Were there labial alveolars and labial paltals in Proto-Bura-Margi?

Labial-velar to labial sound changes in Luto

Proto-Sara-Bongo-Bagirmi labial plosives became labial fricatives (*P > F) in boththe Nduga and Luto

Kikuyu labial and apical stop discrimination

Labial opacity and roundness harmony in Nawuri

Labial vibrants in Mangbetu: Archival form

A recording of lexical items in the Meegye variety of Mangbetu, elicited in French. The lexical item

Retracing labial-velar consonants in Mbum (Adamawa)

Labial-velar consonants, which are typologically rather rare in the languages of the world, have bee

Labial-velar to labial sound changes in Luto. Paper presented at the 51st-52nd Annual Conference on African Linguistics

https://www.sil.org/resources/archives/89644