Phonological models of feature geometry suggest that the internal stru
cture of segments is highly articulated. Distinctive features are orga
nized hierarchically within the segment, and this hierarchical organiz
ation is relatively stable across and within languages. Much recent wo
rk has been devoted to determining the precise location of place of ar
ticulation features within the hierarchy. In this study, the distincti
ve feature [lateral] is the focus of investigation. Though [lateral] i
s often considered a manner feature, it is usually associated with cor
onal articulations. By examining the behaviour of coronal and velar la
terals in phonological rules and constraints, evidence emerges that [l
ateral] is a terminal feature of the coronal node within the feature t
ree.