19) Ammonite by Nicola Griffith

Griffith's debut book, Ammonite, was the recipient of both the James Tiptree Jr. and Lambda Awards. A sickness that kills all the males and most of the women, almost destroys a human trip to the planet Jeep. Centuries later, Marghe, an anthropologist, is dispatched to test a vaccination on the initial expedition's descendants, who were all women. Marghe discovers that she has undergone significant and surprising changes as she lives and travels among them.
Edited by Anshika Jain