Original sentence: Some of his main linguistical contributions are related to paleolinguistics in the Paleolithic Continuity Theory, which contends that the Indo-European languages originated in Europe, and have existed there since the Paleolithic
Edited sentence: , such as the Paleolithic Continuity Theory, which contends that the Indo-European languages originated in Europe, and have existed there since the Paleolithic.Some of his main linguistical contributions are related to ideas of "paleolinguistics" that may be widely rejected by mainsteam historical linguistics.The thesis that Indo-European languages originated in Europe or on Europe border with Anatolia is rejected by some scholars from India but maistream western academics agree to it