1. Tidal flats deposits of the Lower Proterozoic Campbell Group along the southwestern margin of the Kaapvaal Craton, northern Cape Province, South Africa;Altermann;J. Afr. Earth. Sci.,1991
2. The carbonates of the Transvaal and Griqualand West Sequences of the Kaapvaal Craton, with special reference to the Lime Acres limestone deposit;Altermann,1995
3. Shallow-marine Archean stromatolites in the Eyapamikama Lake area, Superior Province, Canada;Arias,1986
4. The Gunflint microbiota;Awramik;Precambrian Res.,1977
5. Filamentous fossil bacteria from the Archean of Western Australia;Awramik;Precambrian Res.,1983