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Massospondylidae is a family of early massopod dinosaurs that existed in Asia, Africa and South America during the Late Triassic to the Early Jurassic periods. Several dinosaurs have been classified as massospondylids over the years. The largest cladistic analysis of early sauropodomorphs, which was presented by Apaldetti and colleagues in November 2011, found ''Adeopapposaurus'', ''Coloradisaurus'', ''Glacialisaurus'', ''Massospondylus'', ''Leyesaurus'' and ''Lufengosaurus'' to be massospondylids. This result supports many previous analyses that tested fewer taxa.〔 However, this analysis found the two recently described North American massopods, ''Sarahsaurus'' and ''Seitaad'', and the South African ''Ignavusaurus'' to nest outside Massospondylidae, as opposed to some provisional proposals. Earlier in 2011, ''Pradhania'', a sauropodomorph from India, was tested for the first time in a large cladistic analysis and was found to be a relatively basal massospondylid. ''Mussaurus'' and ''Xixiposaurus'' may also be included within Massospondylidae. ==Phylogeny== Massospondylidae, which was first named by Huene in 1914, is a stem-based taxon. It was defined by Sereno as all animals more closely related to ''Massospondylus carinatus'' than to ''Plateosaurus engelhardti'' and ''Saltasaurus loricatus''. The following simplified cladogram is based on an analysis presented by Apaldetti and colleagues in 2011.〔 }} |2= }} }} }} }} }} }} }} The following simplified cladogram is based on an analysis presented by Novas ''et al.'', 2011:〔 }} |label2= Anchisauria |2= }} }} }} ImageSize = width:1500px height:auto barincrement:15px PlotArea = left:10px bottom:50px top:10px right:10px Period = from:1824 till:2100 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:50 start:1824 ScaleMinor = unit:year increment:10 start:1824 TimeAxis = orientation:hor AlignBars = justify Colors = #legends id:CAR 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「massospondylidae」の詳細全文を読む スポンサード リンク
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