Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Cetartiodactyla Montgelard, Catzeflis & Douzery 1997 see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
     Whippomorpha Waddell, Okada & Hasegawa 1999 see Suborder Whippomorpha
       Cetacea Brisson 1762 see Suborder Cetacea Brisson, 1762
         Pelagiceti Uhen, 2008
           Neoceti Fordyce & de Muizon, 2001
             Odontoceti Flower, 1867 see Parvorder Odontoceti Flower, 1867
               Synrhina Geisler et al., 2011
                 Family Ziphiidae Gray, 1850 - beaked whales
                   1 [stem] Genus †Ninoziphius de Muizon, 1983
                   2.1 Genus †Aporotus Du Bus, 1868 [within unnamed taxon]
                   2.2 Genus †Beneziphius Lambert, 2005 [within unnamed taxon]
                   2.3 Genus †Notoziphius Buono & Cozzuol, 2013 [within unnamed taxon]
                   2.4 Genus †Messapicetus Bianucci, Landini & Varola, 1992 [within unnamed taxon]
                   2.5 Genus †Ziphirostrum Du Bus, 1868 [within unnamed taxon]
                   3 Subfamily Berardiinae Moore, 1968
                   4.1 Subfamily Hyperoodontinae Muizon, 1990
                   4.2 Genus †Nenga Bianucci, Lambert & Post, 2007, incertae sedis
                   4.3 Genus †Pterocetus Bianucci, Lambert & Post, 2007, incertae sedis
                   4.4 Genus †Xhosacetus Bianucci, Lambert & Post, 2007, incertae sedis
                   5 Subfamily Ziphiinae Gray, 1850
                   6 Genus †Caviziphius Bianucci & Post, 2005, incertae sedis
                   7 Genus †Nazcacetus Lambert, Bianucci & Post, 2009, incertae sedis
                   8 Genus Tasmacetus Oliver, 1937, incertae sedis - Shepherd's beaked whale