species of turtle belonging to the family Emydidae. The species is distributed from Mexico to Colombia. Geographic range The species ''Trachemys venusta'' is found from southeastern Mexico to northwestern Colombia. *''Trachemys venusta venusta'' – Belize, Guatemala, Honduras, and Mexico in the states of Campeche, Chiapas, Oaxaca, Quintana Roo, Tabasco, Veracruz, and Yucatán *''Trachemys venusta cataspila'' – Mexico in the states of San Luis Potosí, Tamaulipas, and Veracruz *''Trachemys venusta grayi'' – El Salvador, Guatemala and Mexico in the states of Chiapas and Oaxaca The following three new subspecies were described in 2010. *''Trachemys venusta iversoni'' – Mexico in the state of Yucatán *''Trachemys venusta panamensis'' – Panama *''Trachemys venusta uhrigi'' – Costa Rica, Honduras, Nicaragua, Panama, and Colombia in the departments of Antioquia Antioquia is the Spanish form of Antioch. An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachemys Dorbigni
D'Orbigny's slider or the black-bellied slider (''Trachemys dorbigni''), commonly known in Brazil as ''tartaruga-tigre'' or ''tartaruga-tigre-d'água'' (which mean "tiger turtle" and "water tiger turtle" in Portuguese), is a species of water turtle in the family Emydidae. The species is found in southern Brazil, northeastern Argentina, and Uruguay. Two subspecies (in addition to the nominate subspecies) are recognized as being valid, '' Trachemys dorbigni adiutrix'' and ''Trachemys dorbigni brasiliensis''. Etymology The specific name, ''dorbigni'', is in honor of French naturalist Alcide d'Orbigny.Beolens, Bo; Watkins, Michael; Grayson Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Trachemys dorbigni'', p. 195). Description The form of the plastron determines its gender. After a few years of life, show differences between male and female. Males have a penis that is inserted into the tail. It becomes appar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Ancestor
Common descent is a concept in evolutionary biology applicable when one species is the ancestor of two or more species later in time. All living beings are in fact descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth, according to modern evolutionary biology. Common descent is an effect of speciation, in which multiple species derive from a single ancestral population. The more recent the ancestral population two species have in common, the more closely are they related. The most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago. The two earliest pieces of evidence for life on Earth are graphite found to be biogenic in 3.7 billion-year-old metasedimentary rocks discovered in western Greenland and microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. All currently living organisms on Earth s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great American Interchange
The Great American Biotic Interchange (commonly abbreviated as GABI), also known as the Great American Interchange and the Great American Faunal Interchange, was an important late Cenozoic paleozoogeographic biotic interchange event in which land and freshwater fauna migrated from North America via Central America to South America and vice versa, as the volcanic Isthmus of Panama rose up from the sea floor and bridged the formerly separated continents. Although earlier dispersals had occurred, probably over water, the migration accelerated dramatically about 2.7 million years ( Ma) ago during the Piacenzian age. It resulted in the joining of the Neotropic (roughly South American) and Nearctic (roughly North American) biogeographic realms definitively to form the Americas. The interchange is visible from observation of both biostratigraphy and nature ( neontology). Its most dramatic effect is on the zoogeography of mammals, but it also gave an opportunity for reptiles, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turtle
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts. There are 360 living and recently extinct species of turtles, including land-dwelling tortoises and freshwater terrapins. They are found on most continents, some islands and, in the case of sea turtles, much of the ocean. Like other amniotes (reptiles, birds, and mammals) they breathe air and do not lay eggs underwater, although many species live in or around water. Turtle shells are made mostly of bone; the upper part is the domed carapace, while the underside is the flatter plastron or belly-plate. Its outer surface is covered in scales made of keratin, the material of hair, horns, and claws. The carapace bones develop from ribs that grow sideways and develop into broad flat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panama
Panama ( , ; es, link=no, Panamá ), officially the Republic of Panama ( es, República de Panamá), is a transcontinental country spanning the southern part of North America and the northern part of South America. It is bordered by Costa Rica to the west, Colombia to the southeast, the Caribbean Sea to the north, and the Pacific Ocean to the south. Its capital and largest city is Panama City, whose metropolitan area is home to nearly half the country's million people. Panama was inhabited by indigenous tribes before Spanish colonists arrived in the 16th century. It broke away from Spain in 1821 and joined the Republic of Gran Colombia, a union of Nueva Granada, Ecuador, and Venezuela. After Gran Colombia dissolved in 1831, Panama and Nueva Granada eventually became the Republic of Colombia. With the backing of the United States, Panama seceded from Colombia in 1903, allowing the construction of the Panama Canal to be completed by the United States Army Corps of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chocó Department
Choco Department is a department of Western Colombia known for its large Afro-Colombian population. It is in the west of the country, and is the only Colombian department to have coastlines on both the Pacific Ocean and the Atlantic Ocean. It contains all of Colombia's border with Panama. Its capital is Keebdaw. Chocó has a diverse geography, unique ecosystems and unexploited natural resources. However, its population has one of the lowest standards of living of all departments in Colombia. A major factor, cited by the government, is the rugged, montane rainforest environment, limiting any infrastructure improvements to the region. No major highway has been worked on since initial foundations were laid down in 1967. This roadway would have successfully linked Chocó to the nearest large city, Medellin, providing easier access to medical care, necessities, food, and more. Currently, depending on their location, residents of Chocó who are in a medical emergency, and who do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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