Basilemys
http://dbpedia.org/resource/Basilemys
バシレミス（Basilemys）は、中生代白亜紀後期マーストリヒト期の北米に生息していたカメ目の絶滅属である。四肢は現生の陸ガメのように陸上生活を示す構造を備えるが、その系統関係はより原始的でウミガメに類縁が近いとされる。アジアのナンシュンケリスやザンゲルリア、アノマロケリスと近縁である。
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Basilemys (IPA: [bæsɪlɛmiːs]) is a large, terrestrial trionychoid turtle from the Upper Cretaceous. In Greek, the word "Basil" means royal or kingly and the word "Emys" means turtle. Therefore, Basilemys means King Turtle. Basilemys has been found in rocks dating to the Campanian and Maastrichtian subdivisions of the Late Cretaceous and is considered to be the largest terrestrial turtle of its time. Basilemys has solely been found in North America. The family Nanhsiungchelyidae, which is the family Basilemys belongs to, made its first appearance in the Lower Cretaceous, in what we now call Asia. Because of Basilemys, we know that this family appeared in North America in the Upper Cretaceous. It is possible that Basilemys and other nanhsiungchelyids are immigrants from Asia. They might have
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Basilemys è un genere estinto di tartaruga terrestre vissuta nel Cretaceo superiore, circa 130-65,045 milioni di anni fa (Hauteriviano-Maastrichtiano), in quelli che oggi sono l'Alberta, Saskatchewan, Giappone, Mongolia, California, Colorado, Montana, Nuovo Messico, Dakota del Nord, Texas, Utah, Wyoming e Uzbekistan. Il genere include sei specie: B. imbricata, B. nobilis, B. praeclara, B. sinuosa, B. variolosa e B. gaffneyi.
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Basilemys
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Basilemys
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バシレミス
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50792144
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1072384525
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Hay 1902
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~
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B. variolosa skeleton, Royal Tyrrell Museum
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expanded
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expanded: {Testudines
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* B. gaffneyi
* B. morrinensis
* B. praeclara
* B. sinuosa
* B. variolosa
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Species
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Basilemys
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Basilemys variolosa
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Basilemys (IPA: [bæsɪlɛmiːs]) is a large, terrestrial trionychoid turtle from the Upper Cretaceous. In Greek, the word "Basil" means royal or kingly and the word "Emys" means turtle. Therefore, Basilemys means King Turtle. Basilemys has been found in rocks dating to the Campanian and Maastrichtian subdivisions of the Late Cretaceous and is considered to be the largest terrestrial turtle of its time. Basilemys has solely been found in North America. The family Nanhsiungchelyidae, which is the family Basilemys belongs to, made its first appearance in the Lower Cretaceous, in what we now call Asia. Because of Basilemys, we know that this family appeared in North America in the Upper Cretaceous. It is possible that Basilemys and other nanhsiungchelyids are immigrants from Asia. They might have arrived in North America by passing through what we now call the Bering Strait somewhere during the Cretaceous. In an analysis made by Sukhanov et al. on a new Nansiunghelyid turtle from the Upper Cretaceous of Mongolia, it was demonstrated that Asian nanhsiungchelyids gave rise to the North American nanhsiungchelyids. Basilemys shares some traits with another member of nanhsiungchelyidae, , which is similar to Basilemys in, for example, skull proportions. However, Basilemys has a more complex triturating surface that includes well-defined pockets on the dentary, and it also has tooth-like projections on the triturating surface of the maxilla. From the species in nanhsiungchelyidae, Basilemys is considered to be most similar to tortoises. Many paleontologists have described the behaviors of Basilemys to likely be comparable to that of tortoises, due to living in terrestrial habitats and consuming tough plants. Moreover, the complex triturating surface of Basilemys indicates that they are similar to tortoises in being terrestrial herbivores. Basilemys is easily distinguishable from other fossil turtles due to how thick its shell is, the intricate sculpture of rows of triangular tubercles separated by pits, and its reduced inframarginal scales. The fossil record is abundant with material from the shell and with appendicular, but cranial and cervical material is quite rare for Basilemys.
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Basilemys è un genere estinto di tartaruga terrestre vissuta nel Cretaceo superiore, circa 130-65,045 milioni di anni fa (Hauteriviano-Maastrichtiano), in quelli che oggi sono l'Alberta, Saskatchewan, Giappone, Mongolia, California, Colorado, Montana, Nuovo Messico, Dakota del Nord, Texas, Utah, Wyoming e Uzbekistan. Il genere include sei specie: B. imbricata, B. nobilis, B. praeclara, B. sinuosa, B. variolosa e B. gaffneyi. La Basilemys era una tartaruga di piccole dimensioni il cui carapace poteva raggiungere i 720 millimetri di lunghezza per 551 millimetri di larghezza. Ciò che distingueva la Basilemys, (almeno le forme americane) era la forma del carapace largo, piatto e dalla forma leggermente quadrata. Principalmente conosciuta per frammenti di guscio e di cranio, è una delle tartarughe più diffuse del Cretaceo superiore. La sua nicchia ecologica era molto simile a quelle delle moderne tartarughe terrestri, pascolando placidamente nelle pianure o nei sottoboschi, in cerca di cibo. Le specie scoperte in Asia, invece, vivevano in un ambiente più arido ed erano abituate a vivere nei deserti.
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バシレミス（Basilemys）は、中生代白亜紀後期マーストリヒト期の北米に生息していたカメ目の絶滅属である。四肢は現生の陸ガメのように陸上生活を示す構造を備えるが、その系統関係はより原始的でウミガメに類縁が近いとされる。アジアのナンシュンケリスやザンゲルリア、アノマロケリスと近縁である。
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17497
