University of California, Riverside

Faculty Profile System

Nigel C. Hughes

Nigel C. Hughes


Department of Earth Sciences
Geology 1212
(951) 827-3098

Research Areas

  • Paleobiology

Field and specimen based approaches to questions of evolutionary mechanism in the early Phanerozoic. Trilobite paleobiology. Lower Paleozoic paleogeography and tectonics (particularly the early Paleozoic history of India and the peri-Gondwanan region).

Recent Projects:
Paleozoic paleogeography of the Himalayan region. Development of trilobite bodyplan.
Click here to go to Research Aims & Opportunities in Invertebrate Paleobiology.


Ph.D., University of Bristol


  • Esteve J., Hughes N.C. and Zamora S. 2011 The Purujosa assemblage and the evolution of trilobite enrolment. Geology 39:575-578.
  • McKenzie N.R., Hughes N.C., Myrow P.M., Choi D. and Park T.-Y. 2011. Trilobites and zircons link North China with the eastern Himalaya during the Cambrian. Geology 39:591-594.
  • Finnegan S., Bergmann K., Eiler J.M., Jones D.S., Fike D.A., Eisenman I., Hughes N.C., Tripathi A.K., and Fischer W.W. 2011. The duration and magnitude of Late Ordovician-Early Silurian glaciation. Science 331:903-906
  • Collette J.H., Hughes N.C. and Peng S.-C. 2011 The first report of a Himalayan bradoriid arthropod and the paleogeographic significance of the form. Journal of Paleontology 85:76-82
  • Hughes N.C., Myrow P.M., McKenzie N.R., Harper D.A.T., Bhargava O.N., Tangri S.K., Ghalley K.S., and Fanning C.M. 2011. Cambrian rocks and faunas of the Black Mountain region, Bhutan. Geological Magazine 148:351-379
  • Myrow P.M., Hughes N.C., Goodge J.W., Fanning C.M., Williams I.S., Peng S.-C., Bhargava O.N., Tangri S.K., Parcha S.K. and Pogue K.R. 2010 Extraordinary transport and mixing of sediment across Himalayan central Gondwanaland during the Cambrian-Ordovician. Geological Society of America Bulletin 122:1660-1670.
  • Zhu X.-J., Hughes N.C., and Peng S.-C. 2010 Ventral structure and phylogeny of the late Furongian (Cambrian) trilobite Guangxiaspis guangxiensis Zhou in Zhou et al. 1977 and the diphyletic origin of the median suture. Journal of Paleontology 84:492-503.
  • John D.L., Hughes N.C., Galaviz M.I., Gunderson G.O., and Meyer R. 2010 Unusually preserved Metaconularia manni (Roy, 1935) from the Silurian of Iowa and the systematics of the genus. Journal of Paleontology 84:1-31.
  • Peng S.-C., Hughes N.C., Heim N.A., Sell B.K., Zhu, X.-J., Myrow P.M. and Parcha S.K. 2009 Cambrian trilobites from the Parahio and Zanskar Valleys, Indian Himalaya. Paleontological Society Memoirs (supplement to Journal of Paleontology) 71:1-95.
  • Torsvik T.H., Paulsen T.S., Hughes N.C., Myrow, P.M. and Ganerød M. 2009 The Tethyan Himalaya: paleogeographic and tectonic constraints from Ordovician paleomagnetic data. Journal of the Geological Society of London 166:679-687.
  • Myrow P.M., Hughes N.C., Searle M.P., Peng S.-C. and Parcha S.K. 2009. Stratigraphic correlation of Cambro-Ordovician deposits along the Himalaya: implications for the age and nature of rocks in the Mt. Everest region. Geological Society of America Bulletin 120:323-332. 
  • Webster, M., Gaines, R.R., Hughes, N.C. 2008. Microstratigraphy, trilobite biostratinomy, and depositional environment of the "lower Cambrian" Ruin Wash Lagerstätte, Pioche Formation, Nevada. Palaeogeography, Palaeoclimatology, Palaeoecology. Vol. 264: p.100-122.
  • Peng, S.-C., Yang, X.-., Hughes, N.C. 2008. The oldest stalk-eyed trilobite, Parablackwelderia Kobayashi, 1942 (Damesellinae, Cambrian), and its occurrence in Shandong, China. Journal of Paleontology. Vol. 82: p.842-850.
  • Hughes N.C., Haug J.T. and Waloszek D. 2008 Basal euarthropod development: a fossil-based perspective. p. 279-296. in Minelli A. and Fusco G. eds. Evolutionary Pathways - Key Themes in Evolutionary Developmental Biology. Cambridge University Press. 426pp.
  • Zhu X.-J., Hughes N.C., and Peng S.-C. 2007 On a new species of Shergoldia Zhang & Jell 1987 (Trilobita), the family Tsinaniidae, and the Order Asaphida. Memoirs of the Australasian Association of Palaeontologists 34:243-253.
  • Paulsen, T.S., Demosthenous, C.M., Myrow, P.M., Hughes, N.C., and Parcha, S.K. 2007 Paleostrain stratigraphic analysis of calcite twins across the Cambrian-Ordovician unconformity in the Tethyan Himalaya, Spiti and Zanskar valley regions, India. Journal of Asian Earth Sciences 31:44-54
  • Hughes, N.C. 2007 Strength in numbers: high phenotypic variance in early Cambrian trilobites and its evolutionary implications. BioEssays 29:1081-1084.
  • Hunda, B.R and Hughes, N.C. 2007 Evaluating paedomorphic heterochrony in trilobites: the case of the diminutive trilobite Flexicalymene retrorsa minuens from the Cincinnatian Series (Upper Ordovician), Cincinnati region. Evolution and Development 9:483-496.
  • Hughes, N.C. 2007 The Evolution of Trilobite Body Patterning. Annual Reviews in Earth and Planetary Sciences 35:401-434.
  •  Hughes, N.C., Minelli, A., and Fusco, G. 2006 The Ontogeny of Trilobite Segmentation: A Comparative Approach. Paleobiology 34:602-627
  • Hunda, B.R. Hughes, N.C. and Flessa, K. 2006 Trilobite taphonomy and temporal resolution in the Mt. Orab Shale (Upper Ordovician, Ohio, U.S.A.). Palaios 21:26-45
  • Myrow, P.M., Snell, K.E., Hughes, N.C., Paulsen, T.S., Heim, N.A., and Parcha, S.K. 2006 Cambrian depositional history of the Zanskar Valley region of Indian Himalaya: Tectonic implications. Journal of Sedimentary Research 76:364-381.
  • Myrow, P.M., Thompson, K.R., Hughes, N.C., Paulsen, T.S., Sell, B.K., and Parcha, S.K. 2006 Stratigraphy and depositional history. of the northern Indian Himalaya, Spiti Valley, north-central India. Geological Society of America Bulletin 118:491-510.
  • Hughes, N.C. 2005 Trilobite construction: building a bridge across the micro- and macroevolutionary divide. p. 139-158. in Briggs, D.E.G. (ed.) Evolving Form and Function: Fossils and Development: Proceedings of a symposium honoring Adolph Seilacher for his contributions to paleontology, in celebration of his 80th birthday. Peabody Museum of Natural History, Yale University. New Haven. 288pp.
  • Jacobs, D.K., Hughes, N.C., Fitz-Gibbon, S.T, and Winchell, C.J. 2005 Terminal addition, the Cambrian Radiation and the Phanerozoic evolution of bilaterian form. Evolution and Development 7: 498-514.

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