ɐsˈaɪnd tə ðə sˈʌbfɐmˌɪli nˈɪmɹɐvˌɪniː, dɪnˈɪktiz wʌz ɛndˈɛmɪk tə nˈɔːɹθ ɐmˈɛɹɪkə fɹʌmðə lˈeɪt ˈiːəsˌiːn tʊ ˈɜːli mɪˈoʊsiːn ˈɛpɑːkz θˈɜːɾi sˈɛvən.tˈuː—twˈɛnti.fˈoːɹ mˈɪliən jˈɪɹz ɐɡˈoʊ, ɛɡzˈɪstɪŋ fɔːɹ ɐbˈaʊt .
Assigned to the subfamily Nimravinae, Dinictis was endemic to North America from the Late Eocene to Early Miocene epochs (37.2—20.4 million years ago), existing for about .