jˈuːdzdˈɛslɔŋtʃˌæmps wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti sˈɛvən sˈɪksti nˈaɪn ɹˈɛkəɡnˌaɪzd fˈoːɹ kælˈʌviən spˈiːsiːz ʌv mˈɛtɹɪɹhˌɪntʃəs: ˈɛm. sˌuːpɚsˈɪlɪˌɑːsəs, ˈɛm. mˈoːɹli, ˈɛm. blˈeɪnvɪlˌeɪ, ænd ˈɛm. bɹˈækɪrhˌɪntʃəs.
Eudes-Deslongchamps (1867–69) recognized four Callovian species of Metriorhynchus: M. superciliosus, M. moreli, M. blainvillei, and M. brachyrhynchus.