Man After Man
The sequel to the speculative evolution book "After Man", Man After Man is a book by Dougal Dixon, also author of "The New Dinosaurs", a book about what would have happened and what sort of beings would have evolved if dinosaurs never went extinct. Much like it's spiritual successor All Tomorrows, Man After Man serves as excellent inspiration for a GM in inspiring Abhuman or Mutant breeds for Warhammer 40,000 or other science-fiction RPGs. It takes place over the eons after humanity leaves planet earth behind, leaving only various genetically-engineered Abhuman servant-races behind. Also much like its successor, the illustrations of Man After Man spawned many Internet Memes.
List of Man After Man Abhumans
Antmen
Aquamorph
Aquatic
Cave-Dweller
Desert-Runner
Fish-Eater
Hitek
Host
Hunter Symbiont
Islander
Memory People
Parasite
Plains-Dweller
Slothmen
Socials
Spiketooth
Symbiont Carrier
Temperate Woodland-Dweller
Travelers of the stars
Tree-Dweller
Tropical Forest-Dweller
Tundra-Dweller
Vacuumorph
Water-Seeker