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Natalia Rybczynski, Ellesmere Island, Canada. Photo Marisa Gilbert
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Arcrtic landscape, aerial view. Photo Martin Lipman
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(From left to right) Natalia Rybczynski, Liz Ross and Mary Dawson, Haughton Crater. Photo Martin Lipman
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Camp site, Remus Creek, Ellesmere Island. Photo Marisa Gilbert
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Fuyles' Leaf Bed site, (from lef to right) Travis Mitchell, Marisa Gilbert, Natalia Rybczynski and John Gosse. Photo Martin Lipman
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Natalia Rybczynski (left) and Marisa Gilbert (right) sampling the Beaver Pond Site, Ellesmere Island, Canada. Photo Martin Lipman
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Field team Bylot Island.
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Natalia Rybczynski. Photo Marisa Gilbert
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Natalia Rybczynski, Strathcona Fiord, Ellesmere Island. Photo Marisa Gilbert

Select peer-reviewed publications

Mitchell, W.T., N. Rybczynski, C. Schröder-Adams, P.B. Hamilton, R. Smith & M. Douglas. 2016. Stratigraphic and Paleoenvironmental Reconstruction of a Mid-Pliocene fossil site in the High Arctic (Ellesmere Island, NU): Evidence of an Ancient Peatland with Beaver Activity. 69 (2): 185 - 204.

Fraser, Gorelick, R. & N. Rybczynski. 2015. Macroevolution and climate change influence phylogenetic community assembly of North American hoofed mammals. Biological Journal of the Linnean Society, 114: 485-494.

Fraser, D., C. Hassall, R. Gorelick, & N. Rybczynski. 2014. Mean Annual precipitation explains spatiotemporal patterns of mammal beta diversity and latitudinal diversity gradients in North America. PLoS ONE 9(9): 1 -10.  doi:10.1371/journal.pone.0106499.
 
Eberle, J.J., N. Rybczynski & D.R. Greenwood, (2014) Early Eocene mammals from the Driftwood Creek beds, Driftwood Canyon Provincial Park, northern British Columbia. Journal of Vertebrate Palaeontology 34(4): 739-746.
 
Fraser, D. & N. Rybczynski, 2014. Complexity of ruminant masticatory evolution. Journal of Morphology. DOI: 10.1002/jmor.20284
 
Cullen, T.M., D. Fraser, N. Rybczynski, and C. Schröder-Adams, 2014. Early evolution of sexual dimorphism and polygyny in Pinnipedia. Evolution 68(5):1469-1484. DOI: 10.1111/evo.12360
 
Davies, N.S., J. C. Gosse & N. Rybczynski. 2014. Cross-bedded woody debris from Pliocene forested river system in the High Arctic: Beaufort formation, Meighen Island, Canada. Journal of Sedimentary Research.  Journal of Sedimentary Research 84: 19–25.
 
Rybczynski N., J.C. Gosse, C.R. Harington, R.A. Wogelius, A.J. Hidy, and M. Buckley. 2013. Mid-Pliocene warm-period deposits in the High Arctic yield insight into camel evolution. Nature Communications. 4:1550 doi: 10.1038/ ncomms2516.
 
Cuthbertson R., A. Tirabasso, N Rybczynski, & R. Holmes. 2012. “Kinetic limitations of intracranial joints in Brachylophosaurus canadensis and Edmontosaurus regalis (Dinosauria: Hadrosauridae), and their implications for the chewing mechanics of Hadrosaurids”. Journal of Anatomy 295: 968-979.
 
Csank, A.Z., W.P. Patterson, B.M. Eglington, N. Rybczynski, & J.F. Basinger. 2011. Climate variability in the Early Pliocene Arctic: Annually resolved evidence from stable isotope values of sub-fossil wood, Ellesmere Island, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 308: 339-349.
 
Csank, A.Z. A. Tripati, W.P. Patterson, R.A. Eagle, N. Rybczynski, A.P. Ballantyne & J. Eiler. 2011. Estimates of Arctic land surface temperatures during the early Pliocene from two novel proxies. Earth and Planetary Science Letters. 304(3-4): 291-299.
 
Fontanella JE, Fish FE, Rybczynski N, Nweeia M. Ketten DR., 2010. Three-dimenstional geometry of the narwhal (Monodon monoceros) flukes in relation to hydrodynamics. Marine Mammal Science. 27(4): 889-898.
 
Rybczynski N, Ross EM, Samuels JX, Korth WW. 2010. Re-evaluation of Sinocastor (Rodentia: Castoridae) with implications on the origin of modern beavers. PLoS ONE. 5(11): e13990. doi:10.1371/journal.pone.0013990.
 
Ballantyne, A.P., D.R. Greenwood, J.S. Sinninghe Damsté, A.Z. Csank, J.J. Eberle and N. Rybczynski. 2010. Significantly warmer Arctic surface temperatures during the Pliocene indicated by multiple independent proxies. Geology. 38(7): 603-606.
 
Rybczynski, N., M.R. Dawson and R.H. Tedford. 2009. A semi-aquatic Arctic mammalian carnivore from the Miocene Epoch and origin of Pinnipedia. Nature. 458: 1021-1024.
 
Murray, A.M., Cumbaa, S.L., Harington, C.R., Smith, G.R. and Rybczynski, N. (2009). Early Pliocene Fish Remains from Arctic Canada Support a Pre-Pleistocene Dispersal of Percids (Teleostei: Perciformes). Canadian Journal of Earth Sciences 46: 557-570.
 
Rybczynski, N. (2008). Woodcutting Behavior in Beavers (Castoridae, Rodentia): Estimating Ecological Performance in a Modern and a Fossil Taxon. Palaeobiology 34(3): 389-402.
 
Rybczynski, N., Tirabasso, A., Cuthbertson, R. and Holliday, C. (2008). A 3D Animation Model of Edmontosaurus (Hadrosauridae) Skull for Testing Chewing Hypotheses. Paleontologica Electronica 11(2):1-14.
http://palaeo-electronica.org/2008_2/132/index.html (Web site consulted November 19, 2008) exit-notice link title required
 
Rybczynski, N. (2007). Castorid Phylogenetics: Implications for the Evolution of Swimming and Tree Exploitation in Beavers. Journal of Mammalian Evolution 14: 1-35.
 
Vavrek, M.J., Larsson, H.C.E., Rybczynski, N. (2007). A Late Triassic Flora from East-Central Axel-Heiberg Island, Nunavut, Canada. Canadian Journal of Earth Sciences 44: 1653-1659.
 
Ballantyne, A.P., Rybczynski, N. Baker, P. Harington, C.R., White, D. (2006). Pliocene Arctic Temperature Constraints from the Growth Rings and Isotopic Composition of Fossil Larch Wood. Palaeogeography, Palaeoclimatology, Palaeoecology. 242 (3,4): 188-200.
 
Korth, W.W. and Rybczynski, N. (2003). A New Unusual Castorid (Rodentia) from the Earliest Miocene of Nebraska. Journal of Vertebrate Paleontology 23(3): 667-675.
 
Rybczynski, N. and Reisz, R.R. (2001). Earliest Evidence for Efficient Oral Processing in a Terrestrial Herbivore. Nature 411: 684-687.
 
Rybczynski, N. and Vickaryous, M.K. (2001). Evidence of Complex Jaw Movement in the Late Cretaceous Ankylosaurid, Euoplocephalus tutus (Dinosauria: Thyreophora) pp. 299-317 In Carpenter, K. (ed.), The Armored Dinosaurs. Indiana University Press, Bloomington.
 
Modesto, S. and Rybczynski, N. (2000). A Review of the Late Permian Amniote Faunas of Russia. pp. 17-33 In Benton, M.J., Kurochkin, E.N., Novikov, I.V., Shishkin, M.A. and Unwin, S.M. (eds), The Age of Dinosaurs in Russia and Mongolia: Fossil vertebrates from the Permian and Mesozoic of the former Soviet Union and Mongolia. Cambridge University Press, Cambridge.
 
Rybczynski, N. (2000). Cranial Anatomy and Phylogenetic Position of the Basal Anomodont (Therapsida), Suminia getmanovi. Zoological Journal of the Linnean Society 130 (3): 329-373.

Book contributions

Rybczynski, N. 2015. “Introduction: Origins and Evolution”. pp, Xvii-xxiii, in M. Runtz.  “Dam Builders - The Natural History of Beavers and Their Ponds”. Fitzhenry & Whiteside, Toronto.
 
Fensome, R., R. Blakey, J. Clague, C. Harrison, J. Monger, J. Storer, G. Williams, S. Dehler, A. Duk-Rodkin, D. Eberth, C. Hickson, D. Leckie, A. MacRae, R. Mathewes, W. Nassichuk, R. Price, N. Rybczynski, H. Wielens, M-C Wiliamson & C. Yarath. 2014. Final approach: Canada 55 to today.” Pp 192-215, In Fensome, R., G. Williams, A. Achab, J. Clague, D. Corrigan, J. Monger & G. Nowlan (eds)  “In “Four Billion Years and Counting: Canada's Geological Heritage. Toronto: Canadian Federation of Earth Sciences. 402 pp.
 
Rybczynski, N. & M. Lipman. 2014. Arctic Camel. Pp 66-67. In Ed: Hund, A.J. “Antarctica and the Arctic Circle: A Geographic Encyclopedia of the Earth's Polar Regions. Vol 1”. Santa Barbara, California: ABC-CLIO, LLC. 848 pp.
 
Rybczynski, N. & M. Lipman. 2014. Pliocene Arctic Fossils. Pp 568-570. In Ed: Hund, A.J. “Antarctica and the Arctic Circle: A Geographic Encyclopedia of the Earth's Polar Regions. Vol 1”. Santa Barbara, California: ABC-CLIO, LLC. 848 pp