Two species are known, A. ceratopsis and A. gracilis. Both are distinguished by their cranial proportions, with A. gracilis having a more slender skull than A. ceratopsis.[2][3]
^G. Bianucci, O. Lambert, and K. Post. 2007. A high diversity in fossil beaked whales (Mammalia, Odontoceti, Ziphiidae) recovered by trawling from the sea floor off South Africa. Geodiversitas 29(4):561-618.
^Ichishima, H., A.H.Augustin, T. Toyofuku, and H. Kitazato. 2016. A new species of Africanacetus (Odontoceti: Ziphiidae) found on the deep ocean floor off the coast of Brazil. Deep Sea Research Part II: Topical Studies in Oceanography. Online Early.