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Centrochelys Punica
''Centrochelys'' is a genus of tortoise. It contains one living species, the African spurred tortoise (''Centrochelys sulcata''), native to the Sahel and adjacent areas. A number of fossil species have been attributed to this genus, but their placement in the genus is considered equivocal. * '' "Centrochelys" atlantica'' Sal Island, Cape Verde, Pleistocene * '' "Centrochelys" burchardi'' Tenerife, Canary Islands, Middle Pleistocene carapace length . * '' "Centrochelys" marocana'' Morocco, North Africa, latest Pliocene-earliest Pleistocene, c. 2.6 mya carapace length ~. * '' “Centrochelys” punica'' Tunisia, North Africa, Early Pliocene carapace length ~. * '' "Centrochelys" vulcanica'' Gran Canaria, Canary Islands, Pliocene only known from femur, estimated carapace length The conservation status of ''Centrochelys sulcata ''has been changed from Vulnerable to Threatened with extinction by the International Union for Conservation of Nature because of seasonal wildfires, the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrochelys Sulcata
The African spurred tortoise (''Centrochelys sulcata''), also called the sulcata tortoise, is an endangered species of tortoise inhabiting the southern edge of the Sahara Desert, the Sahel, in Africa. It is the largest mainland species of tortoise in Africa, and the third-largest in the world, after the Galapagos tortoise and Aldabra giant tortoise. It is the only living species in its genus, '' Centrochelys.'' Taxonomy and etymology In 1779 the English illustrator John Frederick Miller included a hand-coloured plate of the African spurred tortoise in his ''Icones animalium et plantarum'' and coined the binomial name ''Testudo sulcata''. Its specific name ''sulcata'' is from the Latin word ''sulcus'' meaning "furrow" and refers to the furrows on the tortoise's scales. The species was subsequently given other binomial names. There are no recognized subspecies despite there being two separate populations, one in Western Africa and the other in Eastern Africa. There are also thre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrochelys Marocana
''Centrochelys'' is a genus of tortoise. It contains one living species, the African spurred tortoise (''Centrochelys sulcata''), native to the Sahel and adjacent areas. A number of fossil species have been attributed to this genus, but their placement in the genus is considered equivocal. * '' "Centrochelys" atlantica'' Sal Island, Cape Verde, Pleistocene * '' "Centrochelys" burchardi'' Tenerife, Canary Islands, Middle Pleistocene carapace length . * '' "Centrochelys" marocana'' Morocco, North Africa, latest Pliocene-earliest Pleistocene, c. 2.6 mya carapace length ~. * '' “Centrochelys” punica'' Tunisia, North Africa, Early Pliocene carapace length ~. * '' "Centrochelys" vulcanica'' Gran Canaria, Canary Islands, Pliocene only known from femur, estimated carapace length The conservation status of ''Centrochelys sulcata ''has been changed from Vulnerable to Threatened with extinction by the International Union for Conservation of Nature because of seasonal wildfires, the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reptile Genera With One Living Species
Reptiles, as commonly defined, are a group of tetrapods with an ectothermic metabolism and amniotic development. Living traditional reptiles comprise four orders: Testudines, Crocodilia, Squamata, and Rhynchocephalia. About 12,000 living species of reptiles are listed in the Reptile Database. The study of the traditional reptile orders, customarily in combination with the study of modern amphibians, is called herpetology. Reptiles have been subject to several conflicting taxonomic definitions. In Linnaean taxonomy, reptiles are gathered together under the class Reptilia ( ), which corresponds to common usage. Modern cladistic taxonomy regards that group as paraphyletic, since genetic and paleontological evidence has determined that birds (class Aves), as members of Dinosauria, are more closely related to living crocodilians than to other reptiles, and are thus nested among reptiles from an evolutionary perspective. Many cladistic systems therefore redefine Reptilia as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turtle Genera
Turtles are reptiles of the order (biology), order Testudines, characterized by a special turtle shell, 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 Amniote, 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 Turtle shell#Carapace, carapace, while the underside is the flatter plastron or belly-plate. Its outer surface is covered in scale (anatomy), scales made of keratin, the material of hair, horns, and claws. The carapace bones deve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solitudo
''Solitudo'' is an extinct genus of tortoise that was found during the Pliocene and Pleistocene on the Mediterranean islands of Menorca, Malta and Sicily. The genus includes three described species, ''Solitudo robusta'', ''Solitudo gymnesica'' and ''Solitudo sicula'' as well as a likely fourth, undescribed species from Monte Pellegrino in Sicily. ''Solitudo sicula'', the youngest of the species, died out approximately 12.5 thousand years Before Present, BP. The largest species, ''Solitudo gymnesica'', has been estimated to have reached a carapace length of . History The oldest discoveries of fossil turtles now included under ''Solitudo'' were made in the 19th century, with Leith-Adams describing remains from Zebbug Cave (Malta) as ''Testudo robusta''. In 1914 ''Testudo gymnesica'' was described based on Pliocene material found on Menorca. Younger material was later discovered in the Zubbio di Cozzo San Pietro cave in northern Sicily. These remains, which include a femur, phalanx ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status of the natural world and the measures needed to safeguard it. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened Species
A threatened species is any species (including animals, plants and fungi) which is vulnerable to extinction in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment without direct reference to human activity. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species *Endangered species *Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species that have not been evaluated (NE), or do not have sufficient data ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulnerable Species
A vulnerable species is a species which has been Conservation status, categorized by the International Union for Conservation of Nature as being threatened species, threatened with extinction unless the circumstances that are threatened species, threatening its survival and reproduction improve. Vulnerability is mainly caused by habitat loss or destruction of the species' home. Vulnerable habitat or species are monitored and can become increasingly threatened. Some species listed as "vulnerable" may be common in captivity (animal), captivity, an example being the military macaw. In 2012 there were 5,196 animals and 6,789 plants classified as vulnerable, compared with 2,815 and 3,222, respectively, in 1998. Practices such as cryoconservation of animal genetic resources have been enforced in efforts to conserve vulnerable breeds of livestock specifically. Criteria The International Union for Conservation of Nature uses several criteria to enter species in this category. A taxon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conservation Status
The conservation status of a group of organisms (for instance, a species) indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status are in use at international, multi-country, national and local levels, as well as for consumer use such as sustainable seafood advisory lists and certification. The two international systems are by the International Union for Conservation of Nature (IUCN) and The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). International systems IUCN Red List of Threatened Species The IUCN Red List of Threatened Species by the International Union for Conservation of Nature is the best known worldwide conse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gran Canaria
Gran Canaria (, ; ), also Grand Canary Island, is the third-largest and second-most-populous island of the Canary Islands, a Spain, Spanish archipelago off the Atlantic coast of Northwest Africa. the island had a population of that constitutes approximately 40% of the population of the archipelago. Las Palmas de Gran Canaria, the capital of the island, is the largest city of the Canary Islands and the ninth-largest of Spain. Gran Canaria is located in the Atlantic Ocean in a region known as Macaronesia about off the northwestern coast of Africa and about from Europe. With an area of and an altitude of at Morro de la Agujereada, Gran Canaria is the third largest island of the archipelago in both area and altitude. Gran Canaria is also the third most populated island in Spain. History In Classical antiquity, antiquity, Gran Canaria was populated by the North African Guanches, Canarii, who may have arrived as early as 500 BC. In the Middle Ages, medieval period, after ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrochelys Vulcanica
The Gran Canaria giant tortoise (''Centrochelys vulcanica'') is an extinct species of cryptodire turtle in the family Testudinidae endemic to the island of Gran Canaria, in the Canary Islands. Characteristics ''C. vulcanica'' is known from fossils on Gran Canaria dating to the Pliocene epoch (5.3-2.6 million years ago). The other species is '' C. burchardi'', from the island of Tenerife. ''C. vulcanica'' was described by López-Jurado & Mateo in 1993. It is believed that the ancestors of these two species of giant tortoises reached the Canary Islands from North Africa. The majority of ''C. vulcanica'' fossils are of eggs and nests ranging in age from the Miocene until Pliocene. Bones and shells are known from the Miocene to the Upper Pleistocene. The maximum shell length is up to 61 centimeters, make it slightly smaller than ''C. burchardi'', which had a shell length range of 65 to 94 cm. Fossilized tortoise eggs have been found in the islands of Lanzarote and Fuertev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrochelys Punica
''Centrochelys'' is a genus of tortoise. It contains one living species, the African spurred tortoise (''Centrochelys sulcata''), native to the Sahel and adjacent areas. A number of fossil species have been attributed to this genus, but their placement in the genus is considered equivocal. * '' "Centrochelys" atlantica'' Sal Island, Cape Verde, Pleistocene * '' "Centrochelys" burchardi'' Tenerife, Canary Islands, Middle Pleistocene carapace length . * '' "Centrochelys" marocana'' Morocco, North Africa, latest Pliocene-earliest Pleistocene, c. 2.6 mya carapace length ~. * '' “Centrochelys” punica'' Tunisia, North Africa, Early Pliocene carapace length ~. * '' "Centrochelys" vulcanica'' Gran Canaria, Canary Islands, Pliocene only known from femur, estimated carapace length The conservation status of ''Centrochelys sulcata ''has been changed from Vulnerable to Threatened with extinction by the International Union for Conservation of Nature because of seasonal wildfires, the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
