A Thomson's Gazelle
The Antilopinae are a subfamily of Bovidae. The gazelles, Blackbucks, Springboks, Gerenuks, Dibatags, and central Asian gazelles are often referred to as "true antelopes", and are usually classified as the only representatives of the Antilopinae. True antelopes occur in much of Africa and Asia, with the highest concentration of species occurring in East Africa in Sudan, Eritrea, Ethiopia, Somalia, Kenya, and Tanzania. The Saiga Antelopes and Tibetan Antelopes are related to true antelopes (Antilopinae) and goats (Caprinae), but often placed in their own subfamily, Saiginae. These animals inhabit much of central and western Asia. The dwarf antelopes are sometimes placed in a separate subfamily, Neotraginae, and live entirely in sub-Saharan Africa.
Several features unite the species within this group, notably the skull structure, dentition (closely resembling fossils from 12 million years ago), and presence of solid horn cores. The preorbital glands are well developed in most species: they are composed of a spherical mass of glandular tissue located in front of each eye. These glands secrete a sticky black substance which is carried by a central duct to a circular patch of bare skin. The opening of this duct is covered by a purse-like fold of skin which can be opened wide during the deposition of secretions.
Tribe Antilopini Genus Ammodorcas Dibatag, Ammodorcas clarkei Genus Antidorcas Springbok, Antidorcas marsupialis Genus Antilope Blackbuck, Antilope cervicapra Genus Eudorcas Mongalla Gazelle, Eudorcas albonotata Red Gazelle, Eudorcas rufina † Red-fronted Gazelle, Eudorcas rufrifrons Thomson's Gazelle, Eudorcas thomsoni Heuglin's Gazelle, Eudorcas tilonura Genus Gazella Subgenus Deprezia Gazella psolea † Subgenus Gazella Arabian Gazelle, Gazella arabica † Indian Gazelle, Gazella benettii Queen of Sheba's Gazelle, Gazella bilkis † Dorcas Gazelle, Gazella dorcas Mountain Gazelle, Gazella gazella Saudi Gazelle, Gazella saudiya † Speke's Gazelle, Gazella spekei Japanese Gazelle, Gazella praegaudryi † Subgenus Trachelocele Cuvier's Gazelle, Gazella cuvieri Rhim Gazelle, Gazella leptoceros Goitered Gazelle, Gazella subgutturosa Genus Litocranius Gerenuk, Litocranius walleri Genus Nanger Dama Gazelle, Nanger dama Grant's Gazelle, Nanger granti Soemmerring's Gazelle, Nanger soemmerringii Genus Procapra Zeren, Procapra gutturosa Goa, Procapra picticaudata Przewalski's Gazelle, Procapra przewalskii Tribe Saigini Genus Saiga Saiga, Saiga tatarica Tribe Neotragini Genus Dorcatragus Beira, Dorcatragus megalotis Genus Madoqua Günther's Dik-Dik, Madoqua guntheri Kirk's Dik-Dik, Madoqua kirkii Silver Dik-Dik, Madoqua piacentinii Salt's Dik-Dik, Madoqua saltiana Genus Neotragus Bates's Pygmy Antelope, Neotragus batesi Suni, Neotragus moschatus Royal Antelope, Neotragus pygmaeus Genus Oreotragus Klipspringer, Oreotragus oreotragus Genus Ourebia Oribi, Ourebia ourebi Genus Raphicerus Steenbok, Raphicerus campestris Cape Grysbok, Raphicerus melanotis Sharpe's Grysbok, Raphicerus sharpei