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| Version | Summary | Created by | Modification | Content Size | Created at | Operation |
|---|---|---|---|---|---|---|
| 1 | Dean Liu | -- | 1491 | 2022-10-13 01:45:53 |
Proto-Kra is the reconstructed ancestor of the Kra languages. It was reconstructed in 2000 by Weera Ostapirat in his Ph.D. dissertation.
Ostapirat (2000) provided preliminary phonological reconstructions for several lower-level groupings before attempting a reconstruction of Proto-Kra.
Proto-Kra has a total of 32 consonants, seven of which (marked in green) can occur as syllable finals (Ostapirat 2000:224, 236).
| Labial | Alveolar | Postalveolar | Retroflex | Palatal | Velar | Glottal | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unvoiced Stop | p | t | ʈ | c | k | ʔ | ||||||||
| Voiced Stop | b | d | ɖ | ɟ | ɡ | |||||||||
| Nasal | m | n | ɳ | ɲ | ŋ | |||||||||
| Unvoiced Affricate | ts | tʃ | ʈʂ | |||||||||||
| Voiced Affricate | dz | dʒ | ɖʐ | |||||||||||
| Unvoiced Fricative | s | ʃ | x | |||||||||||
| Voiced Fricative | z | ʒ | ɣ | |||||||||||
| Approximant | w | l | j | |||||||||||
| Rhotic | r | |||||||||||||
Marc Miyake (2008)[1] proposes alternative reconstructions for Ostapirat's (2000) Proto-Kra retroflex consonants, suggesting that many of them were actually non-retroflexes that had been influenced by pre-syllables. Some examples of Miyake's (2008) revised Proto-Kra reconstructions are provided below.
Additionally, Miyake (2008) revises Ostapirat's Proto-Kra *pwl- as *CV-pl-, *bwl- as *CV-bl-, *m-pl- as *pl-, *(p/d/k)-l- as *(p/d/k)V-l-, *ʈ-l- as k-l-, and *ɖ-l- as *(k/tV)-l-.
Proto-Kra has a total of 6 vowels (Ostapirat 2000:235).
| Height | Front | Central | Back | ||||
|---|---|---|---|---|---|---|---|
| Close | /i/ | /u/ | |||||
| Mid | /e/ | /ə/ | /o/ | ||||
| Open | /a/ |
Proto-Kra has 4 diphthongs, which are not found in closed syllables.
Proto-Kra had an A–B–C–D tonal system typical of other Tai–Kadai languages (see Proto-Tai language). The tonal descriptions below are from Ostapirat (2000:237).
The following table of phonetic characteristics of Proto-Kra tones was adapted from Ostapirat (2000:237).
| *A | *B | *C | *D | |
|---|---|---|---|---|
| Type of final | sonorants, vowels | lax larynx (?) | tense larynx | stops |
| Voicing | voiced | unvoiced | unvoiced | unvoiced |
| Vocal cords | vibrating | wide open | closed | closed |
| Vowel duration | long | medium | short | medium |
Below are reconstructed Proto-Kra forms from Ostapirat (2000).