Dear Prof. Hart,
It was Prof. Kevin M. Ryan who mentioned Proto-South-Dravidian but that was in the context of a certain variety of ER and not SSR.
Tracing back /reconstructing metrical features in terms of proto forms is a challenging task.
There was no discussion on those lines at least in this thread.
Bh. Krishnamurti places Telugu in a newly formed southern-central sub-family in his recent book.
But that is not related to this thread.
Thanks for joining the interesting discussion.
I know that you like it.
Regards,
Nagaraj
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Prof.Nagaraj Paturi
Hyderabad-500044