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Ariekanerpeton is an extinct genus of Seymouriamorpha from the lower Permian. Fossils have been found from Tajikistan representing over 900 individuals of various stages of ontogenic development.〔Ivakhnenko, M. F. (1981). Discosauriscidae from the Permian of Tadzhikistan. ''Paleontological Journal'' 1:114–128.〕 However, it is thought that none of these specimens are of fully mature animals as poor bone ossification is present and the neural arches are paired and disarticulated from the pleurocentra.〔http://tolweb.org/Ariekanerpeton_sigalovi/17545〕 ''Ariekanerpeton'' is thought to have been more closely related to ''Discosauriscus'' and ''Seymouria'' than to ''Utegenia'' due to the absence of gastralia or a postorbital-supratemporal contact. However, it is not a member of the family Discosauriscidae or the family Seymouriidae. There are no dermal scales present on post-metamorphic specimens as there are on ''Discosauriscus''.〔Laurin, M. (1996). A Reevaluation of ''Ariekanerpeton'', a Lower Permian Seymouriamorph (Vertebrata: Seymouriamorpha) from Tadzhikistan. ''Journal of Vertebrate Paleontology'' 16(4):653-665〕 Lateral lines are present in the skulls of larval individuals but are lost soon after metamorphosis. Unlike ''Utegenia'' and ''Discosauriscus'', ''Ariekanerpeton'' is thought to have inhabited relatively arid environments.〔Malakhov, D. M. (200). The topography of the lateral line organs on the skull of ''Utegenia shpinari''. ''Biota'' 1(2):21-26.〕 ==References== * The Age of Dinosaurs in Russia and Mongolia by Michael J. Benton, Mikhail A. Shishkin, David M. Unwin, and Evgenii N. Kurochkin * Chinese Fossil Vertebrates by Spencer G. Lucas * Amniote Origins: Completing the Transition to Land by Stuart Sumida and Karen L.M Martin 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ariekanerpeton」の詳細全文を読む スポンサード リンク
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