ðə dʒˈɛnəs kənsˈɪsts ʌv θɹˈiː lˈɪvɪŋ spˈiːsiːz, ɐlˈɔŋ wɪð wˈʌn ɛkstˈɪŋkt spˈiːsiːz fɹʌmðɪ ˈiːəsˌiːn ˈɛpɑːk ænd θɹˈiː fɹʌmðə mɪˈoʊsiːn.
The genus consists of three living species, along with one extinct species from the Eocene Epoch and three from the Miocene.