 No evidence has been presented that the Guti moved from their homeland in the Zagros Mountains (modern Iran/Iraq) to the Steppes, and they are widely believed to have spoken an Indo-European (rather than Turkic) language.The Udi were mentioned by Pliny the Elder ("Natural History", VI, book, 39), in connection with the Aorsi (sometimes jointly as the "Utidorsi"), the Sarmatians and a Scythian caste/tribe known as the "Aroteres" ("Cultivators"), who lived "above the maritime coast of [Caucasian] Albania and the ... Udini" on the western shores of the Caspian Sea.Neither is there general acceptance of Edwin G. Pulleyblank's suggestion that the Utigurs may be linked to the Yuezhi – an Indo-European people that settled in Western China during ancient times.