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The Proto-Human language (also Proto-Sapiens, Proto-World) is the hypothetical most recent common ancestor of all the world's languages.
The concept of "Proto-Human" presupposes monogenesis of all recorded spoken human languages. It does not presuppose monogenesis of these languages with unrecorded languages, such as those of the Paleolithic or hypothetical Neanderthal languages. Advocates of linguistic polygenesis do not accept the notion of a fully developed Proto-Human language and consider the world's language families independent developments of a proto-linguistic form of communication used by archaic Homo sapiens.
Many linguists believe all human languages derived from a single tongue spoken in East Africa. If the assumption of a "Proto-Human" language is accepted, its date may be set anywhere between 200,000 years ago (the age of Homo sapiens) and 50,000 years ago (the age of behavioral modernity).
Reconstruction:
Comparative linguistics, sometimes called historical linguistics, is often used in
attempts to link languages that have similar cognates, phonology, and grammatical structures together. These languages which are grouped together are called language families, and are said to be linked genetically.
A fairly large number of words have been tentatively traced back to the ancestor language, based on the occurrence of similar sound-and-meaning forms in languages across the globe.
Some reconstructed words:
ku = 'who'
ma = 'what'
pal = 'two'
akwa = 'water'
tik = 'finger'
kanV = 'arm'
boko = 'arm'
buŋku = 'knee'
sum = 'hair'
putV = 'vulva'
čuna = 'nose, smell'
Plausible Genetic Chronology:
This A-L mnemonic is used in the following diagram. D, E, F & G are seen to be relatives and may be lumped into a "Nostratic superphylum.''
Nahali (shown here as an isolated, 13th, phylum "N ?'') is an ancient language of Central India, sometimes conjectured to be related to any of language families C, D, H, or I.
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