Head, J. J., K. de Queiroz, and H. W. Greene. In Review. Serpentes, Pan-Serpentes. In: K. de Queiroz, P. D. Cantino and J. A. Gauthier (eds.), Phylonyms: A Companion to the PhyloCode. Berkeley: University of California Press.

Sanders, K. L., Mumpuni, A. Hamidy, J. J. Head, and D. J. Gower. 2010. Phylogeny and divergence times of filesnakes (Acrochordus): Inferences from morphology, fossils and three molecular loci. Molecular Phylogenetics and Evolution, 56:857-867.

Wilson, J. A., D. Mohabey, S. Peters, and J. J. Head. 2010. Predation upon hatchling sauropod dinosaurs by a new basal snake from the Late Cretaceous of India. PLOS Biology. 8:1–5 (doi:10.1371/journal.pbio.1000322.g005)

Müller, J., T. Scheyer, J.J. Head, P.M. Barrett, P. Ericson, D. Pol, and M. R. Sanchéz-Villagra. 2010. The evolution of vertebral numbers in recent and fossil amniotes: The roles of homeotic effects and somitogenesis. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 107:2118-2123.

Head, J. J., J. I. Bloch, A. K. Hastings, J. R. Bourque, E. A. Cadena, F. A. Herrera, P. D. Polly, and C. A. Jaramillo. 2009. Communications Arising: Recalibrating the snake palaeothermometer, Reply. Nature, 460:E4-E5 doi:10.1038/nature08225

Head, J. J., P. M. Barrett, and E. J. Rayfield. 2009. Neurocranial osteology and systematic relationships of Varanus (Megalania) prisca Owen (Squamata, Varanidae). Zoological Journal of the Linnaean Society of London, 155:445-457.

Head, J. J., J. I. Bloch, A. K. Hastings, J. R. Bourque, E. A. Cadena, F. A. Herrera, P. D. Polly, and C. A. Jaramillo. 2009. Giant boid snake from the Paleocene neotropics reveals hotter past equatorial temperatures. Nature, 457:715-717.

Reisz, R. R., and J. J. Head. 2008. Turtle origins out to sea. Nature, 456:450-451.

Bajpai, S, and J. J. Head. 2008. An early Eocene palaeopheid snake from Vastan Lignite Mine, Gujarat, India. Gondwana Geological Magazine, 22:85-90.

Head, J. J., and C. J. Bell. 2008. Snakes from Lemudong'o, Kenya Rift Valley. In: L. Hlusko (ed.), Stratigraphy, Paleontology, and Paleoecology of the Lemudong'o Site, Kenya. Kirtlandia, 56:177-179.

Ambrose, S. H., C. J. Bell, R. L. Bernor, J.-R. Boisserie, C. M. Darwent, D. Degusta, A. Deino, N. Garcia, Y. Haile-Selassie, J. J. Head, L. J. Hlusko, F. C. Howell, M. D. Kyule, F. K. Manthi, E. M. Mathu, C. M. Nyamai, M. Pickford, H. Saegusa, T. A. Stidham, and M. A. J. Williams. 2008. The Paleoecology and Paleogeographic Context of Lemudong’o Locality 1, a Late Miocene Terrestrial Fossil Site in Southern Kenya. Kirtlandia, 56:38-52.

Head, J. J. 2007. Snake Evolution. McGraw-Hill Yearbook of Science and Technology.

Head, J. J., D. Mohabey, and J. A. Wilson. 2007. Acrochordus Hornstedt (Serpentes: Caenophidia) from the Miocene of Kachchh, western India: Neogene radiation of a derived snake. Journal of Vertebrate Paleontology, 27(3):720-723.

Head, J. J., and P. D. Polly. 2007. Dissociation of somatic maturity from segmentation drives gigantism in snakes. Biology Letters, 3(3):296-298. doi:10.1098/rsbl.2007.0069.

Head, J. J., O. Aguilera, and M. R. Sánchez-Villagra. 2006. Past colonization of South America by trionychid turtles: Fossil evidence from the Neogene of Margarita Island, Venezuela. Journal of Herpetology, 40(3):380-383.

Head, J. J., M. R. Sánchez-Villagra, and O. Aguilera. 2006. Fossil snakes from the Neogene of Venezuela (Falcón State). In: M. R. Sánchez-Villagra and A. B. Smith (eds.), Fossil Vertebrates from the Neogene of Venezuela: Contributions in Neotropical Palaeontology. Journal of Systematic Palaeontology, 4(3):233-240.

Rieppel, O., and J. J. Head. 2005. New specimens of the fossil snake genus Eupodophis Rage and Escuillié, from the mid-Cretaceous of Lebanon. Memorie della Società Italiana di Scienze Naturali e Museo Civico di Storia Naturale di Milano, 23(2):1-26.

Head, J. J. 2005. Snakes of the Siwalik Group (Miocene of Pakistan): Systematics and relationship to environmental change. Palaeontologia Electronica, 8.1,16A:1-32.

Head, J. J., P. A. Holroyd, J. H. Hutchison, and R. L. Ciochon. 2005. First report of snakes (Serpentes) from the late middle Eocene Pondaung Formation, Myanmar. Journal of Vertebrate Paleontology, 25:246-250.

O’Leary, M. A., E. M. Roberts, J. J. Head, F. Sissoko, and M. L. Bouaré. 2004. Titanosaurian (Dinosauria: Sauropoda) remains from the “Continental Intercalaire” of Mali. Journal of Vertebrate Paleontology, 24:923-930.

Polly, P. D., and J. J. Head. 2004. Maximum-likelihood identification of fossils: taxonomic identification of Quaternary marmots (Rodentia, Mammalia) and identification of vertebral position in the pipe snake Cylindrophis (Serpentes, Reptilia). Pps. 197-222, In: A. M. T. Elewa (ed.), Morphometrics- Applications in Biology and Paleontology. Springer-Verlag, Berlin, Heidelberg, New York.

Bell, C. J., J. J. Head, and J. I. Mead. 2004. Synopsis of the herpetofauna from Porcupine Cave. Pps. 117-126, In,: A. D. Barnosky (ed.), Biodiversity Response to Climate Change in the Middle Pleistocene. The Porcupine Cave Fauna from Colorado. Berkeley: University of California Press.

Gunnell, G. F., B. F. Jacobs, P. S. Herendeen, J. J. Head, E. Kowalski, C. P. Msuya, F. A. Mizambwa, T. Harrison, J. Habersetzer, and G. Storch. 2003. Oldest placental mammal from sub-Saharan Africa: Eocene microbat from Tanzania – evidence for early evolution of sophisticated echolocation. Palaeontologia Electronica, 5(3):1-10.

Head, J. J. 2001. A reassessment of the phylogenetic position of Eolambia caroljonesa (Dinosauria: Iguanodontia). Journal of Vertebrate Paleontology, 21(2):392-396.

Head, J. J., and Y. Kobayashi. 2001. Biogeographic histories and chronologies of derived iguanodontians. Publications Especiales de la Asociación Paleontológica Argentina, 7:107-111.

Polly, P. D., J. J. Head, and M. J. Cohn. 2001. Testing modularity and dissociation: the evolution of regional proportions in snakes (Serpentes, Vertebrata). Pps. 305-335, In: M. Zelditch (ed.), Beyond Heterochrony: The Evolution of Development. John Wiley & Sons.

Head, J. J., S. M. Raza, and P. D. Gingerich. 1999. Drazindaretes tethyensis, a new large trionychid (Reptilia: Testudines) from the marine Eocene Drazinda Formation of the Suliman Range, Punjab (Pakistan). Contributions from the Museum of Paleontology, The University of Michigan, 30(7):199-214.

Head, J. J. 1998. A new species of basal hadrosaurid (Dinosauria, Ornithischia) from the Cenomanian of Texas. Journal of Vertebrate Paleontology, 18(4):718-738.

Head, J. J. 1997. Reptile Paleontology of the Dhok Pathan Formation, Siwalik Group: Preliminary results. Pps. 49-56, In: M.I. Ghaznavi, S.M. Raza, and M.T. Hasan (eds.) Siwaliks of South Asia. Proceedings of the Third GEOSAS Workshop. Geological Survey of Pakistan, Islamabad.


Dept of Biology  |  University of Toronto  |  3359 Mississauga Road N  |   Mississauga, ON L5L1C6 CANADA  |  jason.head@utoronto.ca