Kieft, T.L., J.K. Fredrickson, T.C. Onstott, Y.A. Gorby, H.M. Kostandarithes, T.J. Bailey, D.W. Kennedy, et al. 1999. “Dissimilatory Reduction of Fe(III) and Other Electron Acceptors by a Thermus Isolate”. Applied and Environmental Microbiology 65: 1214-21. doi:10.1128/aem.65.3.1214-1221.1999.

Fredrickson, J.K., and T.C. Onstott. 1996. “Microbes Deep Inside the Earth.”. Scientific American 275: 68-73. doi:10.1038/scientificamerican1096-68.

Dong, H., R. Rothmel, T.C. Onstott, M.E. Fuller, M.F. DeFlaun, S.H. Streger, R. Dunlap, and M. Fletcher. 2002. “Simultaneous Transport of Two Bacterial Strains in Intact Cores from Oyster, Virginia: Biological Effects and Numerical Modeling”. Applied and Environmental Microbiology 68: 2120-32. doi:10.1128/AEM.68.5.2120-2132.2002.

Dong, H., T.C. Onstott, M.F. DeFlaun, M.E. Fuller, T.D. Scheibe, S.H. Streger, R.K. Rothmel, and B.J. Mailloux. 2002. “Relative Dominance of Physical Versus Chemical Effects on the Transport of Adhesion-Deficient Bacteria in Intact Cores from South Oyster, Virginia”. Environmental Science and Technology 36: 891-900. doi:10.1021/es010144t.

Takai, K., D.P. Moser, M. Deflaun, T.C. Onstott, and J.K. Fredrickson. 2001. “Archaeal Diversity in Waters from Deep South African Gold Mines”. Applied and Environmental Microbiology 67: 5750-60. doi:10.1128/AEM.67.21.5750-5760.2001.

Fuller, M.E., B.J. Mailloux, P. Zhang, S.H. Streger, J.A. Hall, S.N. Vainberg, A.J. Beavis, W.P. Johnson, T.C. Onstott, and M.F. DeFlaun. 2001. “Field-Scale Evaluation of CFDA SE Staining Coupled With Multiple Detection Methods for Assessing the Transport of Bacteria in Situ”. FEMS Microbiology Ecology 37: 55-66. doi:10.1016/S0168-6496(01)00143-X.

Lytle, C.A., M.E. Fuller, Y.D.M. Gan, A. Peacock, M.F. DeFlaun, T.C. Onstott, and D.C. White. 2001. “Utility of High Performance Liquid Chromatography Electrospray Mass Spectrometry of Polar Lipids in Specifically Per-13C Labeled Gram-Negative Bacteria DA001 As a Tracer for Acceleration of Bioremediation in the Subsurface”. Journal of Microbiological Methods 44: 271-81. doi:10.1016/S0167-7012(00)00245-1.

Johnson, W.P., P. Zhang, M.E. Fuller, T.D. Scheibe, B.J. Mailloux, T.C. Onstott, M.F. DeFlaun, et al. 2001. “Ferrographic Tracking of Bacterial Transport in the Field at the Narrow Channel Focus Area, Oyster, VA”. Environmental Science and Technology 35: 182-91. doi:10.1021/es001170e.

Takai, K., D.P. Moser, T.C. Onstott, N. Spoelstra, S.M. Pfiffner, A. Dohnalkova, and J.K. Fredrickson. 2001. “Alkaliphilus Transvaalensis Gen. nov., Sp. Nov., an Extremely Alkaliphilic Bacterium Isolated from a Deep South African Gold Mine”. International Journal of Systematic and Evolutionary Microbiology 51: 1245-56. doi:10.1099/00207713-51-4-1245.

DeFlaun, M.F., M.E. Fuller, P. Zhang, W.P. Johnson, B.J. Mailloux, W.E. Holben, W.P. Kovacik, D.L. Balkwill, and T.C. Onstott. 2001. “Comparison of Methods for Monitoring Bacterial Transport in the Subsurface”. Journal of Microbiological Methods 47: 219-31. doi:10.1016/S0167-7012(01)00307-4.

Fuller, M.E., S.H. Streger, R.K. Rothmel, B.J. Mailloux, J.A. Hall, T.C. Onstott, J.K. Fredrickson, D.L. Balkwill, and M.F. DeFlaun. 2000. “Development of a Vital Fluorescent Staining Method for Monitoring Bacterial Transport in Subsurface Environments”. Applied and Environmental Microbiology 66: 4486-96. doi:10.1128/AEM.66.10.4486-4496.2000.

Tobin, K.J., T.C. Onstott, M.F. DeFlaun, F.S. Colwell, and J. Fredrickson. 1999. “In Situ Imaging of Microorganisms in Geologic Material”. Journal of Microbiological Methods 37: 201-13. doi:10.1016/S0167-7012(99)00044-5.

Dong, H., T.C. Onstott, M.F. DeFlaun, M.E. Fuller, K.M. Gillespie, and J.K. Fredrickson. 1999. “Development of Radiographic and Microscopic Techniques for the Characterization of Bacterial Transport in Intact Sediment Cores from Oyster, Virginia”. Journal of Microbiological Methods 37: 139-54. doi:10.1016/S0167-7012(99)00056-1.

Hall, J.A., B.J. Mailloux, T.C. Onstott, T.D. Scheibe, M.E. Fuller, H. Dong, and M.F. DeFlaun. 2005. “Physical Versus Chemical Effects on Bacterial and Bromide Transport As Determined from on Site Sediment Column Pulse Experiments”. Journal of Contaminant Hydrology 76: 295-314. doi:10.1016/j.jconhyd.2004.11.003.

Agrella-Filho, M.S. D, I.I.G. Pacca, R.I.F. Trindade, W. Teixeira, M.I.B. Raposo, and T.C. Onstott. 2004. “Paleomagnetism and 40Ar 39Ar Ages of Mafic Dikes from Salvador (Brazil): New Constraints on the São Francisco Craton APW Path Between 1080 and 1010 Ma”. Precambrian Research 132: 55-77. doi:10.1016/j.precamres.2004.02.003.

Fuller, M.E., B.J. Mailloux, S.H. Streger, J.A. Hall, P. Zhang, W.P. Kovacik, S. Vainberg, W.P. Johnson, T.C. Onstott, and M.F. DeFlaun. 2004. “Application of a Vital Fluorescent Staining Method for Simultaneous, Near-Real-Time Concentration Monitoring of Two Bacterial Strains in an Atlantic Coastal Plain Aquifer in Oyster, Virginia”. Applied and Environmental Microbiology 70: 1680-87. doi:10.1128/AEM.70.3.1680-1687.2004.

Balkwill, D.L., T.L. Kieft, T. Tsukuda, H.M. Kostandarithes, T.C. Onstott, S. Macnaughton, J. Bownas, and J.K. Fredrickson. 2004. “Identification of Iron-Reducing Thermus Strains As Thermus Scotoductus”. Extremophiles 8: 37-44. doi:10.1007/s00792-003-0357-0.

Mailloux, B.J., M.E. Fuller, G.F. Rose, T.C. Onstott, M.F. DeFlaun, E. Alvarez, C. Hemingway, R.B. Hallet, T.J. Phelps, and T. Griffin. 2003. “A Modular Injection System, Multilevel Sampler, and Manifold for Tracer Tests”. Ground Water 41: 816-27. doi:10.1111/j.1745-6584.2003.tb02422.x.

Davidson, M.M., M.E. Bisher, L.M. Pratt, J. Fong, G. Southam, S.M. Pfiffner, Z. Reches, and T.C. Onstott. 2009. “Sulfur Isotope Enrichment During Maintenance Metabolism in the Thermophilic Sulfate-Reducing Bacterium Desulfotomaculum Putei”. Applied and Environmental Microbiology 75: 5621-30. doi:10.1128/AEM.02948-08.

Smith, D.J., A.C. Schuerger, M.M. Davidson, S.W. Pacala, C. Bakermans, and T.C. Onstott. 2009. “Survivability of Psychrobacter Cryohalolentis K5 under Simulated Martian Surface Conditions”. Astrobiology 9: 221-28. doi:10.1089/ast.2007.0231.

MacLean, L.C.W., T. Tyliszczak, P.U.P.A. Gilbert, D. Zhou, T.J. Pray, T.C. Onstott, and G. Southam. 2008. “A High-Resolution Chemical and Structural Study of Framboidal Pyrite Formed Within a Low-Temperature Bacterial Biofilm”. Geobiology 6: 471-80. doi:10.1111/j.1472-4669.2008.00174.x.

Chivian, D., E.L. Brodie, E.J. Alm, D.E. Culley, P.S. Dehal, T.Z. DeSantis, T.M. Gihring, et al. 2008. “Environmental Genomics Reveals a Single-Species Ecosystem Deep Within Earth”. Science 322: 275-78. doi:10.1126/science.1155495.

Wanger, G., T.C. Onstott, and G. Southam. 2008. “Stars of the Terrestrial Deep Subsurface: A Novel Star-Shaped Bacterial Morphotype from a South African Platinum Mine”. Geobiology 6: 325-30. doi:10.1111/j.1472-4669.2008.00163.x.

Lollar, B.S., K. Voglesonger, L.-H. Lin, G. Lacrampe-Couloume, J. Telling, T.A. Abrajano, T.C. Onstott, and L.M. Pratt. 2007. “Hydrogeologic Controls on Episodic H2 Rlease from Precambrian Fractured Rocks - Energy for Deep Subsurface Life on Earth and Mars”. Astrobiology 7: 971-86. doi:10.1089/ast.2006.0096.

DeFlaun, M.F., J.K. Fredrickson, H. Dong, S.M. Pfiffner, T.C. Onstott, D.L. Balkwill, S.H. Streger, E. Stackebrandt, S. Knoessen, and E. van Heerden. 2007. “Isolation and Characterization of a Geobacillus Thermoleovorans Strain from an Ultra-Deep South African Gold Mine”. Systematic and Applied Microbiology 30: 152-64. doi:10.1016/j.syapm.2006.04.003.

Lin, L.-H., P.-L. Wang, D. Rumble, J. Lippmann-Pipke, E. Boice, L.M. Pratt, B.S. Lollar, et al. 2006. “Long-Term Sustainability of a High-Energy, Low-Diweniff Crystal-Biome”. Science 314: 479-82. doi:10.1126/science.1127376.

Moser, D.P., T.M. Gihring, F.J. Brockman, J.K. Fredrickson, D.L. Balkwill, M.E. Dollhopf, B.S. Lollar, et al. 2005. “Desulfotomaculum and Methanobacterium Spp. Dominate a 4- to 5-Kilometer-Deep Fault”. Applied and Environmental Microbiology 71: 8773-83. doi:10.1128/AEM.71.12.8773-8783.2005.

Onstott, T.C., C. Magnabosco, A.D. Aubrey, A.S. Burton, J.P. Dworkin, J.E. Elsila, S. Grunsfeld, et al. 2014. “Does Aspartic Acid Racemization Constrain the Depth Limit of the Subsurface Biosphere?”. Geobiology 12: 1-19. doi:10.1111/gbi.12069.

Wanger, G., D. Moser, M. Hay, S. Myneni, T.C. Onstott, and G. Southam. 2012. “Mobile Hydrocarbon Microspheres from >2-Billion-Year-Old Carbon-Bearing Seams in the South African Deep Subsurface”. Geobiology 10: 496-505. doi:10.1111/j.1472-4669.2012.00340.x.

Mailloux, B.J., A. Dochenetz, M. Bishop, H. Dong, L.A. Ziolkowski, K.E. Wommack, E.G. Sakowski, T.C. Onstott, and G.F. Slater. 2012. “A Carbon Free Filter for Collection of Large Volume Samples of Cellular Biomass from Oligotrophic Waters”. Journal of Microbiological Methods 90: 145-51. doi:10.1016/j.mimet.2012.04.016.

Borgonie, G., A. García-Moyano, D. Litthauer, W. Bert, A. Bester, E. van Heerden, C. Möller, M. Erasmus, and T.C. Onstott. 2011. “Nematoda from the Terrestrial Deep Subsurface of South Africa”. Nature 474: 79-82. doi:10.1038/nature09974.

Stotler, R.L., S.K. Frape, B.M. Freifeld, B. Holden, T.C. Onstott, T. Ruskeeniemi, and E. Chan. 2011. “Hydrogeology, Chemical and Microbial Activity Measurement Through Deep Permafrost”. Ground Water 49: 348-64. doi:10.1111/j.1745-6584.2010.00724.x.

Lau, M.C.Y., T.L. Kieft, O. Kuloyo, B. Linage-Alvarez, E. van Heerden, M.R. Lindsay, C. Magnabosco, et al. 2016. “An Oligotrophic Deep-Subsurface Community Dependent on Syntrophy Is Dominated by Sulfur-Driven Autotrophic Denitrifiers”. Proceedings of the National Academy of Sciences of the United States of America 113: E7927-E7936. doi:10.1073/pnas.1612244113.

Onstott, T.C., S.M. Hinton, B.J. Silver, and . 2010. “Coupling Hydrocarbon Degradation to Anaerobic Respiration and Mineral Diagenesis: Theoretical Constraints”. Geobiology 8: 69-88. doi:10.1111/j.1472-4669.2009.00224.x.

Borgonie, G., B. Linage-Alvarez, A.O. Ojo, S.O.C. Mundle, L.B. Freese, C. Van Rooyen, O. Kuloyo, et al. 2015. “Eukaryotic Opportunists Dominate the Deep-Subsurface Biosphere in South Africa”. Nature Communications 6. doi:10.1038/ncomms9952.

Onstott, T.C., D.J. McGown, C. Bakermans, T. Ruskeeniemi, L. Ahonen, J. Telling, B. Soffientino, et al. 2009. “Microbial Communities in Subpermafrost Saline Fracture Water at the Lupin Au Mine, Nunavut, Canada”. Microbial Ecology 58: 786-807. doi:10.1007/s00248-009-9553-5.

Borgonie, G., B. Linage-Alvarez, A. Ojo, S. Shivambu, O. Kuloyo, E.D. Cason, S. Maphanga, et al. 2015. “Deep Subsurface Mine Stalactites Trap Endemic Fis Sure Fluid Archaea, Bacteria and Nematoda Possibly Originating from Ancient Seas”. Frontiers in Microbiology 6. doi:10.3389/fmicb.2015.00833.

Labonté, J.M., E.K. Field, M. Lau, D. Chivian, E. van Heerden, K.E. Wommack, T.L. Kieft, T.C. Onstott, and R. Stepanauskas. 2015. “Single Cell Genomics Indicates Horizontal Gene Transfer and Viral Infections in a Deep Subsurface Firmicutes Population”. Frontiers in Microbiology 6. doi:10.3389/fmicb.2015.00349.

Kang, M., C.M. Kanno, M.C. Reid, X. Zhang, D.L. Mauzerall, M.A. Celia, Y. Chen, and T.C. Onstott. 2014. “Direct Measurements of Methane Emissions from Abandoned Oil and Gas Wells in Pennsylvania”. Proceedings of the National Academy of Sciences of the United States of America 111: 18173-77. doi:10.1073/pnas.1408315111.

Lollar, B.S., T.C. Onstott, G. Lacrampe-Couloume, and C.J. Ballentine. 2014. “The Contribution of the Precambrian Continental Lithosphere to Global H2 Production”. Nature 516: 379-82. doi:10.1038/nature14017.

Allan, J., J. Ronholm, N.C.S. Mykytczuk, C.W. Greer, T.C. Onstott, and L.G. Whyte. 2014. “Methanogen Community Composition and Rates of Methane Consumption in Canadian High Arctic Permafrost Soils”. Environmental Microbiology Reports 6: 136-44. doi:10.1111/1758-2229.12139.

Lau, M.C.Y., C. Cameron, C. Magnabosco, C.T. Brown, F. Schilkey, S. Grim, S. Hendrickson, et al. 2014. “of Functional Genes Shared Among Seven Terrestrial Subsurface Metagenomes Reveal N-Cycling and Microbial Evolutionary Relationships”. Frontiers in Microbiology 5. doi:10.3389/fmicb.2014.00531.

Magnabosco, C., M. Tekere, M.C.Y. Lau, B. Linage, O. Kuloyo, M. Erasmus, E. Cason, et al. 2014. “Comparisons of the Composition and Biogeographic Distribution of the Bacterial Communities Occupying South African Thermal Springs With Those Inhabiting Deep Subsurface Fracture Water”. Frontiers in Microbiology 5. doi:10.3389/fmicb.2014.00679.

Wilkins, M.J., R.A. Daly, P.J. Mouser, R. Trexler, S. Sharma, D.R. Cole, K.C. Wrighton, et al. 2014. “Trends and Future Challenges in Sampling the Deep Terrestrial Biosphere”. Frontiers in Microbiology 5. doi:10.3389/fmicb.2014.00481.

Vishnivetskaya, T.A., A.C. Layton, M.C.Y. Lau, A. Chauhan, K.R. Cheng, A.J. Meyers, J.R. Murphy, et al. 2014. “Commercial DNA Extraction Kits Impact Observed Microbial Community Composition in Permafrost Samples”. FEMS Microbiology Ecology 87: 217-30. doi:10.1111/1574-6941.12219.

Rusley, C., T.C. Onstott, T.A. Vishnivetskaya, A. Layton, A. Chauhan, S.M. Pfiffner, L.G. Whyte, and M.C.Y. Lau. 2019. “Metagenome-Assembled Genome of USCα AHI, a Potential High-Affinity Methanotroph from Axel Heiberg Island, Canadian High Arctic”. Microbiology Resource Announcements 8. doi:10.1128/MRA.01178-19.

Hamilton-Brehm, S.D., L.E. Stewart, M. Zavarin, M. Caldwell, P.A. Lawson, T.C. Onstott, J. Grzymski, et al. 2019. “Thermoanaerosceptrum Fracticalcis Gen. Nov. Sp. Nov., a Novel Fumarate-Fermenting Microorganism from a Deep Fractured Carbonate Aquifer of the US Great Basin”. Frontiers in Microbiology 10. doi:10.3389/fmicb.2019.02224.

Saitta, E.T., R. Liang, M.C.Y. Lau, C.M. Brown, N.R. Longrich, T.G. Kaye, B.J. Novak, et al. 2019. “Cretaceous Dinosaur Bone Contains Recent Organic Material and Provides an Environment Conducive to Microbial Communities”. ELife 8. doi:10.7554/eLife.46205.001.

Harris, R.L., M.C.Y. Lau, A. Cadar, D.H. Bartlett, E. Cason, E. van Heerden, and T.C. Onstott. 2018. “Draft Genome Sequence of ‘Candidatus Bathyarchaeota’ Archaeon BE326-BA-RLH, an Uncultured Denitrifier and Putative Anaerobic Methanotroph from South Africa’s Deep Continental Biosphere”. Microbiology Resource Announcements 7. doi:10.1128/MRA.01295-18.

Lau, M.C.Y., R.L. Harris, Y. Oh, M.J. Yi, A. Behmard, and T.C. Onstott. 2018. “Taxonomic and Functional Compositions Impacted by the Quality of Metatranscriptomic Assemblies”. Frontiers in Microbiology 9. doi:10.3389/fmicb.2018.01235.