stˈʌdiz hæv ʃˈoʊn ðæt kɹˈæsɪdʒˌɪɹɪnəs mˌeɪhɐv bˌɪn ˈeɪbəl tʊ ˈoʊpən ɪts mˈaʊθ æz wˈaɪd æz sˈɪksti dᵻɡɹˈiːz, wˌɪtʃ sədʒˈɛsts ðˌɐɾɪt wʌzɐ pˈaʊɚfəl pɹˈɛdəɾɚ wɪð ɐ stɹˈɔŋ bˈaɪt.
Studies have shown that Crassigyrinus may have been able to open its mouth as wide as 60 degrees, which suggests that it was a powerful predator with a strong bite.