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 largely 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 structure and biogeography. 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.
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.
- Recommender, Peer Community in Paleontology.
- Communications Committee, Society of Vertebrate Paleontology.
- Marissa Livius (M.Sc., Carleton University).
- Bryan Moore (M.Sc., Carleton University).
- Arielle Noonan (B.Sc., University of Ottawa).
- Mat Roloson (M.Sc., Carleton University).
- Jonathan Bura (B.Sc., University of Ottawa).
- Brigid Christison (independent study, Carleton University).
- Pearl Cohen (independent study, Carleton University).
- Tom Dudgeon (M.Sc., Carleton University).
- Zoe Landry (independent study, Carleton University).
- Robbie Stewart (B.Sc., Carleton University).
- Taia Wyenberg-Henzler (M.Sc., Carleton University).
Google Scholar Profile
Let's Talk Science Profile
Open-access journal Vertebrate Anatomy Morphology Palaeontology
Society of Vertebrate Paleontology
Canadian Society of Vertebrate Palaeontology
Department of Earth Sciences, Carleton University
Hone, D., J.C. Mallon, P. Hennessey and L.M. Witmer. 2020. Ontogeny of a sexually selected structure in an extant archosaur Gavialis gangeticus (Pseudosuchia: Crocodylia) with implications for sexual dimorphism in dinosaurs. PeerJ 8: e9134. https://doi.org/10.7717/peerj.9134
Dudgeon, T.W., H.C. Maddin, D.C. Evans and J.C. Mallon. 2020. The internal cranial anatomy of Champsosaurus: Implications for neurosensory function. Scientific Reports 10: 7122. https://doi.org/10.1038/s41598-020-63956-y
Christison, B.E., D.H. Tanke and J.C. Mallon. 2020. Canada's first known dinosaurs: Palaeontology and collecting history of Upper Cretaceous vertebrates in southern Alberta and Saskatchewan, 1874-1889. Earth Sciences History 39: 184–218. https://doi.org/10.17704/1944-6187-39.1.184
Mallon, J.C., J.R. Bura, D. Schumann and P.J. Currie. 2020. A problematic tyrannosaurid (Dinosauria: Theropoda) skeleton and its implications for tyrannosaurid diversity in the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta. Anatomical Record 303: 673–690. https://doi.org/10.1002/ar.24199
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 236: 630–659. https://doi.org/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. https://doi.org/10.1007/978-3-030-25865-8_15
Mallon, J. 2019. Sauropods under one (very high) roof. Peer Community in Paleontology 100003. https://doi.org/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. https://doi.org/10.18435/vamp29339
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. https://doi.org/10.1080/02724634.2018.1431922
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. https://doi.org/10.1016/j.palaeo.2018.02.010
Arbour, V. and J.C. Mallon. 2017. Unusual cranial and postcranial anatomy in the archetypal ankylosaur Ankylosaurus magniventris. FACETS 2: 764–794. https://doi.org/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. https://doi.org/10.1111/pala.12298
Mallon, J.C. 2017. Recognizing sexual dimorphism in the fossil record: Lessons from non-avian dinosaurs. Paleobiology 43: 495–507. https://doi.org/10.1017/pab.2016.51
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: 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. https://doi.org/10.1080/08912963.2016.1208194
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. https://doi.org/10.1139/cjes-2016-0110
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 11: e0154218. 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. https://doi.org/10.1111/zoj.12294
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. https://doi.org/10.1016/j.cretres.2015.06.005
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. https://doi.org/10.1080/02724634.2014.904323
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. https://doi.org/10.1111/1755-6724.12334
Mallon, J.C. and D.C. Evans. 2014. Taphonomy and habitat preference of North American pachycephalosaurids (Dinosauria: Ornithischia). Lethaia 47: 567–578. https://doi.org/10.1111/let.12082
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: e98605. https://doi.org/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. https://doi.org/10.1139/cjes-2014-0028
Mallon, J.C. and J.S. Anderson. 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. https://doi.org/10.1016/j.palaeo.2013.11.014
Mallon, J.C. and J.S. Anderson. 2013. Skull ecomorphology of megaherbivorous dinosaurs from the Dinosaur Park Formation (Upper Campanian) of Alberta, Canada. PLoS ONE 8: e67182. https://doi.org/10.1371/journal.pone.0067182
Mallon, J.C., D.C. Evans, M.J. Ryan and J.S. Anderson. 2013. Feeding height stratification among the herbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. BMC Ecology 13: 14. https://doi.org/10.1186/1472-6785-13-14
Mallon, J.C., D.C. Evans, M.J. Ryan and J.S. Anderson. 2012. Megaherbivorous dinosaur turnover in the Dinosaur Park Formation (upper Campanian) of Alberta, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 350–352: 124–138. https://doi.org/10.1016/j.palaeo.2012.06.024
Mallon, J.C., R. Holmes, D.A. Eberth, M.J. Ryan and J.S. Anderson. 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. https://doi.org/10.1080/02724634.2011.601484
Mallon, J.C. and R. Holmes. 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., J.C. Mallon, R. Furr and J.M. Theodor. 2009. Improving the repeatability of low magnification microwear methods using high dynamic range imaging. Palaios 24: 818–825. https://doi.org/10.2110/palo.2009.p09-064r
Cuthbertson, R.S., J.C. Mallon, N.E. Campione and R.B. Holmes. 2007. A new species of mosasaur (Squamata: Mosasauridae) from the Pierre Shale (lower Campanian) of Manitoba. Canadian Journal of Earth Sciences 44: 593–606. https://doi.org/10.1139/e07-006
Mallon, J.C. and R.B. Holmes. 2006. A reevaluation of sexual dimorphism in the postcranium of the chasmosaurine ceratopsid Chasmosaurus belli (Dinosauria: Ornithischia). The Canadian Field-Naturalist 120: 403–412. http://dx.doi.org/10.22621/cfn.v120i4.347
In the Museum's Blog
Science in Isolation: Palaeontology in My Basement
Join Jordan Mallon, the museum’s dinosaur palaeontologist, as he describes how he is able to continue working from home during the COVID-19 pandemic.
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