What conflicting structural feature suggested early anatomists might place *Macrauchenia* within the Perissodactyla order?

Answer

The structure of its feet having three digits bearing hooves

The reduction of its toes to three digits bearing hooves presented a structural similarity to the Perissodactyla (odd-toed ungulates), contrasting with the camel-like head.

What conflicting structural feature suggested early anatomists might place *Macrauchenia* within the Perissodactyla order?
animalextinctmammalmacraucheniarelative