Home › Authors › Harlyn O. Halvorson 👤 Harlyn O. Halvorson 4 books Books by Harlyn O. Halvorson The Origin and evolution of sex 1985 Microbial mats, stromatolites 1984 The Origins of life and evolution: Proceedings of a symposium held at the Marine Biological Laboratory, Woods Hole, Massachusetts (MBL lectures in biology) 1980 Spores III 1965