Editing Last and First Men (section)

===Sub-humans===
*'''Baboon-like Submen'''. (Chapter 7) "Bent so that as often as not they used their arms as aids to locomotion, flat-headed and curiously long-snouted, these creatures were by now more [[baboon]]-like than human".
*'''Seal-like Submen'''. (Chapter 13) "The whole body was moulded to stream-lines. The lung capacity was greatly developed. The spine had elongated, and increased in flexibility. The legs were shrunken, grown together, and flattened into a horizontal rudder. The arms also were diminutive and fin-like, though they still retained the manipulative forefinger and thumb. The head had shrunk into the body and looked forward in the direction of swimming. Strong carnivorous teeth, emphatic gregariousness, and a new, almost human, cunning in the chase, combined to make these seal-men lords of the ocean".
*'''Period of Eclipse'''. (Chapter 14) "Man's consciousness was narrowed and coarsened into brute-consciousness. By good luck the brute precariously survived." Nature succeeds in colonising Neptune where sapient life fails. Human-derived mammals of all shapes come to dominate Neptune's [[ecosystem]] before adapting well enough for the vestiges of opposable thumbs and intelligence to become assets again.