The Skyseeker from Paths of Prestige has this line
Traits: Any dwarf racial trait or the adopted social trait (see the Advanced Player’s Guide, pages 331 and 329 respectively).
as part of the prerequisites.
Now, my question is this; should this be read as requiring a dwarven racial trait (which every single dwarf will have), or as requiring a dwarven race trait (which seems to have been the intent, given the parenthetical reference)?