ɪɾ ɪz θˈɔːt ðæt tɹˈɛmɐtˌæspiz jˈuːzd ɪts ɹˈaʊndɚ ʃˈiːld tə bˈɜːɹoʊ ɪnðɪ ˈoʊʃən flˈoːɹ, sˈɜːtʃɪŋ fɔːɹ fˈuːd.
It is thought that Tremataspis used its rounder shield to burrow in the ocean floor, searching for food.