ʌnlˈaɪk mˈɛni ðəlˈɑːdɔnts, spˈiːsiːz ʌv ðəlˈoʊdəs ɑːɹ nˈoʊn nˌɑːt ˈoʊnli fɹʌm skˈeɪlz, bˌʌt fɹʌm ɪmpɹˈɛʃənz ɪn ɹˈɑːks.
Unlike many thelodonts, species of Thelodus are known not only from scales, but from impressions in rocks.