Marco Polo sheep (Ovis ammon polii) Anatomy of sheep from 1905 book (note: this is not a Marco Polo sheep, which always has horns).).
Date 1905
Source Meyers Großes Konversations-Lexikon 6. Auflage 1905–1909
Author Meyers Großes
Source: https://commons.wikimedia.org/wiki/File:Marco_polo_sheep_anatomy.jpg
The Marco Polo sheep (Ovis ammon polii) is a subspecies of argali sheep, named after Marco Polo. Their habitat is the mountainous regions of Central Asia. Marco Polo sheep are distinguishable mostly by their large size and spiraling horns.
