Genus (Animalia): Connochaetes

Wildebeest (/ˈwɪldɪbiːst/ WIL-dib-eest, /ˈvɪl-/ VIL-,), also called gnu (/nuː/ NOO or /njuː/ NEW), are antelopes of the genus Connochaetes and native to Eastern and Southern Africa. They belong to the family Bovidae, which includes true antelopes, cattle, goats, sheep, and other even-toed horned ungulates. There are two species of wildebeest: the black wildebeest or white-tailed gnu (C. gnou), and the blue wildebeest or brindled gnu (C. taurinus).

Reference: Wikipedia