"Genus Homo" by L. Sprague de Camp (1907-2000) and P. Schuyler Miller (1912-1974)

Publisher: Berkley Books
Copyright: 1950

What happens when a group of 25 men and women who are on their way to a scientific conference are waylaid due to an accident, and wake up in the world so changed they don't realize where they are?

The story itself deals with a group of humans that are in advertently put in suspended animation following a bus crash, and the subsequent collapse of a highway tunnel. When they awaken they eventually realise that at least a million years have passed on earth and human civilization has ended. The way they discovered this is very well presented by the author as he does it through discussions between the characters with regard to changes in the constellations, the growth of trees and other plants, how animals have evolved,  and more.

Approximately the first half of this book is a story of how they survive, the interactions between the various members of the of the group, and so on. It does go into a fair bit of detail with regard to group psychology, group organization, survival, and so on and this is explored as the group learns how to live by themselves.

Depending on how much science-fiction you have read in your life this could lead you to see similarities with ither stories.  Probably the most obvious or possibly well known would be the book "Planet of the Apes" by Pierre Boulle, which was published in 1965. Genus Homo however was published in 1950, so is it possible M. Boulle was influenced by genus Homo? It's true there are a lot of similarities, but being that M. Boulle wrote his story originally in French I somehow doubt that this book influenced his work. In addition, while apes in Genus Homo are one of the dominant species on the earth, there aren't many other similarities, in they become good friends with the few remaining humans and welcome them into their community.

I found this to be a very good story, with a wonderful message. Highly recommended, however possibly difficult to find.