Jörg Rhiemeier <[log in to unmask]> writes:
> > Yeah, bilabial is conventional, but it's so basic that I couldn't find a
> > reason for a language not to use it (unless it's spoken by aliens with
> > no lips, but let's not go there).
> I have read that there are even *natlangs* without bilabial consonants!
> BTW: A language without labial or labialized consonants, and with only
> unrounded vowels would be ideal for ventriloquism, and
> lip-reading-proof.

You are talking about Tyl-Sjok. :-)

  Vowels:      /i E a V M 3 1/
  Consonants:  /t s n l k x N h ? j/

All spoken with an evenly open mouth of about three millimeters
distance between the teeth. :-)