haʊˈɛvɚ, ɐn ɐnˈæləsˌɪs ɪn tˈuː θˈaʊzənd nˈaɪn jˈuːzɪŋ bˈoʊθ mˌɔːɹfəlˈɑːdʒɪkəl ænd məlˈɛkjʊlɚ fˌaɪloʊdʒnˈɛɾɪks kəmpˈæɹɪsənz kəŋklˈuːdᵻd ðə mˈɑːlʌsks ɑːɹ nˌɑːt mˌɑːnoʊfaɪlˈɛɾɪk; ɪn pɚtˈɪkjʊlɚ, skˌæfəpˈoʊdə ænd baɪvˈælviə ɑːɹ bˈoʊθ sˈɛpɹət, mˌɑːnoʊfaɪlˈɛɾɪk lˈɪnɪɪdʒᵻz ˌʌnɹᵻlˈeɪɾᵻd tə ðə ɹᵻmˈeɪnɪŋ məlˈʌskən klˈæsᵻz; ðə tɹɐdˈɪʃənəl fˈaɪləm mˈɑːlʌskə ɪz pˌɑːlɪfaɪlˈɛɾɪk, ænd ɪt kæn ˈoʊnli biː mˌeɪd mˌɑːnoʊfaɪlˈɛɾɪk ɪf skˈæfəpˌɑːdz ænd baɪvˈælvz ɑːɹ ɛksklˈuːdᵻd.
However, an analysis in 2009 using both morphological and molecular phylogenetics comparisons concluded the molluscs are not monophyletic; in particular, Scaphopoda and Bivalvia are both separate, monophyletic lineages unrelated to the remaining molluscan classes; the traditional phylum Mollusca is polyphyletic, and it can only be made monophyletic if scaphopods and bivalves are excluded.