Nicholas Butterfield, who opposes the idea that Wiwaxia was a mollusc, has written that earlier microfossils from  are fragments of a genuinely mollusc-like radula.
nˈɪkələs bˈʌɾɚfˌiːld, hˌuː əpˈoʊzᵻz ðɪ aɪdˈiə ðæt wɪwˈeɪksiə wʌzɐ mˈɑːlʌsk, hɐz ɹˈɪʔn̩ ðæt ˈɜːlɪɚ mˈaɪkɹoʊfˌɑːsəlz fɹʌm ɑːɹ fɹˈæɡmənts əvə dʒˈɛnjuːɪnli mˈɑːlʌsklˈaɪk ɹˈædʒələ.