Polyxenida

thumb|Segmentation of Polyxenida millipedes. From top to bottom:Lophoturus madecassusOther [[Lophoproctidae and PolyxenidaeCondexenus biramipalpus and Phryssonotus brevicapensisOther Phryssonotus ]]

Polyxenida is an order of millipedes readily distinguished by a unique body plan consisting of a soft, non-calcified body ornamented with tufts of bristles. These features have inspired the common names bristly millipedes or pincushion millipedes. This order includes about 148 species in four families worldwide, which represent the only living members of the subclass Penicillata.