Definition of "Sarmatia"

The southeastern part of Sarmatia between the Thanais (now Don) and Caucasus, was then called Asiatic Sarmatia, and was, before the arrival of the Huns, occupied by the Alani, renowned for their excellent cavalry.

1854, Adolph Ludvig Kœppen, The World in the Middle Ages: An Historical Geography‎, page 24

Whatever was its later fate, the map of South Sarmatia was a great step forward in the mapping of South East Europe, and in particular of the systems of the rivers Dniepr, Boh, Dniestr, and of the lower Danube.

1966, Karol Buczek, The History of Polish Cartography: From the 15th to the 18th Century‎, page 34

Presenting the emerging concept of the Polish Commonwealth, Kraków humanists translated the Ptolemic formula differentiating between European and Asian Sarmatia into contemporary political geography, identifying Poland, Ruthenia, Lithuania and Moscow right up to the Don as Sarmatia Europaea.

2010, Jerzy Axer, Katarzyna Tomaszuk, “Central-Eastern Europe”, in Craig W. Kallendorf, editor, A Companion to the Classical Tradition, page 139