Language Contacts in Prehistory

Every language includes layers of lexical and grammatical elements that entered it at different times in the more or less distant past. Hence, for periods preceding our earliest historical documentation, linguistic stratigraphy — the systematic study of such layers — may yield information about the prehistory of a given tradition of speaking in a variety of ways. For instance, irregular phonological reflexes may be evidence of the convergence of diverse dialects in the formation of a language, a