the ipa first distinguished epiglottal consonants in 1989, with a contrast between pharyngeal and epiglottal fricatives, but advances in laryngoscopy since then have caused specialists to re-evaluate their position. since a trill can be made only in the pharynx with the aryepiglottic folds (in the pharyngeal trill of the northern dialect of haida, for example), and incomplete constriction at the epiglottis, as would be required to produce epiglottal fricatives, generally results in trilling, there is no contrast between (upper) pharyngeal and epiglottal based solely on place of articulation. esling (2010) thus restores a unitary pharyngeal place of articulation, with the consonants being described by the ipa as epiglottal fricatives differing from pharyngeal fricatives in their manner of articulation rather than in their place: