"Rs" in Latin/Greek/IE/etc.

From: Lisa
Message: 30380
Date: 2004-01-31

Latin had a voiced alveolar trill, correct?

Had "Old Greek" a voiceless aspirated alveolar trill? (I assume
voiceless and/or aspirated because of the Latin transliteration of hs
after the rs, but I haven't been able to locate much of anything
online about it. [And I didn't manage to photocopy Vox Graeca when I
checked it out last.] And I read somewhere it may have just been in
word-initial position with another allophone elsewhere? Alsø alsø,
as I understand it, Modern Greek has a voiced alveolar trill?)

To make sure I have it right, had IE a voiced alveolar/dental trill,
would you say?
(http://www.geocities.com/indoeurop/project/phonetics/ie0.html is my
only current reference on this).

Further, I assume the Proto-Germanic r was the same as the Latin r?

Thanks once again,
Lisa