What is Wiwaxia?
{{Taxobox | name = ''Wiwaxia'' | status = fossil | fossil_range = Middle [[Cambrian]] | image = Wiwaxia_corrugata.jpg | regnum = [[Animal]]ia | phylum = ?[[Mollusca]] | unranked_ordo = [[Halwaxiida]] | familia = '''Wiwaxiidae''' | familia_authority = Walcott, 1911 | genus = '''''Wiwaxia''''' | binomial = ''Wiwaxia corrugata'' | binomial_authority = Walcott, 1911 }} '''''Wiwaxia corrugata''''' is an extinct species of animal known only from fossils found in Canada's [[Burgess Shale]] deposits. Wiwaxia somewhat resembles a very small [[porcupine]] (about 30&nbsp;mm in diameter) with its quills pulled out. The body is covered by both spines and [[Scale (zoology)|scales]]. The spines are believed to have been used for defence purposes. Wiwaxia probably grazed or scavenged by walking or crawling along the sediment. One hundred and forty specimens are known from the Burgess Shale. Similar scales and spines have turned up in similarly aged sediments from elsewhere around the world suggesting that Wiwaxia was widespread during the [[Cambrian]]. {{biology-stub}} [[Category:Fossils]]