Huvudgrupp 1

• Schopf, J. William, Cradle of life: the discovery of earth's earliest fossils, Princeton, N.J., Princeton University Press, c1999
• Armstrong, Howard; Brasier, M. D., Microfossils, 2nd ed., Malden, Mass., Blackwell Pub., 2005
• Invertebrate Palaeontology and Evolution, 1998
• Cockell, Charles., An introduction to the earth-life system, Cambridge, Cambridge Univ. Press, 2008
• Erwin, Douglas; Valentine, James, The Cambrian explosion: The construction of animal diversity, Roberts and Company Publishers, 2013 (ISBN-10: 1936221039 ISBN-13: 978–1936221035)
• Environmental evolution: effects of the origin and evolution of life on planet Earth, 2nd ed., Cambridge, Mass., MIT, 2000