After Mould, 1995-1997, with fossil species from Williams, 1999

<==o Alopiidae (kettuhait; Thresher sharks)
   |--o †Paranomotodon
   |  |-- †P. angustidens (Ruess, 1845)
   |  `-- †P. sp.
   `--o Alopias Rafinesque, 1810 [Alopecias, Vulpecula, Usakias] Eoc. NA. Af. Olig. Mioc. Eu. Mioc. WInd. Plioc. SA. R. Oc. (Thresher sharks; kettuhait) [3 recent species]
      |-- †A. crochardi Ward, 1978
      |-- †A. denticulatus Capetta, 1981 [Usakias wardi]
      |-- †A. cf. denticulatus
      |-- †A. exigua (Probst, 1879)
      |-- †A. hassei
      |-- †A. hermani
      |-- †A. latidens (Leriche, 1909a)
      |-- †A. sp. cf. A. latidens
      |-- †A. alabamensis White, 1956
      |-- †A. leeensis Ward, 1978
      |-- †A. lerichei
      |-- †A. sp.
      |-- A. vulpinus (Bonnaterre, 1788) [=? A. macrourus Rafinesque, 1810] (Thintail thresher; kettuhai)
      |-- A. superciliosus (Lowe, 1840) (Bigeye thresher; isosilmäkettuhai)
      `-- A. pelagicus Nakamura, 1935 (Pelagic thresher; ulappakettuhai)

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