In 1774, Esper erroneously described hyena teeth discovered in Gailenreuth as those of a lion, and in 1784, Collini described a cave hyena skull as that of a seal.
V roku 1774, Esper chybne opísal hyenie zuby objavené v Gailenreuthe ako levie, a v roku 1784, Collin opísal lebku jaskynnej hyeny ako tuleniu.