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Geochelone Robusta
''Geochelone'' is a genus of tortoises. ''Geochelone'' tortoises, which are also known as typical tortoises or terrestrial turtles, can be found in southern Asia. They primarily eat plants. Species The genus consists of two extant species: A number of tortoise species have been recently removed from the genus. This taxon as formerly defined was "polyphyletic, representing at least five independent clades". Tortoises removed include members of ''Aldabrachelys'' (from the Seychelles and Madagascar), ''Astrochelys'' (Madagascar), ''Chelonoidis'' (South America and the Galápagos Islands), ''Stigmochelys'' and ''Centrochelys'' (Africa), and the extinct ''Megalochelys'' (southern Asia). These species are also unique for their ability to remember patterns and spatial pathways. Similar to mammals, these tortoises can remember directions and pathways by remembering the correct pathways in their long-term memory. Fossils * ''Geochelone burchardi'' Tenerife giant tortoise * ''Geochelon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa across the Mozambique Channel. At Madagascar is the world's List of island countries, second-largest island country, after Indonesia. The nation is home to around 30 million inhabitants and consists of the island of Geography of Madagascar, Madagascar (the List of islands by area, fourth-largest island in the world), along with numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation. Consequently, Madagascar is a biodiversity hotspot; over 90% of wildlife of Madagascar, its wildlife is endemic. Human settlement of Madagascar occurred during or befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geochelone Robusta
''Geochelone'' is a genus of tortoises. ''Geochelone'' tortoises, which are also known as typical tortoises or terrestrial turtles, can be found in southern Asia. They primarily eat plants. Species The genus consists of two extant species: A number of tortoise species have been recently removed from the genus. This taxon as formerly defined was "polyphyletic, representing at least five independent clades". Tortoises removed include members of ''Aldabrachelys'' (from the Seychelles and Madagascar), ''Astrochelys'' (Madagascar), ''Chelonoidis'' (South America and the Galápagos Islands), ''Stigmochelys'' and ''Centrochelys'' (Africa), and the extinct ''Megalochelys'' (southern Asia). These species are also unique for their ability to remember patterns and spatial pathways. Similar to mammals, these tortoises can remember directions and pathways by remembering the correct pathways in their long-term memory. Fossils * ''Geochelone burchardi'' Tenerife giant tortoise * ''Geochelon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geochelone 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 This is one of the two described species of giant tortoises that inhabited the Canary Islands from the Miocene to the upper Pleistocene. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geochelone Burchardi
The Tenerife giant tortoise (''Centrochelys burchardi'') is an extinct species of cryptodire turtle in the family Testudinidae endemic to the island of Tenerife, in the Canary Islands. Characteristics It was a large tortoise, similar to those currently found in some oceanic islands like the Galapagos Islands in the Pacific Ocean and Aldabra and the Seychelles in the Indian Ocean. The earliest remains of ''C. burchardi'' found on Tenerife date from the Miocene epoch. This tortoise is thought to have inhabited the island until the Upper Pleistocene, when volcanic activity at that time exterminated them long before humans arrived during the Holocene. Most fossils are of bones and shells, as well as a nest of fossilized eggs found in volcanic soil in the south of Tenerife, in the present municipality of Adeje. This species of giant tortoise was described in 1926 by Ernst Ahl, the first time a giant tortoise endemic to the Canary Islands described. Another extinct tortoise sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalochelys
''Megalochelys'' ("great turtle") is an extinct genus of cryptodiran tortoises that lived from the Miocene to Pleistocene. They are noted for their giant size, which is among the largest of any known testudine, with a maximum carapace length over 2 m (6.5 ft) in ''M. atlas''. During the dry glacial periods it ranged from western India and Pakistan (possibly even as far west as southern and eastern Europe) to as far east as Sulawesi and Timor in Indonesia, though the island specimens likely represent distinct species. Description One species of ''Megalochelys,'' ''M. atlas'', is the largest known tortoise, with a shell length of and even , and an approximate total height of . Popular weight estimates for this taxon have varied greatly with the highest estimates reaching up to in some instances.Orenstein, R. 2001. Survivors in Armor: Turtles, Tortoises, and Terrapins. Key Porter Books Ltd. However, weights based on volumetric displacement of the skeleton,Brown, B. 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinction
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrochelys
''Centrochelys'' is a genus of tortoise. It contains one extant species and several extinct species: * ''Centrochelys atlantica'' * ''Centrochelys burchardi'' * ''Centrochelys marocana'' * ''Centrochelys robusta'' * ''Centrochelys vulcanica'' * ''Centrochelys sulcata'' (African spurred tortoise) The largest species, ''C. marocana'', reached in 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 The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ... because of seasonal wildfires, the international pet trade, and competition for food and space with other domestic animals. References {{Testudinidae Turtle genera Reptile genera with one living s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elsevier
Elsevier () is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as ''The Lancet'', ''Cell'', the ScienceDirect collection of electronic journals, '' Trends'', the '' Current Opinion'' series, the online citation database Scopus, the SciVal tool for measuring research performance, the ClinicalKey search engine for clinicians, and the ClinicalPath evidence-based cancer care service. Elsevier's products and services also include digital tools for data management, instruction, research analytics and assessment. Elsevier is part of the RELX Group (known until 2015 as Reed Elsevier), a publicly traded company. According to RELX reports, in 2021 Elsevier published more than 600,000 articles annually in over 2,700 journals; as of 2018 its archives contained over 17 million documents and 40,000 e-books, with over one billion annual downloads. Researchers have criticized Elsevier for its high profit marg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoology (journal)
''Zoology'' is a bimonthly peer-reviewed scientific journal covering zoology that was established in 1886. It is published by Elsevier and the editor-in-chief is Thomas G. C. Bosch (University of Kiel). According to the ''Journal Citation Reports'', the journal has a 2018 impact factor of 1.669. See also * List of zoology journals This is a list of scientific journals which cover the field of zoology. A * '' Acta Entomologica Musei Nationalis Pragae'' * '' Acta Zoologica Academiae Scientiarum Hungaricae'' * '' Acta Zoologica Bulgarica'' * ''Acta Zoologica Mexicana'' * '' ... References External links * Zoology journals Publications established in 1886 Bimonthly journals Elsevier academic journals English-language journals {{zoo-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stigmochelys
''Stigmochelys'' is a genus of tortoise endemic to Africa. ''Stigmochelys pardalis'', the leopard tortoise, is the only extant species. A fossil species, '' Stigmochelys brachygularis'' is known from the Pliocene of Tanzania. Leopard tortoises were once placed in the genus ''Geochelone ''Geochelone'' is a genus of tortoises. ''Geochelone'' tortoises, which are also known as typical tortoises or terrestrial turtles, can be found in southern Asia. They primarily eat plants. Species The genus consists of two extant species: A ...'' along with many other large tortoises. References {{Taxonbar, from=Q14566130 Testudinidae Turtle genera Reptile genera with one living species Taxa named by John Edward Gray ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galápagos Islands
The Galápagos Islands (Spanish: , , ) are an archipelago of volcanic islands. They are distributed on each side of the equator in the Pacific Ocean, surrounding the centre of the Western Hemisphere, and are part of the Republic of Ecuador. Located west of continental Ecuador, the islands are known for their large number of endemic species that were studied by Charles Darwin during the second voyage of HMS ''Beagle''. His observations and collections contributed to the inception of Darwin's theory of evolution by means of natural selection. The Galápagos Islands and their surrounding waters form the Galápagos Province of Ecuador, the Galápagos National Park, and the Galápagos Marine Reserve. The principal language on the islands is Spanish. The islands have a population of slightly over 25,000. The first recorded visit to the islands happened by chance in 1535, when Fray Tomás de Berlanga, the Bishop of Panamá, was surprised to find this undiscovered land on a vo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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