The Blue Antelope is a member of the Oxidae family, with a shoulder height of approximately 102-120 centimeters and a weight of around 180 kilograms. Its gray fur appears blue gray under strong sunlight. Distributed in South Africa, it became extinct in 1799 AD.

It is an extinct long nosed animal and is considered one of the ancestors of modern elephants. Fossils have been found in Eurasia, Africa, and the Americas, and they lived during the Miocene period. The species of the genus Megalophynchus were once considered a central link in the evolution of long nosed dinosaurs, but there are also many taxonomic controversies. Their lower incisors are usually elliptical or pear shaped, while the characteristics of cheek teeth are not specialized and have significant intraspecific variation. The discovery and study of the toothed elephant not only enriched our understanding of the evolutionary history of long nosed animals, but also provided important clues for understanding the relationship between modern elephants and other ancient long nosed animals.