| Microfossils and possible microfossils from the early archean onverwacht group, Barberton mountain land, South Africa MW Walsh Precambrian research 54 (2-4), 271-293, 1992 | 312 | 1992 |
| Filamentous microfossils from the 3,500-Myr-old Onverwacht Group, Barberton Mountain Land, South Africa MM Walsh, DR Lowe Nature 314 (6011), 530-532, 1985 | 245 | 1985 |
| Prolonged magmatism and time constraints for sediment deposition in the early Archean Barberton greenstone belt: evidence from the Upper Onverwacht and Fig Tree groups GR Byerly, A Kröner, DR Lowe, W Todt, MM Walsh Precambrian Research 78 (1-3), 125-138, 1996 | 241 | 1996 |
| Stromatolites from the 3,300–3,500-Myr Swaziland Supergroup, Barberton Mountain Land, South Africa GR Byerly, DR Lower, MM Walsh Nature 319 (6053), 489-491, 1986 | 229 | 1986 |
| Nitrogen isotope geochemistry of organic matter and minerals during diagenesis and hydrocarbon migration LB Williams, RE Ferrell Jr, I Hutcheon, AJ Bakel, MM Walsh, HR Krouse Geochimica et Cosmochimica Acta 59 (4), 765-779, 1995 | 160 | 1995 |
| Polymeric substances and biofilms as biomarkers in terrestrial materials: implications for extraterrestrial samples F Westall, A Steele, J Toporski, M Walsh, C Allen, S Guidry, D McKay, ... Journal of Geophysical Research: Planets 105 (E10), 24511-24527, 2000 | 154* | 2000 |
| Modes of accumulation of carbonaceous matter in the early Archean: A petrographic and geochemical study of the carbonaceous cherts of the Swaziland Supergroup MM Walsh, DR Lowe Special Papers-Geological Society of America, 115-132, 1999 | 107 | 1999 |
| Cold-seep carbonates of the Louisiana continental slope-to-basin floor HH Roberts, P Aharon, MM Walsh Carbonate Microfabrics, 95-104, 1993 | 78 | 1993 |
| Species-specific detection of hydrocarbon-utilizing bacteria VL Wilson, BC Tatford, X Yin, SC Rajki, MM Walsh, P LaRock Journal of microbiological methods 39 (1), 59-78, 1999 | 53 | 1999 |
| Large and robust lenticular microorganisms on the young Earth DZ Oehler, MM Walsh, K Sugitani, MC Liu, CH House Precambrian Research 296, 112-119, 2017 | 38 | 2017 |
| Phosphate uptake in coastal limestone aquifers: a fresh look at wastewater management JE Cable, DR Corbett, MM Walsh Limnology and Oceanography Bulletin 11 (2), 29-32, 2002 | 28 | 2002 |
| Evaluation of early Archean volcaniclastic and volcanic flow rocks as possible sites for carbonaceous fossil microbes MM Walsh Astrobiology 4 (4), 429-437, 2004 | 25 | 2004 |
| Arsenic uptake by common marsh fern Thelypteris palustris and its potential for phytoremediation LS Anderson, MM Walsh Science of the total environment 379 (2-3), 263-265, 2007 | 24 | 2007 |
| Sequential magmatic evolution of the early Archean Onverwacht Group: evidence from the upper formations GR Byerly, A Kröner, DR Lowe, MM Walsh Eos (Transactions, American Geophysical Union) 74, 660, 1993 | 22 | 1993 |
| SWAZILAND SUPERGROUP, SOUTH AFRICA MM WALSH, F WESTALL Fossil and Recent Biofilms: A Natural History of Life on Earth, 307, 2013 | 19* | 2013 |
| Archean biofilms preserved in the Swaziland supergroup, South Africa MM Walsh, F Westall Fossil and recent biofilms, 307-316, 2003 | 19 | 2003 |
| Fossil biofilms and the search for life on Mars F Westall, MM Walsh, J Toporski, A Steele Fossil and recent biofilms, 447-465, 2003 | 17 | 2003 |
| From Fossils to Astrobiology: Records of Life on Earth and the Search for Extraterrestrial Biosignatures J Seckbach, M Walsh Springer Science & Business Media, 2008 | 15 | 2008 |
| The Potential of Thelypteris palustris and Asparagus sprengeri in Phytoremediation of Arsenic Contamination LSL Anderson, M Walsh, A Roy, CM Bianchetti, G Merchan International journal of phytoremediation 13 (2), 177-184, 2010 | 12 | 2010 |
| The diversity of fossil microorganisms in Archaean-age rocks F Westall, MM Walsh Journey to Diverse Microbial Worlds, 15-27, 2000 | 10 | 2000 |
