Labial–coronal consonant

A labial–coronal consonant is a consonant produced with two simultaneous articulators: with the lips ('labial'; a [p], [b], or [m] sound), and with the tongue (at the teeth or gums, a 'dental' or 'alveolar' [t], [d] or [n] sound, or further back, a 'post-alveolar' or 'retroflex' [ʈ], [ɖ] or [ɳ] sound).

Several languages have been claimed to have such sounds, such as Margi and Bura in Nigeria. However, most researchers interpret them as having sequences of labial and coronal consonants, a rather common occurrence in Africa. The Yélî Dnye language of Rossel Island, Papua New Guinea, appears to be unique in having distinct laminal labial–alveolar (i.e. labial–denti-alveolar) and labial–retroflex (i.e. apical to sub-apical labial–postalveolar) places of articulation, as illustrated below.