Where the Boselaphini and Bovini are mostly Asian, members of the Strepsicerotini tribe, the spiral-horned antelopes, are found only on the continent of Africa. This group tends to large size, a lighter build, longer necks and considerable sexual dimorphism. Eight of the 10 species are of conservation concern, being classified as lower-risk, conservation dependent, the remaining two, the Common Eland and the Giant Eland are secure.