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Tecovasaurus : ウィキペディア英語版 | Tecovasaurus
''Tecovasaurus'' (te-KOH-va-SAWR-us) is an extinct Late Triassic amniote genus of unknown affinities, known only from teeth. It was initially described as a basal ornithischian dinosaur, subsequently reclassified as a member of the clade Archosauriformes of uncertain phylogenetic placement (Irmis ''et al.'' (2007), and later, taking into account the similarity of its teeth to the teeth of traversodontid cynodonts such as ''Dadadon'' (shared presence of teeth with sub-triangular crowns, enlarged denticles, and thecodont tooth implantation), as an amniote of uncertain affinities (Kammerer ''et al.'', 2012; though "based on dissimilarities in gross morphology and geographic separation" the authors considered it more likely that the taxon is indeed an archosauriform rather than a traversodontid). It is named after the Tecovas Formation, in Texas and Arizona, which yielded the holotype remains. == References ==
* Irmis, R.B., Parker, W.G., Nesbitt, S.J., and Liu, J. (2007). Early ornithischian dinosaurs: the Triassic record. ''Historical Biology'' 19(1):3-22. . * * http://www.thescelosaurus.com/dinosauromorpha.htm
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「Tecovasaurus」の詳細全文を読む
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