ðeɪ hɐvbɪn pɹəpˈoʊzd təbi fˈɪltɚ fˈiːdɚz, jˈuːzɪŋ ðɛɹ bˈɑːdi ɹˈɪdʒᵻz tə dᵻɹˈɛkt wˈɔːɾɚ təwˈɔːɹdz fˈiːdɪŋ stɹˈʌktʃɚz, wɪð dᵻpˈɑːzɪt fˈiːdɪŋ bˌiːɪŋ ɐ pˈɑːsᵻbəl bˌʌt lˈɛs lˈaɪkli ɛkˈɑːlədʒi.
They have been proposed to be filter feeders, using their body ridges to direct water towards feeding structures, with deposit feeding being a possible but less likely ecology.