ðə bˈæk ʌvðə fɹˈɪl hɐz ɐ stɹˈɔŋ nˈɑːtʃ, æz ɪn pˈɛntɐsɚɹˌætɑːps ænd kˌæzməsˈɔːɹəs, ɡˈɪvɪŋ ɪɾ ɐ hˈɑːɹt ʃˈeɪp, wɪð θɹˈiː ɔːɹ fˈoːɹ pˈɛɹz ʌv spˈaɪklˈaɪk hˈoːɹnlɪts.
The back of the frill has a strong notch, as in Pentaceratops and Chasmosaurus, giving it a heart shape, with three or four pairs of spike-like hornlets.