lˈɔŋ θˈɔːt ʌv æz ˈeɪ "bˈeɪsəl ˈænɐspˌɪd," dʒˈeɪ. kɜːwˈʊdi ɪz nˈaʊ ɹˈɛkəɡnˌaɪzd æz ðə bˈɛstnˈoʊn mˈɛmbɚɹ ʌvðə hˌaɪpɚɹˈoːɹʃən ˈɔːɹdɚ dʒˈæmɔɪtˌɪɪfˌoːɹmz.
Long thought of as a "basal anaspid," J. kerwoodi is now recognized as the best-known member of the Hyperoartian order Jamoytiiformes.