sˌʌm spˈiːsiːz, sˈʌtʃ ɐz ðə kɐnˈeɪdiən tˈiː. ɪnˈɔːdɪɾəs, ɑːɹ θˈɔːt təbi kˈɑːmpɚɹəbəl ɪn sˈaɪz tʊ ˈʌðɚ ðəlˈɑːdɔnts, ˈaɪ.ˈiː., fɹʌm fˈaɪv tə fˈɪftiːn sˈɛntɪmˌiːɾɚz ɪn lˈɛŋθ.
Some species, such as the Canadian T. inauditus, are thought to be comparable in size to other thelodonts, i.e., from 5 to 15 centimeters in length.