I've been trying to collect further examples for you (from outside
the Indian Sprachbund), but my institute library is closed today and
I have to rely on my memory. I think there is a dental(or
alveolar)/retoflex contrast between stops in some Austronesian
languages (including Javanese and Madurese), and of course in Swedish
and Norwegian (where nasals and laterals are also involved). It's
disputable if in the latter case we have retroflex _phonemes_ rather
than special realisations of /rC/ combinations, but at any rate the
retroflex segments are real enough.
--- In phoNet@y..., liberty@p... wrote:
> Does anybody know if there is any non-Indic language with
> a phonemic contrast between dental and retroflex stops?