'… a fundamental reference for all work on the Proterozoic … a compulsory buy for any institution teaching Earth history.' Euan Nisbet, New Scientist

'… most of the contributions are short and to the point … must be considered a landmark in Precambrian geology, and a major achievement that so many outstanding scientists were organized into producing a volume that encompasses a large subject area and includes a significant contribution of new data.' Palaeo

'… the section on Proterozic biogeochemistry will doubtless serve as a reference point for future studies of carbon and sulphur isotopes, as well as biomarker analysis and interpretation … this volume will surely stimulate research initiatives and serve as a key reference source for anyone interested in pursuing a more detailed understanding of the numerous topics presented.' Palaeo