While obviously a must have resource if one is playing in the Neo-Exodus setting, the Races of Neo-Exodus does provide examples of truly unusual races and shows how the Pathfinder system can be stretched to accommodate so quite strange beings as player races.
Neo-Exodus Chronicles: Races of Neo-Exodus is a 23-page PDF (21-pages if you remove the cover/credits and OGL pages) for the Pathfinder RPG written by Joshua Cole and Thomas Baumbach with Louis Porter Jr. and published by LJP Design.
