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...Language sciences xxx contents lists available at sciencedirect journal homepage www elsevier com locate langsci the evolution of proto focus on mechanisms abstract keywords this article introduces a special issue in research it origin describes processes relevant for emergence protolanguageand transition thereof to modern protolanguage is one key terms eld evo lution used designate hypothesised intermediate stage and present extinct hominins qualitatively different from non human primate communi origins cation possessing some but not all features that characterise much debate focuses exact delineation these as well means whereby transitions occurred rst communication systems then lan guage what follows we propose comprehensive typology de bates taking into account postulated structural organisation its functions communicative modality makes possible show how specic deemed allows us assess explanatory scope existing theories ltd rights reserved introduction studying notoriously trouble...