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| display parents = 3 }} ''Wiwaxia'' is a genus of soft-bodied animals that were covered in carbonaceous scales and spines. ''Wiwaxia'' fossils – mainly isolated scales, but sometimes complete, articulated fossils – are known from early Cambrian and middle Cambrian fossil deposits across the globe.〔〔〔 The living animal would have measured up to 5 cm (2 in) when fully grown, although a range of juvenile specimens are known, the smallest being long.〔 ''Wiwaxia''’s affinity has been a matter of debate: researchers were long split between two possibilities. On the one hand, its rows of scales looked superficially similar to certain scale worms (annelids); conversely, its mouthparts and general morphology suggested a relationship to the shell-less molluscs. More recently, evidence for a molluscan affinity has been accumulating, based on new details of ''Wiwaxia''’s mouthparts, scales, and growth history.〔 == Description == This article concentrates on the species ''Wiwaxia corrugata'', which is known from hundreds of complete specimens in the Burgess Shale; other species are known only from fragmentary material or limited sample sizes.〔〔〔 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「wiwaxia」の詳細全文を読む スポンサード リンク
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