Professor Mark Williams

Mark WilliamsProfessor of Palaeobiology


Tel: +44 (0)116 252 3642 
Email: mri@le.ac.uk

 

 

Personal details

Teaching

I teach courses on the ‘Geological Application of Microfossils’ – with components of oceanography, evolution and biogeography, and forensic and environmental investigation, and ‘Methods and modelling in palaeoclimatology’ – with much about stable isotope geochemistry, climate proxies and the application of numerical climate models.

Publications

Books

  • ‘The Goldilocks planet’ (2012) – The 4 billion year story of climate change on Earth. Oxford University Press (Jan Zalasiewicz & Mark Williams).
  • 'Oceans on Earth and other planets' (in preparation for Oxford University Press)

Edited volumes

  • Williams, M., Zalaziewicz, J., Haywood, A. & Ellis, M. (eds). 2011. The Anthropocene: a new epoch of geological time. Thematic set of 13 papers in the Philosophical Transactions of the Royal Society, London, Series A, 369.
  • Salzmann, U., Williams, M., Johnson, A.L.A., Kender, S. & Zalasiewicz, J. (eds) 2011. Pliocene climate and seasonality. Thematic set of 10 papers in Palaeogeography, Palaeoclimatology, Palaeoecology, 309.
  • Rushton, A., Bruck, P., Molyneux, S., Williams, M. & Woodcock, N. 2011. A revised correlation of the Cambrian rocks in Britain and Ireland. Special Report of the Geological Society, London, 25, 62 pp.
  • Williams, M., A, Haywood, J. Gregory & D. Schmidt. 2007. Deep time perspectives on climate change. The Micropalaeontological Society, Special Publications. The Geological Society, London. 589 pp.

Reseach papers 2008 - present

  • Shen, C., Aldridge, R.A., Williams, M., Vandenbroucke, T.R.A., Zhang, X-G. (submitted). The earliest chitinozoans discovered in the Cambrian Duyun fauna of China. Geology.
  • Tanaka, G., Siveter, D.J. & Williams, M. (submitted) A new bivalved arthropod from the Devonian of Japan. Palaeontological Research.
  • Landing, E., Mohiibullah, M. & Williams, M. (submitted). First early Middle Ordovician ostracods from western Avalonia. Journal of Paleontology.
  • Tasker, A., Wilkinson, I.P., Williams, M., Morris, M., Cooper, N & Fulford, N.G. (submitted). Provenance of Chalk tesserae from Roman mosaics in Leicester. Britannia.
  • Dowsett, H., Robinson, M.M., Riesselman, C.R., Stoll, D.K., Johnson, A.L.A. & Williams, M. (submitted). The PRISM reconstruction: time for a paradigm shift. Philosophical Transactions of the Royal Society, Series A.
  • Zalasiewicz, J., Page, A.A., Rickards, R.B., Williams, M., Wilby, P., Howe, M. & Snelling, A. in press. Polymorphic organisation in a planktonic graptoloid (Hemichordata: Pterobranchia) colony of Late Ordovician age. Geological Magazine.
  • Mohibullah, M., Williams, M., Vandenbroucke, T., Sabbe, K. & Zalasiewicz, J. in press. Marine ostracod provinciality in the Ordovician of palaeocontinental Laurentia and its environmental and geographical expression. PloS ONE.
  • Vandenbroucke, T.R.A., Armstrong, H.A., Williams, M., Paris, F., Sabbe, K. & Zalasiewicz, J.A. in press. Late Ordovician plankton maps and the climate of the Early Palaeozoic Icehouse. In Servais, T. & Harper, D.A.T. (eds) Ordovician palaeobiogeography. Geological Society Memoir. Geological Society Publishing House, Bath.
  • Meidla, T., Tinn, O., Salas, M.J., Williams, M., Siveter, D.J., Vandenbroucke, T. & Sabbe, K. In press. Biogeographical patterns of Ordovician ostracods. In Servais, T. & Harper, D.A.T. (eds) Ordovician palaeobiogeography. Geological Society Memoir. Geological Society Publishing House, Bath.
  • Davies, J.R., Waters, R., Molyneux, S.G., Williams, M., Zalasiewicz, J.A., Vandenbroucke, T. & Verniers, J. in press. A revised sedimentary and biostratigraphical architecture for the Llandovery area, central Wales. Geological Magazine.
  • Bennett, C., Siveter, D.J., Davies, S., Williams, M., Wilkinson, I.P., Browne, M. & Miller, C.G. 2012. Ostracods from freshwater and brackish environments of the Mississippian of the Midland Valley of Scotland: the early colonisation of terrestrial water bodies. Geological Magazine, 149, 366-396.
  • Williams, M., Vannier, J., Corbari, L. & Massabuau, J-C. 2011. Oxygen as a driver of early arthropod microbenthos evolution. PloS ONE 6(12), e28183. doi:10.1371/journal.pone.0028183
  • Williams, M. 2011. Cambrian chronology. In Rushton, A., Bruck, P., Molyneux, S., Williams, M. & Woodcock, N. A revised correlation of the Cambrian rocks in Britain and Ireland. Special Report of the Geological Society, London, 25, 13-14.
  • Williams, M. 2011. Cambrian isotope stratigraphy. In Rushton, A., Bruck, P., Molyneux, S., Williams, M. & Woodcock, N. A revised correlation of the Cambrian rocks in Britain and Ireland. Special Report of the Geological Society, London, 25, 15.
  • Steffen, W., Å. Persson, L. Deutsch, M. Williams, J. Zalasiewicz, C. Folke, J. Rockström, C. Crumley, et al. 2011. The Anthropocene: From global change to planetary stewardship. Ambio. doi: 10.1007/s13280-011-0185-x
  • Zalasiewicz, J., Kryza, R. & Williams, M. 2011. Mineral evolution on Earth: from the Hadean to the Anthropocene. Mineralogia Special Papers, 38, 33-36.
  • Salzmann, U., Williams, M., Haywood, A., Kender, S., Johnson, A. & Zalasiewicz, J. 2011. The climate and environment of a Pliocene warm world. Palaeogeography, Palaeoclimatology, Palaeoecology,309, 1-8.
  • Afzal, J., Williams, M., Leng, M. & Aldridge, R. 2011. Dynamic response of the shallow marine benthic ecosystem to regional and pan-Tethyan environmental change at the Paleocene – Eocene boundary. Palaeogeography, Palaeoclimatology, Palaeoecology.
  • Zalasiewicz, J., Russell, C., Snelling, A. & Williams, M. 2011. The systematic relationship of the monograptid species acinaces Törnquist, 1899 and rheidolensis Jones, 1909. Proceedings of the Yorkshire Geological Society, 58, 351-356.
  • Harvey, T., Williams, M., Condon, D., Wilby, P., Siveter, D., Rushton, A., Leng, M. & Gabbott, S. 2011. A refined chronology for the Cambrian succession of southern Britain. Journal of the Geological Society, London, 168, 705-716.
  • Ghobadi Pour, M., Mohibullah, M., Williams, M., Popov, L. & Tolmacheva, T. 2011. New, early ostracods from the Ordovician (Tremadocian) of Iran: systematic, biogeographical and palaeoecological significance. Alcheringa.
  • Hairapetian, V., Mohibullah, M., Tilley, L., Williams, M., Miller, C., Afzal, J., Ghobadi Pour, M. & Hejazi, H. 2011. Early Silurian carbonate platform ostracods from Iran: a peri-Gondwanan fauna with strong Laurentian affinities. Gondwana Research, 20, 645-653.
  • Tasker, A., Wilkinson, I.P., Fulford, M. & Williams, M. 2011. Provenance of chalk tesserae from Brading Roman Villa, Isle of Wight, UK. Proceedings of the Geologists Association, 122, 933-937.
  • Rushton, A.W.A., Bruck, P. & Williams, M. 2011. Monian Supergroup. In Rushton, A., Bruck, P., Molyneux, S., Williams, M. & Woodcock, N. A revised correlation of the Cambrian rocks in Britain and Ireland. Special Report of the Geological Society, London, 25, 35-36.
  • Woods, M., Wilby, P., Leng, M., Rushton, A. & Williams, M. 2011. The Furongian (late Cambrian) Steptoean carbon isotope excursion (SPICE) in Avalonia. Journal of the Geological Society, London, 168, 851-862.
  • Bennett, C., Williams, M., Leng, M., Siveter, D.J., Davies, S. & Wilkinson, I.P. 2011. Diagenesis of fossil ostracods: implications for stable isotope based palaeoenvironmental reconstruction. Palaeogeography, Palaeoclimatology, Palaeoecology, 305, 150-161.
  • Zalasiewicz, J. & Williams, M. 2011. The Anthropocene and the Law of the Sea. In Vidas, D. (ed), The world ocean and globalisation.
  • Zalasiewicz, J., Williams, M., Haywood, A. & Ellis, M. 2011. Introduction. The Anthropocene: a new epoch of geological time? Philosophical Transactions of the Royal Society, London, Series A, 369, 835-841.
  • Haywood, A., Ridgewell, A., Lunt, D., Hill, D., Pound, M., Dowsett, H., Dolan, A., Francis, J. & Williams, M. 2011. Are there pre-Quaternary geological analogues for a future greenhouse warming? Philosophical Transactions of the Royal Society, London, Series A, 369, 933-956.
  • Zalasiewicz, J., Williams, M., Fortey, R.A. et al. 2011. The Stratigraphy of the Anthropocene. Philosophical Transactions of the Royal Society, London, Series A, 369, 1036-1055.
  • Hou, Xianguang, Aldridge, R., Siveter, D.J., Siveter, D.J., Williams, M., Zalasiewcz, J. & Ma, Xiaoya. 2011. An early Cambrian hemichordate zooid. Current Biology, 21, 1-5.
  • Mohibullah, M., Vandenbroucke, T., Williams, M., Meidla, T., Zalasiewicz, J. & Siveter, D.J. 2011. Late Ordovician (Sandbian) ostracods from the Ardwell Farm Formation, southwest Scotland. Scottish Journal of Geology, 47, 57-66.
  • Xianguang, H., Williams, M., Siveter, D.J., Siveter, D.J., Aldridge, R.A. & Sansom, R. 2010. Soft-part anatomy of the Early Cambrian bivalved arthropods Kunyangella and Kunmingella: significance for the phylogenetic relationships of Bradoriida. Proceedings of the Royal Society, Series B, doi: 10.1098/rspb.2009.2194.
  • Vandenbroucke, T.R.A, Armstrong, H.A, Williams, M, et al. 2010. Polar front shift and atmospheric CO2 during the glacial maximum of the Early Paleozoic Icehouse. Proceedings of the National Academy of Sciences, doi/10.1073/pnas.1003220107
  • Zalasiewicz, J., Williams, M., Crutzen, P. & Steffen, W. 2010. The new world of the Anthropocene. Environmental Science & Technology, 2010; 100225131929071 DOI: 10.1021/es903118j
  • Knowles, T., Leng, M.J., Williams, M., Taylor, P.D., Sloane, H.J. & Okamura, B. 2010. Interpreting seawater temperature range using oxygen isotopes and zooid size variation in Pentapora foliacea (Bryozoa). Marine Biology, 157, 1171-1180.
  • Williams, M. & Zalasiewicz, J. 2010. Enter the Anthropocene: an epoch of geological time characterised by humans. Open University Geological Society Journal, 30, 31-34.
  • Williams, M., Nelson, A.E.., Smellie, J.L., Leng, M.J., Johnson, A.L.A., Jarram, D.R., Haywood, A.M., Peck, V.L.., Zalasiewicz, J.A., Bennett, C. & Schöne, B.R., 2010. Sea ice extent and seasonality for the Early Pliocene northern Weddell Sea determined from fossil Austrochlamys bivalves. Palaeogeography, Palaeoclimatology, Palaeoecology, 292: 306-318.
  • Clark, N., Williams, M., Okamura, B., Smellie, J., Nelson, A., Knowles, T., Taylor, P., Leng, M., Zalasiewicz, J.A. & Haywood, A. 2010. Early Pliocene Weddell Sea seasonality determined from bryozoans. Stratigraphy, 7, 199-206.
  • Dowsett, H., Robinson, M., Haywood, A., Salzmann, U., Hill, D., Sohl, L., Chandler, M., Williams, M., Foley, K. & Stoll, D. 2010. The PRISM3D paleoenvironmental reconstruction. Stratigraphy 7, 123-139.
    Wilkinson, I.P., Wilby, P.R., Williams, M., Siveter, D.J., Page, A.A., Leggitt, L. & Riley, D.A. 2010. Exceptionally preserved ostracodes from a Middle Miocene palaeolake, California, USA. Journal of the Geological Society, 167, 817-825.
  • Afzal, J., Williams, M., Leng, M.J., Aldridge, R.A. & Stephenson, M.H. 2010. Evolution of Paleocene to Early Eocene larger benthic foraminifer assemblages of the Indus Basin, Pakistan. Lethaia, DOI: 10.1111/j.1502-3931.2010.00247.x
  • Wilkinson, I.P., Tasker, A., Gouldwell, A., Williams, M., Edgworth, M., Zalasiewicz, J. & Christie, N. 2010. Micropalaeontology reveals the source of building materials for a defensive earthwork (English Civil War?) at Wallingford Castle, Oxfordshire. Journal of Micropalaeontology, 29, 87-92.
  • Vandenbroucke, T.R.A., Armstrong, H., Williams, M., Paris, F., Zalasiewicz, J.A., Novak, J. & Verniers, J. 2010. Epipelagic chitinozoan biotopes map a steep latitudinal temperature gradient for the earliest Late Ordovician seas: implications for a cooling Late Ordovician climate. Palaeogeography, Palaeoclimatology, Palaeoecology, doi:10.1016/j.palaeo.2009.11.026.
  • Miller, C., Williams, M. & Siveter, D. 2010. Palaeocope ostracods from the Silurian Wenlock Series of Arctic Canada. Canadian Journal of Earth Sciences, 47, 913-925.
  • Zalasiewicz, J., Williams, M., Crutzen, P. & Steffen, W. 2010. The Anthropocene forces us to reconsider adaptationist models of human-environment interactions: A response. Environmental Science & Technology, 2010, 44, 6008.
  • Mohibullah, M., Afzal, J., Williams, M., Meidla, T., Siveter, D.J. & Zalasiewicz, J.A. 2010. Ostracods from the Upper Ordovician (Katian) carbonate lithofacies in southwest Scotland. Geological Magazine, 147, 919-939.
  • Smith, D.M., Zalasiewicz, J.A., Williams, M., Wilkinson, I.P., Redding, M. & Begg, C. 2010. Holocene drainage systems of the English Fenland: roddons and their environmental significance. Proceedings of the Geologists Association, 121, 256-269.
  • Stein, M, Peel, J., Siveter, D. & Williams, M. 2010. Isoxys (Arthropoda) with preserved soft anatomy from the Sirius Passet Lagerstaette, lower Cambrian of North Greenland. Lethaia, doi10.1111/j.1502-3931.2009.00189.x
  • Page, A., Wilby, P., Williams, M., Vannier, J., Davies, J., Waters, R. & Zalasiewicz, J. 2010. Soft-part preservation in a bivalved arthropod from the Late Ordovician of Wales. Geological Magazine, 147, 242-252.
  • Vandenbroucke, T.R.A., Armstrong, H.A., Williams, M., Zalasiewicz, J.A. & Sabbe, K. 2009. Ground truthing Late Ordovician climate models using the paleobiogeography of graptolites. Ground‐truthing Late Ordovician climate models using the paleobiogeography of graptolites. Paleoceanography, 24, 4, doi:10.1029/2008PA001720, 2009
  • Williams, M., Haywood, A.M., Harper, E.M., Johnson, A., Knowles, T., Leng, M.J., Lunt, D., Okamura, B., Taylor, P. & Zalasiewicz, J.A. 2009. Pliocene climate and seasonality in North Atlantic shelf seas. Philosophical Transactions of the Royal Society, London, Series A, doi:10.1098/rsta.2008.0224.
  • Knowles, T, Taylor, P.D., Williams, M., Haywood, A.M., Okamura, B. 2009. Pliocene seasonality across the North Atlantic inferred from cheilostome bryozoans. Palaeogeography, Palaeoclimatology, Palaeoecology, 277, 226-235
  • Zalasiewicz, J.A. & Williams, M. 2009. A geological history of climate change. In Letcher, T.M. (Ed). Climate Change. Elsevier B.V., Oxford.
  • Davies, J.R., Waters, R.A., Williams, M., Wilson, D., Schofield, D.I. & Zalasiewicz, J.A. 2009. Sedimentary and faunal events revealed by a revised correlation of post-glacial Hirnantian (Late Ordovician) sequences in the Welsh Basin, UK. Geological Journal, 44, 332-340.
  • Afzal, J., Williams, M., Aldridge, R.A. 2009. Revised stratigraphy of the lower Cenozoic succession of the Greater Indus Basin in Pakistan. Journal of Micropalaeontology, 28, 7-23.
  • A. Page, P. Wilby, C. Mellish, M. Williams & J. Zalasiewicz. 2009. Dawsonia Nicholson 1873: a brachiopod, crustacean and problematicum rather than graptoloid ovarian vesicles. Earth and Environmental sciences Transactions, 99, 251-266.
  • A.W.A. Rushton, D.J. Siveter & M. Williams. 2009. The Cambrian. In Whittaker, J. & Hart, M.B. (eds), A Stratigraphical Index of British Ostracoda. The Micropalaeontological Society.
  • Zalasiewicz, J.A., Taylor, L., Rushton, A.W.A., Loydell, D.K., Rickards, R.B. & Williams, M. 2009. Graptolites in British stratigraphy. Geological Magazine, 146, 785-850.
  • Schofield, D.I., Davies, J.R., Waters, R.A., Williams, M. & Wilson, D. 2009. A new Early Silurian turbidite system in Central Wales: insights into eustatic and tectonic controls on deposition in the southern Welsh Basin. Geological Magazine, 146, 121-132.
  • Johnson, A., Hickson, J., Bird, A., Schoene, B., Balson, P., Heaton, T. & Williams, M. 2009. Comparative sclerochronology of modern and mid-Pliocene (c. 3.5 Ma) Aequipecten opercularis (Mollusca, Bivalvia): an insight into past and future climate change in the north-east Atlantic region. Palaeogeography, Palaeoclimatology, Palaeoecology, 284, 164-179.
  • Williams, M. & Siveter, D.J. 2008. A new leperditcope arthropod from the Ordovician of Spitsbergen. Journal of Micropalaeontology, 27, 1-6.
  • Williams, M., Siveter, Salas, M., D.J., Vannier, J.M.C., Popov, L.E. & Ghobadi Pour, M. 2008. The earliest ostracods: the geological evidence. Senckenbergiana Lethaea, 88, 11-21.
  • Williams, M., Siveter, D.J., Ashworth, A., Wilby, P., Horne, D.J., Lewis, A.R. & Marchant, D. 2008. Exceptionally preserved lacustrine ostracods from the Middle Miocene of Antarctica: implications for high latitude palaeoenvironment at 77° south. Proceedings of the Royal Society, Series B, Biological Sciences, doi:10.1098/rspb.2008.0396.
  • Lewis, A.R., Marchant, D.R., Ashworth, A.C., Hedenäs, L., Hemming, S.R., Johnson, J.V., Leng, M.J., Machlus, M.L., Newton, A.E., Raine, J.I., Willenbring, J.K., Williams, M. & Wolfe, A.P. 2008. Major mid-Miocene cooling and extinction of tundra in continental Antarctica. Proceedings of the National Academy of Sciences, 105, 10676-10680.
  • Nelson, A., Smellie, J., Williams, M. & Zalasiewicz, J.A. 2008. Late Miocene marine trace fossils from James Ross Island. Antarctic Science, doi: 10.1017/S0954102008001429, 2 pp.
  • Nelson, A., Smellie, J., Williams, M. & Moreton, S. 2008. Mummified crabeater seals on James Ross Island, Antarctic Peninsula – a discussion of age, geographical distribution, taphonomy and the question of their unusual occurrence. Antarctic Science, doi: 10.1017/S095410200800143X, 9 pp.
  • Wilkinson, I.P., Williams, M., Young, J.R., Lott, G.K., Cook, S.R. & Fulford, M.G. 2008. The application of microfossils in assessing the provenance of chalk used in the manufacture of Roman mosaics at Silchester. Journal of Archaeological Science, 35, 2415-2422.
  • Blackett, E., Page, A., Zalasiewicz, J., Williams, M. Rickards, R. & Davies, J. 2008. A refined biostratigraphy for the late Ordovician and early Silurian of central Wales.  Lethaia, DOI: 10.1111/j.1502-3931.2008.00108.x
  • Zalasiewicz, J.A., Williams, M. & 19 others. 2008. Are we now living in the Anthropocene? GSA Today, 18. 4-8.
  • Vandenbroucke, T., Williams, M., Davies, J.R., Waters, R.A. & Zalasiewicz, J.A. 2008 (for 2007). Integrated Upper Ordovician graptolite–chitinozoan biostratigraphy of the Cardigan and Whitland areas southwest Wales. Geological Magazine. doi: 10.1017/S0016756807004232.
  • Zalasiewicz, J., Kerr, A., Bazley, T, Smith, A., Williams, M., Barry, T.L., Bown, P.R., Brenchley, P., Cantrill, D., Coe, A.L., Gale, A., Gibbard, P., F. Gregory, Hounslow, M.J., Knox, R., Marshall, J., Oates, M. Powell, J., Rawson, P., Stone, P. & Waters, C. 2008 The Anthropocene Epoch: today's context for governance and public policy. Science in Parliament 65(2), 40.

Research papers pre - 2008

  • Schweigert, G., Martill, D.M. & Williams, M. 2007. Crustacea of the Crato Formation. In D.M. Martill & R. Loveridge, Fossils of the Crato Formation. Cambridge University Press.
  • Zalasiewicz, J.A., et al., including Williams, M. 2007. The scale-dependence of strata-time relations: implications for stratigraphic classification. Stratigraphy, 4, 58-68.
  • Williams, M., Siveter, D.J., Popov, L.E. & Vannier, J.M.C. 2007. Biogeography and affinities of the bradoriid arthropods: cosmopolitan microbenthos of the Cambrian seas. Palaeogeography, Palaeoclimatology, Palaeoecology, 248, 202-232.
  • A. Haywood, P. Valdes, D. Hill & M. Williams. 2007. The mid Pliocene warm period: A test bed for integrating data and models. In: Williams, M., Haywood, A., Gregory, J. & Schmidt, D. (eds) Deep time perspectives on climate change. Marrying the signal from computer models and biological proxies. The Micropalaeontological Society, Special Publications. The Geological Society, London. 443-457.
  • M. Williams, A, Haywood, J. Gregory & D. Schmidt. 2007. Deep time perspectives on climate change: an introduction. In: Williams, M., Haywood, A., Gregory, J. & Schmidt, D. (eds) Deep time perspectives on climate change. Marrying the signal from computer models and biological proxies. The Micropalaeontological Society, Special Publications. The Geological Society, London. 1-3.
  • Page, A.A., Zalasiewicz, J.A., Williams, M. & Popov, L.E. 2007. Were transgressive black shales a negative feedback modulating glacioeustacy during the Early Palaeozoic Icehouse? In: Williams, M., Haywood, A., Gregory, J. & Schmidt, D. Deep time perspectives on climate change: marrying the signal from computer models and biological proxies. The Micropalaeontological Society. Special Publications. The Geological Society London. 123-156.
  • Williams, M., Haywood, A., Vautravers, Sellwood, B., M., Hillenbrand, C.D., Wilkinson, I.P. & Miller, C.G. 2007. Relative effect of taphonomy on calcification temperature estimates from fossil planktonic foraminifera. Geobios, 40, 861-874
  • M.J. Salas, J. Vannier, & M. Williams. 2007. Early Ordovician ostracods from Argentina: their bearing on the origin of the binodicope and palaeocope clades. Journal of Paleontology, 81, 1384-1395.
    Ghobadi Pour, M., Williams, M. & Popov, L.E. 2007. A new middle Ordovician arthropod fauna (Trilobita, Ostracoda, Bradoriida) from the Lashkarak Formation, eastern Alborz Mountains, northern Iran. GFF, 129, 145-154.
  • J.A. Zalasiewicz, M. Williams, M.A. Miller, A. Page, E. Blackett. 2007. Llandovery graptolites from Saudi Arabia: first confirmed record of Telychian rocks from the Arabian peninsula. Geoarabia, 12, 15-36.
    Rushton, A. Williams, M. Siveter, D.J., Berg-Madsen, V. 2007. A new mid-Cambrian trilobite fauna from Shropshire. Proceedings of the Geologists Association, 118, 129-142.
  • Wilby, P.R., Page, A.A., Zalasiewicz, J.A., Milodowski, A.E., Williams, M. & Evans, J. 2007. Syntectonic monazite in low grade mudrocks: a potential geochronometer for cleavage formation? Journal of the Geological Society, 164, 53-56.
  • L. Cherns, L.R.M. Cocks, J.R. Davies, R.A. Waters & M. Williams. 2007. The Silurian. In Brenchley, P. (Ed.), The Geology of England and Wales. Special Publication of the Geological Society, London.
  • M. Williams & J.A. Zalasiewicz. 2007. Illustration of Wenlock graptolite type specimens. In Zalasiewicz, J.A. & Rushton, A.W.A. (eds). Atlas of Graptolite type specimens. Palaeontographical Society, London. Folio 2.
  • M. Williams, D. Schmidt, I. Wilkinson, C.G. Miller, P.D. Taylor, 2006. The type material of the Miocene to Recent species Globigerinoides sacculifer revisited. Journal of Micropalaeontology, 25, 153-156.
  • M. Ghobadipour, M. Williams, J. Vannier, T. Meidla & L. Popov. 2006. Ordovician ostracods from East central Iran. Acta Palaeontologica Polonica, 51, 551-560.
  • J.R. Davies, D.I. Schofield, T.M. Sheppard, R.A. Waters, M. Williams & D. Wilson. 2006. Geology of the Lampeter district. Sheet Explanation of the British Geological Survey 1:50000 Sheet 195 Lampeter (England & Wales). Keyworth, Nottingham: British Geological Survey.
  • Wilkinson, I.P., Wilby, P.R., Williams, M., Siveter, D.J., & Vannier, J. 2006. Ostracod carnivory through time, in Elewa, A.M.T., ed., Predation in Organisms: A Distinct Phenomenon:  Springer-Verlag.
  • M. Williams, M. Leng, M. Stephenson, I.P. Wilkinson, J.E. Andrews, D.J. Siveter, D.J. Horne, J. Vannier. 2006 (for 2005). Evidence for ostracods colonising coastal floodplain environments during the Early Carboniferous. Palaeogeography, Palaeoclimatology, Palaeoecology, 230, 299-318.
  • H.A. Armstrong, B.R. Turner, I. M. Makhlouf, G.P. Weedon, M. Williams, A. Al Smadi & A. Abu Salah. 2006 (for 2005). Reply to “Origin, sequence stratigraphy and depositional environment of an Upper Ordovician (Hirnantian) deglacial black shale, Jordan”. Palaeogeography, Palaeoclimatology, Palaeoecology, 230, 356-360.
  • M. Williams, J. Smellie, J. Johnson, D. Blake, 2006. Late Miocene Asterozoans from the James Ross Island Volcanic Group. Antarctic Science, 18, 117-122.
  • M. Williams, I.P. Wilkinson, D. Tappin, G. McMurtry, G. Fryer. 2006. Hawaiian megatsunami at 110 ka: role of microfossils in its detection. Journal of Micropalaeontology, 25, 55-56.
  • M. Williams, A.M. Haywood, C-D Hillenbrand & I.P. Wilkinson. 2005. Efficacy of δ18O data from Pliocene planktonic foraminifer calcite for spatial sea surface temperature reconstruction: a comparison with fossil assemblage data from the mid Pliocene and with a fully coupled ocean atmosphere General Circulation Model. Geological Magazine, 142, 399-417.
  • M. Williams, A.M. Haywood, S.P. Taylor, P.J. Valdes, B.W. Sellwood & C-D. Hillenbrand. 2005. Evaluating the efficacy of planktonic foraminifer calcite δ18O for sea surface temperature reconstruction for the Late Miocene. Geobios, 38, 843-863.
  • J. Vannier, M. Williams, J.J. Alvaro, D. Vizcaino & E. Monceret, E. 2005. New Early Cambrian bivalved arthropods from southern France. Geological Magazine, 142, 1-13.
  • W.J. Barclay, J.R. Davies, R.A. Waters, P. Wilby & M. Williams. 2005. Geology of the Brecon district. Sheet Explanation of the British Geological Survey 1:50000 Sheet Brecon (England & Wales). Keyworth, Nottingham: British Geological Survey.
  • H.A. Armstrong, B.R. Turner, I. M. Makhlouf, G.P. Weedon, M. Williams, A. Al Smadi & A. Abu Salah. 2005. Origin, sequence stratigraphy and depositional environment of an Upper Ordovician (Hirnantian) deglacial black shale, Jordan. Palaeogeography, Palaeoclimatology, Palaeoecology, 220, 273-289.
  • M. Williams, M. Stephenson, I.P. Wilkinson, M. Leng & C. Giles Miller. 2005. Early Carboniferous (Late Tournaisian-Early Visean) ostracods from the Ballagan Formation, central Scotland, UK. Journal of Micropalaeontology, 24, 77-94.
  • A.M. Haywood, A.C. Ravelo, P. Dekens & M. Williams. 2005. Warmer tropics during the mid-Pliocene? Evidence from alkenone paleothermometry and a fully coupled ocean-atmosphere GCM. Geochemistry, Geophysics, Geosystems, 6 (3), doi: 1029/2004GC000799, 20 pp.
  • M.H. Stephenson, M. Williams, A. Monaghan, S. Arkley, R.A. Smith, M. Dean, M.A.E. Browne & M. Leng. 2004. Palynomorph and ostracod biostratigraphy of the Ballagan Formation, Midland Valley of Scotland and elucidation of intra-Dinantian unconformities. Proceedings of the Yorkshire Geological Society, 55, 131-143.
  • M.H. Stephenson, M. Williams, M. Leng & A. Monaghan. 2004. Aquatic plant microfossils of probable non-vascular origin from non-marine environments of the Ballagan Formation (Lower Carboniferous), Midland Valley, Scotland. Proceedings of the Yorkshire Geological Society, 55, 145-158.
  • G.M. McMurtry, G.J. Fryer, D.R. Tappin, I.P. Wilkinson, M. Williams, J. Fietzke, D. Garbe-Schoenberg & P. Watts. 2004. Megatsunami Deposits on Kohala Volcano, Hawaii from Flank Collapse of Mauna Loa. Geology, 32, 741-744.
  • I.P. Wilkinson & M. Williams. 2004. Interstitial ostracods from a beach sand habitat, NW flank of Kohala Volcano, Hawaii. Revista Espanola de Micropalaeontologia, 36, 101-108.
  • I.P. Wilkinson, M. Williams, D.J. Siveter & P.R. Wilby. 2004. A Late Carboniferous necrophagous myodocopid ostracod from Derbyshire, England. Revista Espanola de Micropalaeontologia, 36, 187-198.
  • D.I. Schofield, J.R. Davies, R.A. Waters, M. Williams & D. Wilson. 2004. Geology of the Builth Wells district. Sheet Explanation of the British Geological Survey 1:50000 Sheet 196 Builth Wells (England & Wales). Keyworth, Nottingham: British Geological Survey. 38 pp.
  • M. Williams, A.W.A. Rushton, B. Wood, J.D. Floyd, R.A. Smith & C. Wheatley. 2004. A revised graptolite biostratigraphy for the lower Caradoc (Upper Ordovician) of southern Scotland. Scottish Journal of Geology, 40, 97-114.
  • M. Williams & J.A. Zalasiewicz. 2004. The Wenlock Cyrtograptus species of the Builth Wells district, central Wales. Palaeontology, 47, 223-263.
  • M. Williams, J.R. Davies, R.A. Waters, A.W.A. Rushton & P.R. Wilby. 2003. Stratigraphical and palaeoecological significance of Caradoc (Upper Ordovician) graptolites from Cardigan, southwest Wales. Geological Magazine, 140, 1-23.
  • J.D. Floyd & M. Williams. 2003. A revised lithostratigraphy for the Silurian of the Girvan district. Transactions of the Royal Society of Edinburgh: Earth Sciences, 93, 383-392.
  • M. Williams, J.D. Floyd, M. Salas, D.J. Siveter, P. Stone & J. Vannier. 2003. Patterns of ostracod migration for the ‘North Atlantic’ region during the Ordovician. Palaeogeography, Palaeoclimatology, Palaeoecology, 195, 193-228.
  • M. Williams, J.A. Zalasiewicz, A.W.A. Rushton, D.K. Loydell & R.P. Barnes. 2003. A new stratigraphically significant Torquigraptus species (Silurian graptolite) from the Southern Uplands Terrane, Scotland. Scottish Journal of Geology, 39, 17-28.
  • A. Chopey-Jones, M. Williams & J.A. Zalasiewicz. 2003. Biostratigraphy, palaeobiogeography and morphology of the Llandovery graptolites Campograptus lobiferus (M‘Coy) and Campograptus harpago (Törnquist). Scottish Journal of Geology, 39, 71-85.
  • J.A. Zalasiewicz, M. Williams & M. Akhurst. 2003. An unlikely evolutionary lineage: the Rhuddanian (Silurian, Llandovery) graptolites Huttagraptus? praematurus and Coronograptus cyphus re-examined. Scottish Journal of Geology, 39, 89-96.
  • J.R. Davies, R.A. Waters, P.R. Wilby, M. Williams & D. Wilson. 2003. Geology of the Cardigan and Dinas Island district. Sheet Explanation of the British Geological Survey. 1:50000 Sheet 193 (including part of Sheet 210). Cardigan and Dinas Island (England & Wales). Keyworth, Nottingham: British Geological Survey. 26 pp.
  • M. Stephenson, M. Williams, A. Monaghan, S. Arkley & R. Smith 2003 (for 2002). Biostratigraphy and palaeoenvironments of the Ballagan Formation (Lower Carboniferous) in Ayrshire, south-west Scotland. Scottish Journal of Geology, 38, 93-111.
  • J. Vannier, P. Racheboeuf, E. Brussa, M. Williams, A.W.A. Rushton, T. Servais & D.J. Siveter. 2003. New cosmopolitan arthropod zooplankters in the Ordovician seas. Palaeogeography, Palaeoclimatology, Palaeoecology, 195, 173-191.
  • D.J. Siveter, D. Waloszek & M. Williams. 2003. Klausmuelleria salopensis gen. et sp. nov., a phosphatocopid crustacean with preserved appendages from the lower Cambrian, England. Special Papers in Palaeontology.
  • Hou Xianguang, D.J. Siveter, M. Williams & Feng, Xian-Hong. 2002. A monograph of the bradoriid arthropods from the lower Cambrian of southwest China. Transactions of the Royal Society of Edinburgh: Earth Sciences, 92, 347-409.
  • D.J. Siveter, D. Waloszek, M. Williams & R. A. Fortey. 2001. Crustaceans and the "Cambrian Explosion". Science, 294, 2047.
  • D.J. Siveter, M. Williams & D. Waloszek. 2001. A phosphatocopid crustacean from the lower Cambrian of England. Science, 293, 479-481.
  • M. Williams, P. Stone, D.J. Siveter & P. Taylor. 2001. Upper Ordovician ostracods from the Cautley District, northern England: Baltic and Laurentian affinities. Geological Magazine, 138, 589-607.
  • M. Williams, J.D. Floyd, C.G. Miller & D.J. Siveter. 2001 (for 2000). Scottish Ordovician ostracodes: a review of their palaeoenvironmental, biostratigraphical and palaeobiogeographical significance. Transactions of the Royal Society of Edinburgh: Earth Sciences, 91, 499-508.
  • M. Williams & J.D. Floyd. 2000. Mid-Caradoc (Ordovician) ostracodes from the Craighead Limestone Formation, Craighead Inlier, Girvan district, SW Scotland. Scottish Journal of Geology, 36, 51-60.
  • M. Williams, J.D. Floyd, C.G. Miller, D.J. Siveter & P. Stone. 2000. Kinnekullea comma (Jones, 1879), a trans-Iapetus ostracod locum for the late Ordovician Dicellograptus anceps graptolite Biozone. Journal of Micropalaeontology, 19, 61-62.
  • M. Williams & J.A. Zalasiewicz. 2000. Illustration of Wenlock graptolite type specimens. In Howe, M.P.A., Hutt, J.A., Rushton, A.W.A. & Zalasiewicz, J.A. (eds). Atlas of Graptolite type specimens. Palaeontographical Society, London. Folio 1.
  • J.D. Floyd, M. Williams & A.W.A. Rushton. 1999. Late Ordovician (Ashgill) ostracodes from the Drummuck Group, Craighead Inlier, Girvan district, southwest Scotland. Scottish Journal of Geology, 35, 15-24.
  • J.A. Zalasiewicz & M. Williams. 1999. Graptolite biozonation of the Wenlock (Silurian) of the Builth Wells district, central Wales. Geological Magazine, 136, 263-283.
  • J.A. Zalasiewicz, M. Williams, J. Verniers & M. Jachowicz. 1998. A revision of the graptolite biozonation and calibration with the chitinozoa and acritarch biozonations for the Wenlock succession of the Builth Wells district, Wales, U.K. Temas Geologico-Mineros ITGE, 23, 141.
  • M. Williams & D.J. Siveter. 1998. British Cambrian and Tremadoc bradoriid and phosphatocopid arthropods. Monograph of the Palaeontographical Society, London (Publ. No. 607, part of vol. 152 for 1998), 49 pp., 6 pls.
  • D.J. Siveter & M. Williams. 1997. Cambrian Bradoriid and Phosphatocopid Arthropods of North America. Special Papers in Palaeontology, 57, 1-69, 9 pls.
  • L. Melnikova, D.J. Siveter & M. Williams. 1997. Cambrian Bradoriida and Phosphatocopida (Arthropoda) of the former Soviet Union. Journal of Micropalaeontology, 16, 179-191.
  • J.M.C. Vannier, M. Williams & D.J. Siveter. 1997. The Cambrian origin of the circulatory system of crustaceans. Lethaia, 30, 169-184.
  • A.W.A. Rushton & M. Williams. 1997 (for 1996). The tail-piece of the Crustacean Caryocaris wrightii from the Arenig rocks of England and Ireland. Irish Journal of Earth Sciences, 15, 107-111.
  • M. Williams & D.J. Siveter. 1996. Lithofacies-influenced ostracod associations in the middle Ordovician Bromide Formation, Oklahoma, USA. Journal of Micropalaeontology, 15, 69-81.
  • M. Williams, D.J. Siveter & J.S. Peel. 1996. Isoxys (Arthropoda) from the early Cambrian Sirius Passet Lagerstätte, North Greenland. Journal of Paleontology, 70, 947-954.
  • D.J. Siveter, M. Williams, J.S. Peel & D. J. Siveter. 1996. Bradoriida (Arthropoda) from the early Cambrian of North Greenland. Transactions of the Royal Society of Edinburgh, Earth Sciences, 86 (for 1995), 113-121.
  • Hou, Xianguang, D. J. Siveter, M. Williams, D. Walossek & J. Bergström. 1996. Preserved appendages in the arthropod Kunmingella from the early Cambrian of China: its bearing on the systematic position of the Bradoriida and the fossil record of the Ostracoda. Philosophical Transactions of the Royal Society, Series B, 351, 1131-1145.
  • R.F. Lundin, M. Williams & D.J. Siveter. 1995. Domatial dimorphism occurs in leperditellid and monotiopleurid ostracodes. Journal of Paleontology, 69, 886-896.
  • M. Williams & J. Vannier, 1995. Ordovician Aparchitidae and Schmidtellidae; the significance of 'featureless' ostracods. Journal of Micropalaeontology, 14, 7-26.
  • D.J. Siveter & M.Williams,  1995. An early Cambrian assignment for the Caerfai Group of South Wales. Journal of the Geological Society, London, 152, 221-224.
  • M. Williams, R.F. Lundin & D.J. Siveter, 1994. On Primitiella minima (Harris). A Stereo-Atlas of Ostracod Shells 21, 119-122. Papers in Honour of P.C. Sylvester-Bradley.
  • M. Williams, 1994. Ostracoda (Arthropoda) from the middle Ordovician Simpson Group, Oklahoma, USA. Oklahoma Geology Notes, 54, 168-169.
  • M. Williams, D.J. Siveter, A.W.A. Rushton & V. Berg-Madsen, 1994. The upper Cambrian bradoriid ostracod Cyclotron lapworthi is a hesslandonid. Transactions of the Royal Society of Edinburgh, Earth Sciences, 85, 123-130.
  • J. Derby, et al. (incl. M. Williams) 1991. Biostratigraphy of the Timbered Hills, Arbuckle and Simpson Groups, Cambrian and Ordovician, Oklahoma: a review of the correlation tools and techniques available to the explorationist, Oklahoma Geological Survey Circular, 92, 15-41.
  • M. Williams, 1990. The Southern Oklahoma Aulacogen basin: its implications for middle Ordovician ostracod biofacies. Oklahoma Geology Notes, 50, 135-136.

Popular articles for geology and education

  • Zalasiewicz, J. & Williams, M. 2011. The newest rock strata: using the concept of the Anthropocene in teaching Earth Science. Earth Science Teachers Association, 36, 40-45
  • Smellie, J., Nelson, A. & Williams, M. 2006. Fire and ice: unravelling the climatic and volcanic history of James Ross Island, Antarctic Peninsula. Geology Today.
  • A. Haywood & M. Williams. 2006. Forecasting the weather of the future from rocks. Rockwatch (Geologists Association).
  • A. Haywood & M. Williams. 2005. Warm worlds. Planet Earth, Autumn 2005, p. 31.
  • A. Haywood & M. Williams. 2005. The climate of the future: clues from 3 million years ago. Geology Today, 21, 138-143.
  • M. Williams & M. Leng. 2004. With a pinch of salt - Why ostracods took so long to leave the sea. Planet Earth, Summer 2004, p. 32.
  • M. Williams, J.R. Davies, R.A. Waters, D. Wilson, P.R. Wilby & D.I. Schofield. 2004. The Cardigan rock sequence revealed. Earthwise, 20, 12-13.
  • M. Williams. 2002. Lost worlds: how exceptional fossils reveal the past. Journal of the Earth Science Teachers Association, 27, 89-93.
  • D.J. Siveter & M. Williams. 2002. Cambrian arthropod soft-parts revealed. Earthwise, 18, 38-39.

Authored contributions to published British Geological Survey maps:

  • Fishguard, Ettrick, Moffat, Ayr, Llandovery, Lochmaben, Lampeter, Llangranog, Brecon, Builth Wells, Cardigan & Dinas Island

Research

Research group: Palaeobiology, Palaeoenvironments and Palaeoclimates

My research focuses on three themes:

  1. Understanding the rate and degree of current environmental change from a geological context. I am part of an international group of scientists developing the concept of the Anthropocene as an epoch of geological time characterised by humans. Where would the geological boundary of this epoch be placed – at the beginning of widespread use of agriculture, at the appearance of human pollutants in polar ice cores, or at the time of James Watt’s invention of his steam engine?
  2. Utilising Pliocene climate as a scenario for late 21st century climate and global warming on Earth. I am a member of the United States Geological Survey ‘PRISM paleoclimate group’. I develop global and regional datasets to test numerical simulations of Pliocene climate. I am particularly interested in interrogating records of seasonality from various fossil groups to test hypotheses of permanent (or quasi permanent) El Nino states in the Pacific during the Pliocene or understanding the climate of the Antarctic in the mid to late Neogene.
  3. Understanding interactions between the biosphere and the evolution of the Earth System is a mainstay of my research and informs all of my work from the Cambrian to Anthropocene. I am interested in: how climate change drives transitions from the marine benthos to the plankton; the evolution of increasing ecosystem complexity from the Cambrian to Ordovician; and how climate change drove major extinctions of the plankton in the late Ordovician and mid Silurian. I am one of a small number of scientists working on the exceptionally preserved Chengjiang biota of Early Cambrian age.

With Jan Zalasiewicz, I am the author of the popular book 'The Goldilocks Planet (Oxford University Press). My research has taken me from the tropics to the Antarctic and from the Cambrian to the recent.

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Contact Details

School of Geography, Geology and the Environment
University of Leicester
University Road
Leicester
LE1 7RH, UK

T: +44 (0)116 252 3933
E: geology@le.ac.uk

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