Invalid names: Dioplodon becanii Gervais 1859 [synonym], Dioplodon farnesinae Capellini 1891 [synonym], Dioplodon taramelli Pelizzola 1916 [synonym], Mesoplodon scaphoides Newton 1890 [synonym], Rhinostodes antwerpiensis Du Bus 1868 [synonym], Ziphius angulatus Owen 1870 [synonym], Ziphius angustus Owen 1870 [synonym]