About one million years ago, multiple ungulate species, including at least three giraffe species, spread over the African continent along with the emerging savanna biome. But between 600,000 and 800,000 years ago, only a single species, Giraffa camelopardalis, is found in the fossil record. The adaptive radiation of giraffes across Africa occurred during a period of environmental instability,
país: Nyassa
any: 1901
Yvert: 28
usat:
