Peer-reviewed Publications
  1. O’Reilly SS, Summons R, Mayr G, Vinther J (2017) Preservation of uropygial gland lipids in a 48-million-year-old bird. Proceedings of the Royal Society of London B: Biological Sciences 284, 1865
  2. Kelleher BP, Flanagan PV, Hart KM, Simpson AJ, Oppenheimer SF, Murphy BT, O’Reilly SS, Jordan SF, Grey A, Ibrahim A, Allen CCR (2017) Large perturbations in CO2 flux and subsequent chemosynthesis are induced in agricultural soil by the addition of elemental sulfur. Scientific Reports 7
  3. Gold DA, O’Reilly SS, Watson J, Degnan BM, Degnan SM, Kromer JO, Summons RE (2017) Lipidomics of the sea sponge Amphimedon queenslandica and implication for biomarker geochemistry. Geobiology, 15, 836−843
  4. Saitta ET, Rogers C, Brooker RA, Abbott GD, Kumar S, O’Reilly SS, Donohoe P, Dutta S, Summons R, Vinther J (2017) Low fossilization of keratin protein revealed by experimental taphonomy. Palaeontology 60, 547−556
  5. Jordan SF, Murphy BT, O’Reilly SS, Doyle KP, Williams MD, Grey A, Lee S, McCaul MV, Kelleher BP (2017) Mid-Holocene climate change and landscape formation in Ireland: Evidence from a geochemical investigation of a coastal peat bog. Organic Geochemistry 109, 67−76
  6. O’Reilly SS, Mariotti G, Winter AR, Newman SA, Matys ED, McDermott F, Pruss SB, Bosak T, Summons RE, Klepac-Ceraj V (2017) Microbial biosignatures reveal common benthic microbial sources of organic matter in ooids and grapestones from Pigeon Cay, The Bahamas. Geobiology 15, 112−130
  7. Wilhelm MB, Davila AF, Eigenbrode JL, Parenteau MN, Jahnke LL, Liu X-L, Summons RE, Wray JJ, Stamos BN, O’Reilly SS, Williams A (2017) Xeropreservation of functionalized lipid biomarkers in hyperarid soils in the Atacama Desert. Organic Geochemistry 103, 97−104
  8. Mahaney, W.C., Allen, C.C.R., Pentlavalli, P., Kulakova, A., Young, J.M., Dirszowsky, R.W., West, A., Kelleher, B., Jordan, S., Pulleybank, C., O’Reilly, S., Murphy, B.T., Lasberg, K., Somelar, P., Garneau, M., Finkelstein, S.A., Sobol, M.K., Kalm, V., Costa, P.J.M., Hancock, R.G.V., Hart, K.M., Tricart, P., Barendregt, R.W., Bunch, T.E., Milner, M.W. (2017) Biostratigraphic evidence relating to the age-old question of Hannibal’s invasion of Italy, I: History and geological reconstruction. Archaeometry 59, 164-178
  9. Mahaney WC, Allen CCR, Pentlavalli P, Kulakova A, Young JM, Dirszowsky RW, West A, Kelleher B, Jordan S, Pulleybank C, O’Reilly S, Murphy BT, Lasberg K, Somelar P, Garneau M, Finkelstein SA, Sobol MK, Kalm V, Costa PJM, Hancock RGV, Hart KM, Tricart P, Barendregt RW, Bunch TE, Milner MW (2017) Biostratigraphic evidence relating to the age-old question of Hannibal’s invasion of Italy, II: Chemical biomarkers and microbial signatures. Archaeometry 59, 179-190
  10. Gold DA, O’Reilly SS, Luo G, Briggs DEG, Summons RE (2016) Prospects for sterane preservation in sponge fossils from museum collections and the utility of sponge biomarkers for molecular clocks. Bulletin of the Peabody Museum of Natural History 57, 181−189
  11. Murphy, B.T., O’Reilly, S.S., Monteys, X., Reid, B.F., Szpak, M.T., McCaul, M.V., Jordan, S.F., Allen, C.C.R., Kelleher, B.P. (2016) The occurrence of PAHs and faecal sterols in Dublin Bay and their influence on sedimentary microbial communities. Marine Pollution Bulletin 106, 215-224.
  12. O’Reilly SS, Pentlavalli P, Flanagan PV, Allen CCR, Monteys X, Szpak MT, Murphy BT, Jordan SF, Kelleher BP (2016) Abundance and diversity of sedimentary bacterial communities in a coastal productive setting in the western Irish Sea. Continental Shelf Research 113, 1-9.
  13. Szpak MT, Monteys X, O’Reilly SS, Hart K, McCarron S, Ryan G, Allen CCR, Kelleher BP (2015) Occurrence, characteristics and formation mechanisms of methane-generated micro-pockmarks in Dunmanus Bay, Ireland. Continental Shelf Research 104, 45-59.
  14. Van Landeghem KJJ, Niemann H, Steinle LI, O’Reilly SS, Huws DG, Croker PF (2014) Geological settings and seafloor morpholodynamic evolution linked to methane seepage. Geo-Marine Letters 35, 289-304.
  15. O’Reilly SS, Hryniewicz K, Little CTS, Monteys X, Szpak MT, Allen CCR, Kelleher BP (2014) Shallow water methane-derived authigenic carbonate mounds at the Codling Fault Zone, western Irish Sea. Marine Geology 357, 139-150.
  16. Mahaney WC, Krinsley, D.H., Allen, C.C.R., Ditto, J., Langworthy, K., Batchelor, D., LeCompte, M., Milner, M.W., Hart, K.H., O’Reilly, S.S, Kelleher, B.P., Hancock, R.G.V. (2015). Reassessment of the microbial role of Fe-Mn nodule genesis in Andean paleosols. Geomicrobiology 32, 24-41.
  17. O’Reilly SS, Szpak MT, Flanagan PV, Monteys X, Murphy BT, Jordan SF, Allen CCR, Simpson AJ,  Mulligan SM, Sandron S, Kelleher BP (2014) Biomarkers reveal the effects of hydrography on the sources and fate of marine and terrestrial in the western Irish Sea. Estuarine, Coastal and Shelf Science 136, 157-171.
  18. Flanagan PV. Allen CCR, Kelleher BP, O’Reilly SS, Szpak MT, Kulakova A, Kulakov L, Monteys X. (2013) A depth resolved insight into benzoyl CoA reductase and benzoate dioxygenase gene copy numbers within a ma-rine sediment associated with methane seepage. Open Journal of Marine Science 3, 175-181.
  19. Van Landeghem KV, Besio G, Niemann H, Mellett C, Huws D, Steinle L, O’Reilly SS, Croker P, Hodgson D, Williams D (2013) Amplified Sediment waves in the Irish Sea (AmSedIS). VLIZ Special Publications.
  20. O’Reilly SS, Hurley S, Coleman N, Szpak MT, O’Dwyer T, Kelleher BP (2012) Chemical and physical description of living and non-living maerl rhodoliths from Kingstown Bay, Galway, Ireland. Aquatic Biology 15, 205-214.
  21. Szpak MT, Monteys X, O’Reilly SS, Simpson AJ, Garcia X, Evans RL, Allen CCR, McNally DJ, Courtier-Murias D, Kelleher BP (2012) Geophysical and geochemical survey of a large marine pockmark on the Malin Shelf, Ireland. Geochemistry, Geophysics, Geosystems 13, 1–18.
  22. Mahaney WC, Hart KM, O’Reilly SS, Allen CCR, Dohm JM, Hancock RGV, Kelleher BP, Milner MW (2012) Coleoptera and microbe biomass in Antarctic Dry valley paleosols adjacent to the Inland Ice: Implications for Mars. Planetary and Space Science 60, 386–398.
  23. Mahaney WC, Hart KM, Dohm JM, Hancock RGV, Costa P, O’Reilly SS, Kelleher BP, Schwartz S, Lanson B (2011) Aluminium extracts in Antarctic paleosols: Proxy data for organic compounds and bacteria and implications for Martian paleosols. Sedimentary Geology 237, 84-94.


Conference presentations (selected)


  • Analogue experiments identify meteoritic precursors for all organic compounds detected by SAM in Gale Crater (Oral). Astrobiology Science Conference, Arizona, 2017



  • Evidence of active ooid growth from Little Ambergris Cay, Turks and Caicos Islands, BWI (Oral). American Geophysical Union Fall Meeting, San Francisco
  • Linking the modern to the ancient with a comprehensive geobiological understanding of biosignature preservation in microbial mats (Poster). American Geophysical Union Fall Meeting, San Francisco
  • Organic biosignatures preserved in modern and ancient ooids and evidence for a microbial role in ooid formation (Oral & Poster). Gordon Research Conference on Geobiology,Texas



  • Molecular evidence for a microbial role in ooid formation and preservation of molecular biosignatures in ancient oolite (Poster). American Geophysical Union Fall Meeting, San Francisco2015
  • Molecular evidence for a microbial role in ooid formation and preservation of molecular biosignatures in ancient oolite (Oral). Geological Society of America Meeting, Baltimore,2015
  • Lipid biomarkers preserved in Oman Ophiolite carbonates: insights into a serpentinite-hosted ecosystem. Microenergy (Rapid Oral). 3rd International Workshop on Microbial Life Under Extreme Energy Limitation, Denmark, 2015



  • Chasing Hannibal: Using geochemical techniques to aid in tracing the route taken by the Punic Army to invade Italia in 218 BC. 25th Annual Meeting of the British Organic Geochemical Society, University of Liverpool (Jordan SF, Oral)
  • Abundance and diversity of sedimentary bacteria across hydrographic zones in the Irish Sea. 25th Annual Meeting of the British Organic Geochemical Society, University of Liverpool, UK (Poster)
  • Hydrographic controls on marine organic matter fate and microbial diversity in the western Irish Sea. European Geoscience Union General Assembly, Vienna (Oral)

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