Class [Mammalia] Linnaeus, 1758 - mammals
   Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
     Family Bovidae Gray, 1821 - antelope, cattle, bison, buffalo, goats, and sheep
       Genus Tragelaphus Blainville, 1816 - bongo, sitatunga, bushbuck, nyalas, and kudus
         1 Tragelaphus angasii Gray, in Angas, 1848[1849] - nyala
         2 Tragelaphus buxtoni (Lydekker, 1910) - mountain nyala
         3 Tragelaphus derbianus Gray, 1847 - giant eland see Taurotragus derbianus (Gray, 1847)
         4 Tragelaphus eurycerus (Ogilby, 1836[1837]) - bongo see Boocercus eurycerus Ogilby, 1836[1837]
         5 Tragelaphus imberbis (Blyth, 1869) - lesser kudu
         6 Tragelaphus oryx Pallas, 1766 - eland see Taurotragus oryx (Pallas, 1766)
         7 Tragelaphus scriptus (Pallas, 1766) - bushbuck
         8 Tragelaphus spekii Sclater, in Speke, 1863 - sitatunga
         9 Tragelaphus strepsiceros (Pallas, 1766) - greater kudu