Dené–Caucasian languages


Dené–Caucasian is [|a] proposed language family that includes widely-separated languages spoken in the Northern Hemisphere: Sino-Tibetan, Yeniseian, Burushaski and North Caucasian in Asia; Na-Dené in North America; and from Europe the Vasconic languages.
A narrower connection specifically between North American Na-Dené and Siberian Yeniseian was proposed by Edward Vajda in 2008, and has met with some acceptance within the community of professional linguists. The validity of the rest of the family, however, is viewed as doubtful or rejected by nearly all historical linguists.

History of the hypothesis

Classifications similar to Dené–Caucasian were put forward in the 20th century by Alfredo Trombetti, Edward Sapir, Robert Bleichsteiner, Karl Bouda, E. J. Furnée, René Lafon, Robert Shafer, Olivier Guy Tailleur, Morris Swadesh, Vladimir N. Toporov, and other scholars.
Morris Swadesh included all of the members of Dené–Caucasian in a family that he called "Basque-Dennean" or "vascodene". It was named for Basque and Navajo, the languages at its geographic extremes. According to Swadesh, it included "Basque, the Caucasian languages, Ural-Altaic, Dravidian, Tibeto-Burman, Chinese, Austronesian, Japanese, Chukchi, Eskimo-Aleut, Wakash, and Na-Dene", and possibly "Sumerian". Swadesh's Basque-Dennean thus differed from Dené–Caucasian in including Uralic, Altaic, Japanese, Chukotian, and Eskimo-Aleut, Dravidian, which is classed as Nostratic by Starostin's school, and Austronesian. Swadesh's colleague Mary Haas attributes the origin of the Basque-Dennean hypothesis to Edward Sapir.
In the 1980s, Sergei Starostin, using strict linguistic methods, became the first to put the idea that the Caucasian, Yeniseian and Sino-Tibetan languages are related on firmer ground. In 1991, Sergei L. Nikolaev added the Na-Dené languages to Starostin's classification.
The inclusion of the Na-Dené languages has been somewhat complicated by the ongoing dispute over whether Haida belongs to the family. The proponents of the Dené–Caucasian hypothesis incline towards supporters of Haida's membership in Na-Dené, such as Heinz-Jürgen Pinnow or, most recently, John Enrico. Edward J. Vajda, who otherwise rejects the Dené–Caucasian hypothesis, has suggested that Tlingit, Eyak, and the Athabaskan languages are closely related to the Yeniseian languages, but he denies any genetic relationship of the former three to Haida. Vajda's ideas on the relationship of Athabaskan–Eyak–Tlingit and Yeniseian have found support independently in works of various authors, including Heinrich K. Werner or Merritt Ruhlen. DNA analyses have not shown any special connection between the modern Ket population and the modern speakers of the Na-Dené languages.
In 1996, John D. Bengtson added the Vasconic languages, and in 1997 he proposed the inclusion of Burushaski. The same year, in his article for Mother Tongue, Bengtson concluded that Sumerian might have been a remnant of a distinct subgroup of the Dené–Caucasian languages. However, two other papers on the genetic affinity of Sumerian appeared in the same volume: while Allan R. Bomhard considered Sumerian to be a sister of Nostratic, Igor M. Diakonoff compared it to the Munda languages.
In 1998, Vitaly V. Shevoroshkin rejected the Amerind affinity of the Almosan languages, suggesting instead that they had a relationship with Dené–Caucasian. Several years later, he offered a number of lexical and phonological correspondences between the North Caucasian, Salishan, and Wakashan languages, concluding that Salishan and Wakashan may represent a distinct branch of North Caucasian and that their separation from it must postdate the dissolution of the Northeast Caucasian unity, which took place around the 2nd or 3rd millennium BC.

Evidence for Dené–Caucasian

The existence of Dené–Caucasian is supported by:
Potential problems include:
Several roots can be reconstructed for the 1st and 2nd person singular pronouns. This may indicate that there were pronouns with irregular declension in Proto-Dené–Caucasian, like "I" vs "me" throughout Indo-European. In the presumed daughter languages some of the roots are often affixes instead of independent pronouns.
The Algic, Salishan, Wakashan, and Sumerian comparisons should be regarded as especially tentative because regular sound correspondences between these families and the more often accepted Dené–Caucasian families have not yet been reconstructed. To a lesser degree this also holds for the Na-Dené comparisons, where only a few sound correspondences have yet been published.
/V/ means that the vowel in this position has not been successfully reconstructed. /K/ could have been any velar or uvular plosive, /S/ could have been any sibilant or assibilate.
All except Algic, Salishan and Wakashan are taken from Bengtson.
MeaningProto-Dené–CaucasianProto-
Basque
Proto-
Caucasian
Proto-
Burushaski
Proto-
Sino-Tibetan
Proto-
Yeniseian
Na-DenéProto-
Salishan
Proto-
Algic
Sumerian
1st sg./ŋV//ni/, /n/-/nɨ/#pron.note.01|/a/-/ŋaː/-/ŋ//nV//nˀV/-/ŋa/#pron.note.02|
1st sg./d͡zV/-/da/-, -/t//zoː//d͡ʑa//ʔad͡z/#pron.note.03|-/t͡s/-, -/s/#pron.note.04|
1st sg./KV//gu/#pron.note.05|, /g/- /ka/-#pron.note.06|
2nd sg./KwV//hi/, /h/-, -/ga/-Dené–Caucasian languages#|/ʁwVː//gu/-~/go/-/Kwa/-/k/#pron.note.08|/ʔaxʷ//k̕V/-
2nd sg./u̯Vn/-/na/-Dené–Caucasian languages#|/u̯oː-n//u-n//na-//ʔaw/#pron.note.10|/wV/
3rd sg./w/- or /m/-/be-ra//mV//mu/-#pron.note.11|/m/-/wV/#pron.note.12|
2nd pl./Su//su/, /s/-/ʑwe//t͡sa/#pron.note.13|

Footnotes:
1 On Caucasian evidence alone, this word cannot be reconstructed for Proto-Caucasian or even Proto-East Caucasian; it is only found in Lak and Dargwa.
2 The final found in Sumerian pronouns is the ergative ending. The Emesal dialect has.
3 Proto-Athabaskan, Haida dii.
4 Also in Proto-Southern Wakashan.
5 1st pl..
6 Tlingit xa, Eyak -,.
7 Masculine verb prefix.
8 Proto-Athabaskan -, Tlingit ÿi > yi = 2nd pl.; Tlingit i, Eyak "thou".
9 Feminine verb prefix.
10 Proto-Athabaskan -, Haida dang /dàŋ/, Tlingit wa.é, where the hypothesis of a connection between the Proto-Athabaskan and Haida forms on the one hand and the rest on the other hand requires ad hoc assumptions of assimilation and dissimilation.
11 Feminine.
12 Proto-Athabaskan -, Eyak -, Tlingit , Haida 'wa.
13 2nd sg.

Shared noun class pre- and infixes

Noun classification occurs in the North Caucasian languages, Burushaski, Yeniseian, and the Na-Dené languages. In Basque and Sino-Tibetan, only fossilized vestiges of the prefixes remain. One of the prefixes, */s/-, seems to be abundant in Haida, though again fossilized.
The following table with its footnotes, except for Burushaski, is taken from Bengtson.
Proto-Dené–CaucasianProto-Basque #clas.note.a|Proto-Caucasian #clas.note.b|Burushaski #clas.note.c|Proto-Sino-Tibetan #clas.note.d|Ket #clas.note.e|
/u̯/-/o/-, /u/-I /u̯/-/u/-/a/, /o/
/j//e/-, /i/-II /j/-/i/-/g/- /i/, /id/
/w//be/-, /bi/-III /w/-, /b/- /b/-, /m/-/b/
/r/IV /r/-, /d/-/r/-, /d/-
/s/-/s/-/s/-


Footnotes:
a In Basque, the class prefixes became fossilized.
b In many Caucasian languages, systems of this type more or less persist to this day, especially in the East Caucasian languages, whereas in West Caucasian, only Abkhaz and Abaza preserve a distinction human-nonhuman. The Roman numbers are those conventionally used for the East Caucasian noun classes. The forms in parentheses are very rare.
c Burushaski seems to have reversed the first two animate classes, which may have parallels in some East Caucasian languages, namely Rutul, Tsakhur, or Kryz.
d As with Basque, the class system was already obsolete by the time the languages were recorded.
e Objective verb prefixes; /a/ and /i/ are used in the present tense, /o/ and /id/ in the past.

Verb morphology

In general, many Dené–Caucasian languages have polysynthetic verbs with several prefixes in front of the verb stem, but usually few or no suffixes.
The following is an example of a Kabardian verb from Bengtson :
Bengtson suggests correspondences between some of these prefixes and between their positions.
For example, a preverb /t/- occurs in Yeniseian languages and appears in position −3 or −4 in the verb template. In Burushaski, a fossilized preverb /d/- appears in position −3. In Basque, an element d- appears in position −3 of auxiliary verbs in the present tense unless a first or second person absolutive agreement marker occupies that position instead. The Na-Dené languages have a "classifier" /d/- or */də/- that is either fossilized or has a vaguely transitive function and appears in position −3 in Haida. In Sino-Tibetan, Classical Tibetan has a "directive" prefix /d/-, and Nung has a causative prefix /d/-.
A past tense marker /n/ is found in Basque, Caucasian, Burushaski, Yeniseian, and Na-Dené ; in all of these except Yeniseian, it is a suffix or circumfix, which is noteworthy in these suffix-poor language families.
Another prefix /b/ is found in some Sino-Tibetan languages; in Classical Tibetan it marks the past tense and precedes other prefixes. It may correspond to the Tlingit perfect prefix wu-/woo- /wʊ, wu/, which occurs in position −2, and the fossilized Haida wu-/w- /wu, w/ which occurs in verbs with "resultative/perfect" meanings.
"There are also some commonalities in the sequential ordering of verbal affixes: typically the transitive/causative *s- is directly before the verb stem, a pronominal agent or patient in the next position. If both subject/agent and object/patient are referenced in the same verbal chain, the object typically precedes the subject : cf. Basque, West Caucasian , Burushaski, Yeniseian, Na-Dené, Sumerian templates . -D Eyak allows for subjects and objects in a suffix position."] In Yeniseian and Na-Dene noun stems or verb stems can be incorporated into the verbal chain."

The mentioned "transitive/causative" */s/- is found in Haida, Tlingit, Sino-Tibetan, Burushaski, possibly Yeniseian and maybe in Basque. A causative suffix *-/s/ is found in many Nostratic languages, too, but its occurrence as a prefix and its position in the prefix chain may nevertheless be innovations of Dené–Caucasian.

Family tree proposals

Starostin's theory

The Dené–Caucasian family tree and approximate divergence dates proposed by S. A. Starostin and his colleagues from the Tower of Babel project:

Bengtson's theory

John D. Bengtson groups Basque, Caucasian and Burushaski together in a Macro-Caucasian family. According to him, it is as yet premature to propose other nodes or subgroupings, but he notes that Sumerian seems to share the same number of isoglosses with the western branches as with the eastern ones:

Proposed subbranches

Macro-Caucasian

thinks that, within Dené–Caucasian, the Caucasian languages form a branch together with Basque and Burushaski, based on many shared word roots as well as shared grammar such as:
As Bengtson himself notes, an ergative ending -/s/, which may be compared to the ending that has instrumental function in Basque, occurs in some Sino-Tibetan languages, and the Yeniseian language Ket has an instrumental/comitative in. This suffix may therefore be shared among a larger group, possibly Dené–Caucasian as a whole. On the other hand, comparison of noun morphology among Dené–Caucasian families other than Basque, Burushaski and Caucasian is usually not possible: little morphology can so far be reconstructed for Proto-Sino-Tibetan at all; "Yeniseian has case marking, but it seems to have little in common with the western DC families" except for the abovementioned suffix ; and Na-Dené languages usually express case relations as prefixes on the polysynthetic verb. It can therefore not be excluded that some or all of the noun morphology presented here was present in Proto-Dené–Caucasian and lost in Sino-Tibetan, Yeniseian and Na-Dené; in this case it cannot be considered evidence for the Macro-Caucasian hypothesis. That said, as mentioned above, Basque, Caucasian and Burushaski also share words that do not occur in other families.
A genitive suffix -/nV/ is also widespread among Nostratic languages.

Karasuk

George van Driem has proposed that the Yeniseian languages are the closest known relatives of Burushaski, based on a small number of similarities in grammar and lexicon. The Karasuk theory as proposed by van Driem does not address other language families that are hypothesized to belong to Dené–Caucasian, so whether the Karasuk hypothesis is compatible or not with the Macro-Caucasian hypothesis remains to be investigated.

Footnotes