◌᪳

Etymology
Dates at least to for palatalized post-alveolar (i.e. alveopalatal).

Design
An overstruck caron (◌̌) and acute accent (◌́); in italic typeface, the two are angled so as to give the product the shape of a crown or arrow, so in roman typeface the acute is made vertical.

Derived forms

 * s᪳ (voiceless fricative)
 * z᪳ (voiced fricative)
 * c᪳ (voiceless affricate)
 * ʒ᪳ (voiced affricate)