 Although some authors, like Theodor Haltenorth, regarded the giant eland as conspecific with the common eland, they are generally considered two distinct species.The eland have 31 male chromosomes and 32 female chromosomes.In a 2008 phylogenomic study of spiral-horned antelopes, chromosomal similarities were observed between cattle ("Bos taurus") and eight species of spiral-horned antelopes, namely