Research Scientist, Palaeobiology
Jordan Mallon studies the evolution and ecology of dinosaurs.
- Evolutionary palaeoecology
- Functional morphology
- Postdoctoral Fellow, Canadian Museum of Nature, Ottawa, Ontario, 2013–2014
- Ph.D., University of Calgary, Calgary, Alberta, 2006–2012
- B.Sc., Carleton University, Ottawa, Ontario, 2001–2005.
Jordan Mallon's research focuses on dinosaur ecology, particularly on those factors that influenced dinosaur diversity leading up to the end-Cretaceous mass extinction. To this end, Jordan studies dinosaur feeding adaptations, community ecology and geographic distribution. By carefully examining feeding posture, skull and beak shape, jaw function and tooth wear, he has shown that diverse plant-eating dinosaurs living in Alberta 75 million years ago were able to coexist as a result of their varied dietary specializations.
Jordan is also interested in horned dinosaurs, which were among the most successful animals of their time. He investigates their lifestyles, growth, and evolution to determine what allowed them to thrive during the Late Cretaceous Period.
Jordan has helped to name a number of new fossil species, including Plioplatecarpus nichollsae (a mosasaur), Basilemys morrinensis (a turtle), and Spiclypeus shipporum (a horned dinosaur).
Main Research Projects
- Adjunct Research Professor, Carleton University
- Section Editor, Vertebrate Anatomy Morphology Palaeontology
- Communications Committee, Society of Vertebrate Paleontology.
- Marissa Livius (B.Sc., Carleton University)
- Bryan Moore (M.Sc., Carleton University)
- Mat Roloson (M.Sc., Carleton University)
- Taia Wyenberg-Henzler (M.Sc., Carleton University)
- Jonathan Bura (B.Sc., University of Ottawa)
- Brigid Christison (independent study, Carleton University)
- Tom Dudgeon (M.Sc., Carleton University)
- Zoe Landry (independent study, Carleton University)
- Robbie Stewart (B.Sc., Carleton University)
Open-access journal Vertebrate Anatomy Morphology Palaeontology
Society of Vertebrate Paleontology
Canadian Society of Vertebrate Palaeontology
Department of Earth Sciences, Carleton University
Mallon, J.C., J.O. Farlow and F. Therrien. (In review). Dinosaur paleoecology. In D.B. Weishampel, P.M. Barrett, M.T. Carrano, and P.J. Makovicky (eds.), The Dinosauria, third edition. Cambridge University Press, Cambridge.
Dudgeon, T.W., H.C. Maddin, D.C. Evans and J.C. Mallon. (In press). The internal cranial anatomy of Champsosaurus: Implications for neurosensory function. Scientific Reports.
Mallon, J.C., J.R. Bura, D. Schumann and P.J. Currie. (In press). A problematic tyrannosaurid (Dinosauria: Theropoda) skeleton and its implications for tyrannosaurid diversity in the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta. Anatomical Record.
Dudgeon, T.W., H.C. Maddin, D.C. Evans and J.C. Mallon. 2020. Computed tomography (CT) analysis of the cranium of Champsosaurus lindoei and implications for the choristoderan neomorphic ossification. Journal of Anatomy. doi: 10.1111/joa.13134.
Gordon, I.J., H.H.T. Prins, J. Mallon, L.D. Puk, E.B.P. Miranda, C. Starling-Manne, R. van der Wal, B. Moore, W. Foley, L. Lush, R. Maestri, I. Matsuda and M. Clauss. 2019. The ecology of browsing and grazing in other vertebrate taxa. In I.J. Gordon and H.H.T. Prins (eds.), The Ecology of Browsing and Grazing II. Springer, Berlin. Pp. 339–404.
Mallon, J. 2019. Sauropods under one (very high) roof. Peer Community in Paleontology. 100003. 10.24072/pci.paleo.100003.
Mallon, J.C. 2019. Competition structured a Late Cretaceous megaherbivorous dinosaur assemblage. Scientific Reports. 9:15447. https://doi.org/10.1038/s41598-019-51709-5
Stewart, R.F. and J.C. Mallon. 2018. Allometric growth in the skull of Tylosaurus proriger (Squamata: Mosasauridae) and its taxonomic implications. Vertebrate Anatomy Morphology Palaeontology. 6:75–90.
Mallon, J.C. and D.B. Brinkman. Basilemys morrinensis, a new species of nanhsiungchelyid turtle from the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta, Canada. Journal of Vertebrate Paleontology. 38:e1431922.
Mallon, J.C., D.M. Henderson, C.M. McDonough and W.J. Loughry. 2018. A "bloat-and-float" taphonomic model best explains the upside-down preservation of ankylosaurs. Palaeogeography, Palaeoclimatology, Palaeoecology. 497:117–127.
Arbour, V. and J.C. Mallon. 2017. Unusual cranial and postcranial anatomy in the archetypal ankylosaur Ankylosaurus magniventris. FACETS. 2:764–794. doi:10.1139/facets-2017-0063
Hone, D.W.E. and J.C. Mallon. 2017. Protracted growth impedes the detection of sexual dimorphism in non-avian dinosaurs. Palaeontology. 60:535–545.
Mallon, J.C. 2017. Recognizing sexual dimorphism in the fossil record: Lessons from non-avian dinosaurs. Paleobiology. 43:495–507.
Xing, H., J.C. Mallon and M.L. Currie. 2017. Redescription of the skull of Edmontosaurus regalis (Ornithischia: Hadrosauridae), with comments on the phylogeny and biogeography of Hadrosaurinae. PLoS ONE. 12(4): e0175253. https://doi.org/10.1371/journal.pone.0175253
Ősi, A., E. Prondvai, J. Mallon and E.R. Bodor. 2017. Diversity and convergences in the evolution of feeding adaptations in ankylosaurs (Dinosauria: Ornithischia). Historical Biology. 29:539–570.
Ryan, M.J., R. Holmes, J. Mallon, M. Loewen and D.C. Evans. 2017. A basal ceratopsid (Centrosaurinae: Nasutoceratopsini) from the Campanian Oldman Formation (Campanian) of Alberta, Canada. Canadian Journal of Earth Sciences. 54:1–14.
Mallon, J.C., C.J. Ott, P.L. Larson, E.M. Iuliano and D.C. Evans. 2016. Spiclypeus shipporum gen. et sp. nov., a boldly audacious new chasmosaurine ceratopsid (Dinosauria: Ornithischia) from the Judith River Formation (Upper Cretaceous: Campanian) of Montana, USA. PLoS ONE. http://dx.plos.org/10.1371/journal.pone.0154218
Mallon, J.C., M.J. Ryan and J.A.Campbell, J.A. 2015. Skull ontogeny in Arrhinoceratops brachyops (Ornithischia: Ceratopsidae) and other horned dinosaurs. Zoological Journal of the Linnean Society. 175:910–929.
Mallon, J.C., D.C. Evans, T.T. Tokaryk and M.L. Currie. 2015. First pachycephalosaurid (Dinosauria: Ornithischia) from the Frenchman Formation (upper Maastrichtian) of Saskatchewan, Canada. Cretaceous Research 56:426–431.
Mallon, J.C. and J.S. Anderson. 2014. Jaw mechanics and the evolutionary palaeoecology of the megaherbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. Journal of Vertebrate Paleontology 35:e904323.
Xing, H., X. Zhao, K. Wang, D. Li, S. Chen, J.C. Mallon, Y. Zhang and X. Xu. 2014. Comparative osteology and phylogenetic relationship of Edmontosaurus and Shantungosaurus (Dinosauria: Hadrosauridae) from the Upper Cretaceous of North America and East Asia. Acta Geologica Sinica 88:1623–1652.
Mallon, J.C. and D.C. Evans. 2014. Taphonomy and habitat preference of North American pachycephalosaurids (Dinosauria: Ornithischia). Lethaia 47:567–578.
Mallon, J.C. and J.S. Anderson. 2014. The functional and palaeoecological implications of tooth morphology and wear for the megaherbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. PLoS ONE 9(6):e98605. doi:10.1371/journal.pone.0098605.
Mallon, J.C., R. Holmes, J.S. Anderson, A.A. Farke and D.C. Evans. 2014. New information on the rare horned dinosaur Arrhinoceratops brachyops (Ornithischia: Ceratopsidae). Canadian Journal of Earth Sciences 51:618–634.
Mallon, J.C. and Anderson, J.S. 2014. Implications of beak morphology for the evolutionary palaeoecology of the megaherbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 394:29–41.
Mallon, J.C. and Anderson, J.S. (2013). Skull ecomorphology of megaherbivorous dinosaurs from the Dinosaur Park Formation (Upper Campanian) of Alberta, Canada. PLoS ONE 8(7): e67182. doi:10.1371/journal.pone.0067182
Mallon, J.C., Evans, D.C., Ryan, M.J. and Anderson, J.S. (2013). Feeding height stratification among the herbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. BMC Ecology 13:14.
Mallon, J.C., Evans, D.C., Ryan, M.J. and Anderson, J.S. (2012). Megaherbivorous dinosaur turnover in the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 350–352:124–138.
Mallon, J.C., Holmes, R., Eberth, D.A., Ryan, M.J. and Anderson, J.S. (2011). Variation in the skull of Anchiceratops (Dinosauria, Ceratopsidae) from the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta. Journal of Vertebrate Paleontology 31:1047–1071.
Mallon, J.C. and Holmes, R. (2010). Description of a complete and fully articulated chasmosaurine postcranium previously assigned to Anchiceratops (Dinosauria: Ceratopsia). In Ryan, M.J., Chinnery-Algeier, B.J. and Eberth, D.A. (eds.), New Perspectives on Horned Dinosaurs. Indiana University Press, Bloomington. Pp. 189–202.
Fraser, D., Mallon, J.C., Furr, R. and Theodor, J.M. (2009). Improving the repeatability of low magnification microwear methods using high dynamic range imaging. Palaios 24:818–825.
Cuthbertson, R.S., Mallon, J.C., Campione, N.E. and Holmes, R.B. (2007). A new species of mosasaur (Squamata: Mosasauridae) from the Pierre Shale (lower Campanian) of Manitoba. Canadian Journal of Earth Sciences 44:593–606.
Mallon, J.C. and Holmes, R.B. (2006). A reevaluation of sexual dimorphism in the postcranium of the chasmosaurine ceratopsid Chasmosaurus belli (Dinosauria: Ornithischia). The Canadian Field-Naturalist 120:403–412.
In the Museum's Blog
Champsosaurus: CT scanning reveals its ear openings really were on the bottom of its skull
Carleton University student Thomas Dudgeon gets into the heads of the museum’s Champsosaurus to solve a Cretaceous ear mystery. Continue reading
Fossil solved great dinosaur cheek debate
Jordan Mallon's pick for a favourite fossil came down to a question of dinosaur cheeks. Continue reading