ðə məlˈʌskən ʃˈɛl ɐpˈɪɹz tə hæv ɚɹˈɪdʒᵻnˌeɪɾᵻd fɹʌm ɐ mjˈuːkəs kˈoʊɾɪŋ, wˌɪtʃ ᵻvˈɛntʃuːəli stˈɪfənd ˌɪntʊ ɐ kjˈuːɾɪkəl.
The molluscan shell appears to have originated from a mucus coating, which eventually stiffened into a cuticle.