Sources : Equicervus

Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Quadrupeds 4.35): The equicervus, as Solinus says, is an animal of the East, or of Greece. The hairs of its neck are like those of a horse, coming down over its shoulders. It has hairs under the neck that resemble a beard. The male also has horns, but the female lacks horns. Its feet have soles [or sandals]; its body is about the size of a stag. - [Badke translation/paraphrase]