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2016 | 61 | 1 |

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A new Arctic hadrosaurid from the Prince Creek Formation (lower Maastrichtian) of northern Alaska

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The Liscomb bonebed in the Price Creek Formation of northern Alaska has produced thousands of individual bones of a saurolophine hadrosaurid similar to Edmontosaurus; however, the specific identity of this taxon has been unclear, in part because the vast majority of the remains represent immature individuals. In this study, we address the taxonomic status of the Alaskan material through a comparative and quantitative morphological analysis of juvenile as well several near adult-sized specimens with particular reference to the two known species of Edmontosaurus, as well as a cladistic analysis using two different matrices for Hadrosauroidea. In the comparative morphological analysis, we introduce a quantitative method using bivariate plots to address ontogenetic variation. Our comparative anatomical analysis reveals that the Alaskan saurolophine possesses a unique suite of characters that distinguishes it from Edmontosaurus, including a premaxillary circumnarial ridge that projects posterolaterally without a premaxillary vestibular promontory, a shallow groove lateral to the posterodorsal premaxillary foramen, a relatively narrow jugal process of the postorbital lacking a postorbital pocket, a relatively tall maxilla, a relatively gracile jugal, a more strongly angled posterior margin of the anterior process of the jugal, wide lateral exposure of the quadratojugal, and a short symphyseal process of the dentary. The cladistic analyses consistently recover the Alaskan saurolophine as the sister taxon to Edmontosaurus annectens + Edmontosaurus regalis. This phylogenetic assessment is robust even when accounting for ontogenetically variable characters. Based on these results, we erect a new taxon, Ugrunaaluk kuukpikensis gen. et sp. nov. that contributes to growing evidence for a distinct, early Maastrichtian Arctic dinosaur community that existed at the northernmost extent of Laramidia during the Late Cretaceous.








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  • Department of Geosciences, University of Alaska Fairbanks, 900 Yukon Drive, Fairbanks, AK 99775-5780, USA
  • University of Alaska Museum, 907 Yukon Drive, Fairbanks, AK 99775, USA
  • Saikai City Board of Education; Setoitanoura Go, Oseto Cho, Saikai City, Nagasaki Prefecture, 857-2301, Japan
  • University of Alaska Museum, 907 Yukon Drive, Fairbanks, AK 99775, USA
  • Department of Geosciences, University of Alaska Fairbanks, 900 Yukon Drive, Fairbanks, AK 99775-5780, USA
  • Department of Biological Science, Florida State University, 319 Stadium Drive, Tallahassee, FL 32306-4295, USA


  • Baer, K.E.V. 1828. Über Entwicklungsgeschichte der Thiere. Beobachtung und Reflexion, Theil 1. 734 pp. Gebrüder Bornträger, Königsberg.
  • Besse, J. and Courtillot, V. 1991. Revised and synthetic apparent polar wander paths of the African, Eurasian, North American and Indian plates, and true polar wander since 200 Ma. Journal of Geophysical Research 96: 4029–4050.
  • Blakey, R.C. 2009. Paleogeography and Geologic Evolution of North America
  • Bolotsky, Y. L. and Godefroit, P. 2004. A new hadrosaurine dinosaur from the Late Cretaceous of Far Eastern Russia. Journal of Vertebrate Paleontology 24: 351–365.
  • Brett-Surman, M.K. 1989. A Revision of the Hadrosauridae (Reptilia: Ornithischia) and Their Evolution During the Campanian and Maastrichtian. 297 pp. Unpublished Ph.D. Thesis, George Washington University, Washington DC.
  • Brouwers, E.M. and Deckker, P.D. 1993. Late Maastrichtian and Danian ostracode faunas from Northern Alaska; reconstructions of environment and paleogeography. Palaios 8: 140–154.
  • Brouwers, E.M., Clemens, W.A., Spicer, R.A., Ager, T.A., Carter, L.D., and Sliter, W.V. 1987. Dinosaurs on the North Slope, Alaska: High latitude, latest Cretaceous environments. Science 237: 1608–1610.
  • Brown, B. 1913. The skeleton of Saurolophus, a crested duck-billed dinosaur from the Edmonton Cretaceous. Bulletin of the American Museum of Natural History 32: 387–393.
  • Brown, B. 1914. Corythosaurus casuarius, a new crested dinosaur from the Belly River Cretaceous; with provisional classification of the family Trachodontidae. Bulletin of the American Museum of Natural History 33: 559–565.
  • Brown, C.M. and Druckenmiller, P.S. 2011. Basal ornithopod (Dinosauria: Ornithischia) teeth from the Prince Creek Formation (early Maastrichtian) of Alaska. Canadian Journal of Earth Sciences 48: 1342–1354.
  • Campione, N.E. and Evans, D.C. 2011. Cranial growth and variation in edmontosaurs (Dinosauria: Hadrosauridae): Implications for latest Cretaceous megaherbivore diversity in North America. PLoS ONE 6: e25186.
  • Campione, N.E., Bink, K.S., Feedman, E.A., McGarrity, C.T., and Evans, D.C. 2012. “Glishades ericksoni”, an indeterminate juvenile hadrosaurid from the Two Medicine Formation of Montana: implications for hadrosauroid diversity in the latest Cretaceous (Campanian–Maastrichtian) of western North America. Palaeobiodiversity and Palaeoenvironments 93: 65–75.
  • Clemens, W.A. and Nelms, L.G. 1993. Paleoecological implications of Alaskan terrestrial vertebrate fauna in latest Cretaceous time at high paleolatitudes. Geology 21: 503–506.
  • Cope, E.D. 1869. Synopsis of the extinct Batrachia and Reptilia of North America. Transactions of the American Philosophical Society 14: 1–252.
  • Davies, K.L. 1987. Duck-bill dinosaurs (Hadrosauridae, Ornithischia) from the North Slope of Alaska. Journal of Paleontology 61: 198–200.
  • Dodson, P. 1975a. Functional and ecological significance of relative growth in Alligator. Journal of Zoology 175: 315–355.
  • Dodson, P. 1975b. Relative growth in two sympatric species of Sceloporus. American Midland Naturalist 94: 421–450.
  • Dodson, P. 1975c. Taxonomic implications of relative growth in lambeosaurine hadrosaurs. Systematic Zoology 24: 37–54.
  • Druckenmiller, P.S., Erickson, G.M., Brinkman, D., Brown, C., and Mori, H. 2013. Evidence for a distinct, early Maastrichtian polar dinosaur fauna from the Prince Creek Formation of northern Alaska. Journal of Vertebrate Paleontology, Program and Abstracts 2013: 117.
  • Eberth, D.A., Evans, D.C., Brinkman, D.B., Therrien, F., Tanke, D.H., andRussell, L.S. 2013. Dinosaur biostratigraphy of the Edmonton Group (Upper Cretaceous), Alberta, Canada: evidence for climate influence. Canadian Journal of Earth Sciences 50: 701–726.
  • Erickson, G.M. and Druckenmiller, P.S. 2011. Longevity and growth rate estimates for a polar dinosaur: a Pachyrhinosaurus (Dinosauria: Neoceratopsia) specimen from the North Slope of Alaska showing a complete developmental record. Historical Biology 23: 327–334.
  • Falster, D.S., Warton, D.I., and Wright, I. J. 2006. SMATR: Standardized Major Axis Tests and Routines. Version 2.0. au/ecology/SMATR/
  • Fiorillo, A.R. 2008a. Dinosaurs of Alaska: Implications for the Cretaceous origin of Beringia. In: R.B. Blodgett and G. Stanley (eds.), The Terrane Puzzle: New Perspectives on Paleontology and Stratigraphy from the North American Cordillera. Geological Society of America Special Paper 442: 313–326.
  • Fiorillo, A.R. 2008b. On the occurrence of exceptionally large teeth of Troodon (Dinosauria: Saurischia) from the Late Cretaceous of northern Alaska. Palaios 23: 322–328.
  • Fiorillo, A.R. and Gangloff, R.A. 2001. The caribou migration model for Arctic hadrosaurs (Dinosauria: Ornithischia): A reassessment. Historical Biology 15: 323–334.
  • Fiorillo, A.R. and Tykoski, R.S. 2012. A new Maastrichtian species of the centrosaurine ceratopsid Pachyrhinosaurus from the North Slope of Alaska. Acta Palaeontologica Polonica 57: 561–573. Fiorillo, A.R. and Tykoski, R.S. 2014. A diminutive new tyrannosaur from the top of the world. PLoS ONE 9: e91287.
  • Fiorillo, A.R., McCarthy, P.J., and Flaig, P.P. 2010. Taphonomic and sedimentologic interpretations of the dinosaur-bearing Upper Cretaceous Strata of the Prince Creek Formation, Northern Alaska: Insights from an ancient high-latitude terrestrial ecosystem. Palaeogeography, Palaeoclimatology, Palaeoecology 295: 376–388.
  • Fiorillo, A.R., McCarthy, P.J., Brandlen, E., Flaig, P.P., Norton, D., Jacobs, L., Zippi, P., and Gangloff, R.A. 2007. Paleontology, sedimentology, paleopedology, and palynology of the Kikak-Tegoseak Quarry (Prince Creek Formation, Late Cretaceous), Northern Alaska. In: D. R. Braman (ed.), Ceratopsian Symposium: Short Papers, Abstracts and Programs, 48–49. Royal Tyrrell Museum of Palaeontology, Drumheller.
  • Fiorillo, A.R., Tykoski, R.S., Currie, P.J., McCarthy, P.J., and Flaig, P. 2009. Description of two partial Troodon braincases from the Prince Creek Formation (Upper Cretaceous), North Slope Alaska. Journal of Vertebrate Paleontology 29: 178–187.
  • Flaig, P.P. 2010. Depositional Environments of the Late Cretaceous (Maastrichtian) Dinosaur-Bearing Prince Creek Formation: Colville River Region, North Slope, Alaska. 311 pp. Unpublished Ph.D. thesis, University of Alask Fairbanks, Fairbanks.
  • Flaig, P.P., McCarthy, P.J., and Fiorillo, A.R. 2011. A tidally influenced, high-latitude coastal-plain: The upper Cretaceous (Maastrichtian) Prince Creek Formation, North Slope, Alaska. In: S.K. Davidson, S. Leleu, and C.P. North (eds.), From River to Rock Record: The Preservation of Fluvial Sediments and Their Subsequent Interpretation, 233–264. SEPM (Society for Sedimentary Geology), Tulsa.
  • Flaig, P.P., McCarthy, P.J., and Fiorillo, A.R. 2013. Anatomy, evolution, and paleoenvironmental interpretation of an ancient arctic coastal plain: integrated paleopedology and palynology from the Upper Cretaceous (Maastrichtian) Prince Creek Formation, North Slope, Alaska, USA. In: S.G. Driese and L.C. Nordt (eds.), New Frontiers in Paleopedology and Terrestrial Paleoclimatology: Paleosols and Soil Surface Analog Systems, 179–230. SEPM (Society for Sedimentary Geology), Tulsa.
  • Flores, R.M., Myers, M.D., Houseknecht, D.W., Stricker, G.D., Brizzolara, D.W., Ryherd, T.J., and Takahashi, K.I. 2007. Stratigraphy and facies of Cretaceous Schrader Bluff and Prince Creek Formations in Colville River Bluffs, North Slope, Alaska. United States Geological Survey Professional Paper 1747: 1–52.
  • Frederiksen, N.O. 1991. Pollen zonation and correlation of Maastrichtian marine beds and associated strata, Ocean Point dinosaur locality, NorthSlope, Alaska. United States Geological Survey Bulletin 1990-E: 1–24.
  • Frederiksen, N.O., Ager, T.A., and Edwards, L.E. 1988. Palynology of Maastrichtian and Paleocene rocks, lower Colville River region, North Slope of Alaska. Canadian Journal of Earth Sciences 25: 512–527.
  • Frederiksen, N.O., Mclntyre, D.J., and Sheehan, T.P. 2002. Palynological dating of some Upper Cretaceous to Eocene outcrop and well samples from the region extending from the easternmost part of NPRA in Alaskato the western part of Arctic National Wildlife Refuge, North Slope of Alaska. U.S. Geological Survey Open-File Report 02-405: 1–37. Gangloff, R.A. 1994. The record of Cretaceous dinosaurs in Alaska: an overview. In: D.K. Thurston and K. Fujita (eds.), Proceedings of the 1992 International Conference on Arctic Margins, 399–404. Alaska Geological Society, Anchorage.
  • Gangloff, R.A. 1998. Arctic dinosaurs with emphasis on the Cretaceous record of Alaska and the Eurasian-North American connection. New Mexico Museum of Natural History and Science Bulletin 14: 211–220.
  • Gangloff, R.A. and Fiorillo, A.R. 2010. Taphonomy and paleoecology of a bonebed from the Prince Creek Formation, North Slope, Alaska. Palaios 25: 299–317.
  • Gangloff, R.A., Fiorillo, A.R., and Norton, D.W. 2005. The first pachycephalosaurine (Dinosauria) from the paleo-Arctic of Alaska and its paleogeographic implications. Journal of Paleontology 79: 997–1001.
  • Gates, T.A. and Sampson, S.D. 2007. A new species of Gryposaurus (Dinosauria: Hadrosauridae) from the late Campanian Kaiparowits Formation, southern Utah, USA. Zoological Journal of the Linnean Society 151: 351–376.
  • Gates, T.A., Horner, J.R., Hanna, R.R., and Nelson, C.R. 2011. New unadorned hadrosaurine hadrosaurid (Dinosauria, Ornithopoda) from the Campanian of North America. Journal of Vertebrate Paleontology 31: 798–811.
  • Godefroit, P., Bolotsky, Y.L., and Lauters, P. 2012. A new saurolophine dinosaur from the Latest Cretaceous of far Eastern Russia. PLoS ONE 7: e36849.
  • Goloboff, P.A. 2008. Bremer Support Script. Version 1.0. http://tnt.insectmuseum. org/index.php/Main_Page
  • Goloboff, P.A., Farris, J.S., and Nixon, K.C. 2008. TNT, a free program for phylogenetic analysis. Cladistics 24: 774–786.
  • Gryc, G., Patton, W.W., Jr, and Payne, T.G. 1951. Present Cretaceous stratigraphic nomenclature of northern Alaska. Journal of the Washington Academy of Sciences 41: 159–167.
  • Harper, D.A.T. and Ryan, P.D. 2001. PAST: paleontological statistics software package for education and data analysis. Palaeontologia Electronica 4: 1–9.
  • Horner, J.R. 1983. Cranial osteology and morphology of the type specimen of Maiasaura peeblesorum (Ornithischia: Hadrosauridae), with discussion of its phylogenetic position. Journal of Vertebrate Paleontology 3: 29–38.
  • Horner, J.R. 1992. Cranial morphology of Prosaurolophus (Ornithischia:
  • Hadrosauridae) with descriptions of two new hadrosaurid species and an evaluation of hadrosaurid phylogenetic relationships. Museum of the Rockies Occasional Paper 2: 1–119.
  • Horner, J. R. and Currie, P. J., 1994. Embryonic and neonatal morphology and ontogeny of a new species of Hypacrosaurus (Ornithischia, Lambeosauridae) from Montana and Alberta. In: K. H. Carpenter, Karl F. and J. R. Horner (eds.), Dinosaur Eggs and Babies, 312–336. Cambridge University Press, Cambridge, UK.
  • Horner, J.R., Weishampel, D.B., and Forster, C.A. 2004. Hadrosauridae. In: D.B. Weishampel, P. Dodson, and H. Osmólska (eds.), The Dinosauria 2 ed, 438–463. University of California Press, Berkeley.
  • Hu, C.-C. 1972. A new hadrosaur from the Cretaceous of Chucheng, Shantung. Acta Geologica Sinica 2: 179–202.
  • Kitching, I., Forey, P.L., Humphries, C.J., and Williams, D.M. 1998. Cladistics: The Theory and Practice of Parsimony Analysis. 2 ed., 228 pp. Oxford University Press, Oxford.
  • Lambe, L.M. 1914. On Gryposaurus notabilis, a new genus and species of trachodont dinosaur from the Belly River Formation of Alberta, with a description of the skull of Chasmosaurus belli. The Ottawa Naturalist 27: 145–155.Lambe, L.M. 1917. A new genus and species of crestless hadrosaur from the Edmonton Formation of Alberta. Ottawa Naturalist 31: 65–73.
  • Lawver, L.A., Grantz, A., and Gahagan, L.M. 2002. Plate kinematic evolution of the present Arctic region since the Ordovician. Geological Society of America Special Paper 360: 333–358.
  • Lull, R.S. and Wright, N.E. 1942. Hadrosaurian dinosaurs of North America. Geological Society of America Special Papers 40: 1–242.
  • Maddison, W.P., and Maddison, D.R. 2011. Mesquite: a Modular System for Evolutionary Analysis. Version 2.75.
  • Marsh, O.C. 1881. Principal characters of American Jurassic dinosaurs, IV. American Journal of Science 3: 167–170.
  • Marsh, O.C. 1892. Notice of new reptiles from the Laramie Formation. American Journal of Science 3: 449–453.
  • Maryańska, T. and Osmólska, H. 1981. Cranial anatomy of Saurolophus angustirostris with comments on the Asian Hadrosauridae (Dinosauria). Palaeontologia Polonica 42: 5–24.
  • McKee, E., Conrad, J.E., and Tuin, B.D. 1989. Better dates for arctic dinosaurs. Eos 70: 74.
  • Mori, H. 2014. Osteology, Relationships And Paleoecology of a New Arctic Hadrosaurid (Dinosauria: Ornithopoda) From the Prince Creek Formation of Northern Alaska. 333 pp. Unpublished Ph.D. Thesis, University of Alaska Fairbanks, Fairbanks.
  • Mull, C.G., Houseknecht, D.W., and Bird, K.J. 2003. Revised Cretaceous and Tertiary stratigraphic nomenclature in the Colville Basin, northern Alaska. U.S. Gelogical Survey Professional Paper 1673: 1–51.
  • Nelms, L.G. 1989. Late Cretaceous dinosaurs from the North Slope of Alaska. Journal of Vertebrate Paleontology, Abstracts of Papers 9: 34A.
  • Nelson, G.J. 1978. Ontogeny, phylogeny, paleontology, and the biogenetic law. Systematic Zoology 27: 324–345.
  • Parrish, J.T. and Spicer, R.A. 1988. Late Cretaceous terrestrial vegetation: A near-polar temperature curve. Geology 16: 22–25.
  • Pearson, K. 1901. On lines and planes of closest fit to systems of points in space. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 2: 559–572.
  • Prieto-Márquez, A. 2008. Phylogeny and Historical Biogeography of Hadrosaurid Dinosaurs. 861 pp. Unpublished Ph.D. Thesis, Tallahassee.
  • Prieto-Márquez, A. 2010a. Global phylogeny of Hadrosauridae (Dinosauria: Ornithopoda) using parsimony and Bayesian methods. Zoological Journal of the Linnean Society 159: 435–502.
  • Prieto-Márquez, A. 2010b. The braincase and skull roof of Gryposaurus notabilis (Dinosauria, Hadrosauridae), with a taxonomic revision of the genus. Journal of Vertebrate Paleontology 30: 838–854.
  • Prieto-Márquez, A. 2011. Cranial and appendicular ontogeny of Bactrosaurus johnsoni, a hadrosauroid dinosaur from the Late Cretaceous of northern China. Palaeontology 54: 773–792.
  • Prieto-Márquez, A. 2012. The skull and appendicular skeleton of Gryposaurus latidens, a saurolophine hadrosaurid (Dinosauria: Ornithopoda) from the early Campanian (Cretaceous) of Montana, USA. Canadian Journal of Earth Sciences 49: 510–532.
  • Prieto-Márquez, A. 2013. Skeletal morphology of Kritosaurus navajovius (Dinosauria: Hadrosauridae) from the Late Cretaceous of the North American south-west, with an evaluation of the phylogenetic systematics and biogeography of Kritosaurini. Journal of Systematic Palaeontology 12: 133–175.
  • Prieto-Márquez, A. 2014. A juvenile Edmontosaurus from the late Maastrichtian (Cretaceous) of North America: Implications for ontogeny and phylogenetic inference in saurolophine dinosaurs. Cretaceous Research 50: 282–303.
  • Prieto-Márquez, A., Wagner, J.R., Bell, P., and Chiappe, L.M. 2014. The late-surviving “duck-billed” dinosaur Augustynolophus from the upper Maastrichtian of western North America and crest evolution in Saurolophini. Geological Magazine 152: 225–241.
  • Sampson, S.D., Loewen, M.A., Farke, A.A., Roberts, E.M., Forster, C.A., Smith, J.A., and Titus, A.L. 2010. New horned dinosaurs from Utah provide evidence for intracontinental dinosaur endemism. PLoS ONE 5: e12292.
  • Sampson, S.D. Lund, E.K., Loewen, M.A., Farke, A.A., and Clayon, K.E. 2013. A remarkable short-snouted horned dinosaur from the Late Cretaceous (late Campanian) of southern Laramidia. Proceedings of the Royal Society B 280: 20131186.
  • Schuyler, W.H. 2004. Reading Statistics and Research. 4th Editon. 544 pp. Pearson, Boston.
  • Seeley, H.G. 1887. Researches on the structure, organization, and classification of the fossil reptilia. I. On Protorosaurus Speneri (von Meyer). Philo sophical Transactions of the Royal Society of London B 178: 187–213.
  • Smith, R.J. 2009. Use and misuse of the reduced major axis for line-fitting. American Journal of Physical Anthropology 140: 476–486.
  • Spicer, R.A. and Herman, A.B. 2010. The Late Cretaceous environment of the Arctic: A quantitative reassessment based on plant fossils. Palaeogeography, Palaeoclimatology, Palaeoecology 295: 423–442.
  • Spicer, R.A. and Parrish, J.T. 1990. Late Cretaceous–early Tertiary palaeoclimates of northern high latitudes: a quantitative view. Journal of the Geological Society, London Journal of the Geological Society 147: 329–341.
  • Spicer, R.A., Parrish, J.T., and Grant, P.R. 1992. Evolution of vegetation and coal-forming environments in the Late Cretaceous of the North Slope of Alaska. Geological Society of America Special Papers 267: 177–192.
  • Sternberg, C.M. 1953. A new hadrosaur from the Oldman Formation of Alberta: discussion of nomenclature. National Museum of Canada, Bulletin 128: 275–286.
  • Sullivan, R.M. 2006. A taxonomic review of the Pachycephalosauridae (Dinosauria: Ornithischia). New Mexico Museum of Natural History and Science Bulletin 35: 347–365.
  • Tsuihiji, T., Watabe, M., Tsogtbaatar, K., Tsubamoto, T., Barsbold, R., Suzuki, S., Lee, A.H., Ridgely, R.C., Kawahara, Y., and Witmer, L.M. 2011. Cranial osteology of a juvenile specimen of Tarbosaurus bataar (Theropoda, Tyrannosauridae) from the Nemegt Formation (Upper Cretaceous) of Bugin Tsav, Mongolia. Journal of Vertebrate Paleontology 31: 497–517.
  • Warton, D.I., Wright, I.J., Falster, D.S., and Westoby, M. 2006. Bivariate line-fitting methods for allometry. Biological Reviews 81: 259–291.
  • Watanabe, A., Erickson, G.M. and Druckenmiller, P.S. 2013. An ornithomimosaurian from the Upper Cretaceous Prince Creek Formation of Alaska. Journal of Vertebrate Paleontology 33: 1169–1175.
  • Witte, W.K., Stone, D.B., and Mull, C.G., 1987. Paleomagnetism, paleobotany, and paleogeography of the Cretaceous, North Slope, Alaska. In: I.L. Tailleur and P. Weimer (eds.), Alaska North Slope Geology, 571–579. Pacific Section, Society of Economic Paleontologists and Mineralogists, Bakersfield.
  • Xing, H., Zhao, X., Wang, K. Li, D., Chen, S., Jordan, C.M., Zhang, Y., and Xu, X. 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 (English Edition) 88: 1623–1652.

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