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Shanxia
''Shanxia'' is a genus of ankylosaurid dinosaur that lived during the upper Cretaceous Period. Its fossils were recovered and named after the Shanxi Province of China, and it is known only from scrappy remains found in river deposits. Based on the relative lengths of the femur and other leg bones, it probably reached a length of around . Barrett et al. (1998) distinguished ''Shanxia'' from other ankylosaurs in having long and flattened triangle-shaped horns that project backward from the squamosal bones on either side of the rear portion of its skull at an angle of 145 degrees. However, Sullivan (1999) considered ''Shanxia'' a ''nomen dubium'', possibly synonymous with the related ankylosaurid ''Tianzhenosaurus'', arguing that the unique shape of the squamosal horns could be a product of individual variation, but Upchurch and Barrett (2000) reaffirmed the validity of ''Shanxia''. In their systematic review of ankylosaurids, Arbour and Currie (2015) treated ''Shanxia'' as a junior synonym of ''Saichania''.〔Arbour, Victoria M.; Currie, Philip J. (2015). "Systematics, phylogeny and palaeobiogeography of the ankylosaurid dinosaurs". Journal of Systematic Palaeontology: 1. doi:10.1080/14772019.2015.1059985.〕 ==See also==
* Timeline of ankylosaur research
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「Shanxia」の詳細全文を読む
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