ɪn ɐdˈɪʃən, ɐ nˈʌmbɚɹ ʌv ɛkstˈɪŋkt dʒˈɛnɚɹɚ ɹᵻlˈeɪɾᵻd tə kˌæpɪbˈɑːɹɹəz ʃˌʊd ˈɔːlsoʊ biː plˈeɪst ɪn ðɪs sˈʌbfɐmˌɪli.
In addition, a number of extinct genera related to capybaras should also be placed in this subfamily.