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Amyda
''Amyda'' is a genus of softshell turtles in the family Trionychidae. It contains two extant species: * ''Amyda cartilaginea'' - Asiatic softshell turtle * ''Amyda ornata'' - Southeast Asian softshell turtle Both species were formerly considered subspecies of a single species, ''Amyda cartilaginea'', but phylogenetic evidence supports both being distinct from one another. An undescribed species is also known from Borneo. The fossil taxon '' 'Amyda'' ' ''gregaria'' from the Eocene of Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a ... has been tentatively placed in the genus '' Trionyx''. References Turtle genera Taxa named by Étienne Geoffroy Saint-Hilaire Taxonomy articles created by Polbot {{Turtle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asiatic Softshell Turtle
The Asiatic softshell turtle or black-rayed softshell turtle (''Amyda cartilaginea'') is a species of softshell turtle in the Trionychidae family. Despite its name, it is not the only softshell turtle in Asia (most trionychines are Asian). Taxonomy Formerly considered the only extant species within '' Amyda'', a 2014 study found deep genetic divergence within this species and supported splitting it into three distinct species: ''A. cartilaginea sensu stricto'', ''A. ornata'' (the Southeast Asian softshell turtle), and an undescribed species from Borneo. Both ''Amyda cartilaginea'' and ''Amyda ornata'' branch into further subspecies, while ''Amyda'' (unnamed) is a terminal clade in itself. ''Amyda cartilagineas subspecies are: Amyda cartilaginea cartilaginea (''located in E. Sunde, E. Borneo, Java, and Sulawesi'') and Amyda cartilaginea maculosa (''found in Sumatra and West Borneo'').'' As for any marked different physical characteristics, ''Amyda cartilaginea cartilaginea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amyda Cartilaginea
The Asiatic softshell turtle or black-rayed softshell turtle (''Amyda cartilaginea'') is a species of softshell turtle in the Trionychidae family. Despite its name, it is not the only softshell turtle in Asia (most trionychines are Asian). Taxonomy Formerly considered the only extant species within ''Amyda'', a 2014 study found deep genetic divergence within this species and supported splitting it into three distinct species: ''A. cartilaginea sensu stricto'', ''A. ornata'' (the Southeast Asian softshell turtle), and an undescribed species from Borneo. Both ''Amyda cartilaginea'' and ''Amyda ornata'' branch into further subspecies, while ''Amyda'' (unnamed) is a terminal clade in itself. ''Amyda cartilagineas subspecies are: Amyda cartilaginea cartilaginea (''located in E. Sunde, E. Borneo, Java, and Sulawesi'') and Amyda cartilaginea maculosa (''found in Sumatra and West Borneo'').'' As for any marked different physical characteristics, ''Amyda cartilaginea cartilaginea' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amyda
''Amyda'' is a genus of softshell turtles in the family Trionychidae. It contains two extant species: * ''Amyda cartilaginea'' - Asiatic softshell turtle * ''Amyda ornata'' - Southeast Asian softshell turtle Both species were formerly considered subspecies of a single species, ''Amyda cartilaginea'', but phylogenetic evidence supports both being distinct from one another. An undescribed species is also known from Borneo. The fossil taxon '' 'Amyda'' ' ''gregaria'' from the Eocene of Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a ... has been tentatively placed in the genus '' Trionyx''. References Turtle genera Taxa named by Étienne Geoffroy Saint-Hilaire Taxonomy articles created by Polbot {{Turtle-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amyda Ornata
The Southeast Asian softshell turtle (''Amyda ornata'') is a species of softshell turtle in the family Trionychidae. Taxonomy It was formerly considered a subspecies of the Asiatic softshell turtle (''A. cartilaginea''), which is now thought to be restricted to the Malay Peninsula and the Malay Archipelago. A 2014 phylogenetic study found both to be distinct species from one another. The Reptile Database and Turtle Taxonomy Working Group also consider both to be distinct species. There are two subspecies: * ''A. o. ornata'' (Gray, 1861) ''–'' Thailand, Laos, Vietnam, Cambodia * ''A. o. phayrei'' (Theobald, 1868) – India, Bangladesh, Myanmar, Thailand An undescribed subspecies is also known from Bangladesh, though the TTWG classifies it within ''A. o. phayrei''. Distribution The species is found throughout much of Mainland Southeast Asia, and ranges from northwestern India south to southern Myanmar and east to Vietnam. Description Compared to ''A. cartilaginea'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southeast Asian Softshell Turtle
The Southeast Asian softshell turtle (''Amyda ornata'') is a species of softshell turtle in the family Trionychidae. Taxonomy It was formerly considered a subspecies of the Asiatic softshell turtle (''A. cartilaginea''), which is now thought to be restricted to the Malay Peninsula and the Malay Archipelago. A 2014 phylogenetic study found both to be distinct species from one another. The Reptile Database and Turtle Taxonomy Working Group also consider both to be distinct species. There are two subspecies: * ''A. o. ornata'' (Gray, 1861) ''–'' Thailand, Laos, Vietnam, Cambodia * ''A. o. phayrei'' (Theobald, 1868) – India, Bangladesh, Myanmar, Thailand An undescribed subspecies is also known from Bangladesh, though the TTWG classifies it within ''A. o. phayrei''. Distribution The species is found throughout much of Mainland Southeast Asia, and ranges from northwestern India south to southern Myanmar and east to Vietnam. Description Compared to ''A. cartilaginea'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Softshell Turtle
The Trionychidae are a taxonomic family of a number of turtle genera, commonly known as softshell turtles. The family was erected by Leopold Fitzinger in 1826. Softshells include some of the world's largest freshwater turtles, though many can adapt to living in highly brackish areas. Members of this family occur in Africa, Asia, and North America, with extinct species known from Australia. Most species have traditionally been included in the genus '' Trionyx'', but the vast majority have since been moved to other genera. Among these are the North American '' Apalone'' softshells that were placed in ''Trionyx'' until 1987. Characteristics They are called "softshell" because their carapaces lack horny scutes (scales), though the spiny softshell, '' Apalone spinifera'', does have some scale-like projections, hence its name. The carapace is leathery and pliable, particularly at the sides. The central part of the carapace has a layer of solid bone beneath it, as in other turtles, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trionychidae
The Trionychidae are a taxonomic family of a number of turtle genera, commonly known as softshell turtles. The family was erected by Leopold Fitzinger in 1826. Softshells include some of the world's largest freshwater turtles, though many can adapt to living in highly brackish areas. Members of this family occur in Africa, Asia, and North America, with extinct species known from Australia. Most species have traditionally been included in the genus '' Trionyx'', but the vast majority have since been moved to other genera. Among these are the North American '' Apalone'' softshells that were placed in ''Trionyx'' until 1987. Characteristics They are called "softshell" because their carapaces lack horny scutes (scales), though the spiny softshell, '' Apalone spinifera'', does have some scale-like projections, hence its name. The carapace is leathery and pliable, particularly at the sides. The central part of the carapace has a layer of solid bone beneath it, as in other turtles, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inner Mongolia
Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a small section of China's border with Russia ( Zabaykalsky Krai). Its capital is Hohhot; other major cities include Baotou, Chifeng, Tongliao, and Ordos. The autonomous region was established in 1947, incorporating the areas of the former Republic of China provinces of Suiyuan, Chahar, Rehe, Liaobei, and Xing'an, along with the northern parts of Gansu and Ningxia. Its area makes it the third largest Chinese administrative subdivision, constituting approximately and 12% of China's total land area. Due to its long span from east to west, Inner Mongolia is geographically divided into eastern and western divisions. The eastern division is often included in Northeastern China (Dongbei) with major cities including Tongliao, Chifeng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turtle Genera
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 plates tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trionyx
''Trionyx'' is a genus of softshell turtles belonging to the family Trionychidae. In the past many species in the family were classified in this genus, but today '' T. triunguis'', the African or Nile softshell turtle, is the only extant softshell still classified as ''Trionyx''. The other species still assigned to this genus are only known from fossils. ''T. triunguis'' is a relatively large, aquatic piscivore. Species The list of species follows a 2017 review of the Trionychidae by Georgios L. Georgalis and Walter G. Joyce. * '' Trionyx triunguis'' ( Forsskål, 1775) – African or Nile softshell turtle * † '' Trionyx pliocenicus'' Fucini, 1912 – Pliocene of Tuscany (Italy) * † '' Trionyx vindobonensis'' (Peters, 1855) – Miocene of Vienna (Austria) The following species are considered valid trionychid taxa, but with uncertain phylogenetic relationships. They are only referred to ''Trionyx'' provisionally due to its historic status as a wastebasket taxon Waste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undescribed Taxon
In taxonomy, an undescribed taxon is a taxon (for example, a species) that has been discovered, but not yet formally described and named. The various Nomenclature Codes specify the requirements for a new taxon to be validly described and named. Until such a description has been published, the taxon has no formal or official name, although a temporary, informal name is often used. A published scientific name may not fulfil the requirements of the Codes for various reasons. For example, if the taxon was not adequately described, its name is called a '' nomen nudum''. It is possible for a taxon to be "undescribed" for an extensive period of time, even if unofficial descriptions are published. An undescribed species may be referred to with the genus name, followed by "sp"., but this abbreviation is also used to label specimens or images that are too incomplete to be identified at the species level. In some cases, there is more than one undescribed species in a genus. In this ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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