Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2012 | 57 | 3 |
Tytuł artykułu

A new Maastrichtian species of the centrosaurine ceratopsid Pachyrhinosaurus from the North Slope of Alaska

Treść / Zawartość
Warianty tytułu
Języki publikacji
The Cretaceous rocks of the Prince Creek Formation contain the richest record of polar dinosaurs found anywhere in the world. Here we describe a new species of horned dinosaur, Pachyrhinosaurus perotorum that exhibits an apomorphic character in the frill, as well as a unique combination of other characters. Phylogenetic analysis of 16 taxa of ceratopsians failed to resolve relationships between P. perotorum and other Pachyrhinosaurusspecies (P. canadensis and P. lakustai). P. perotorum shares characters with each of the previously known species that are not present in the other, including very large nasal and supraorbital bosses that are nearly in contact and separated only by a narrow groove as in P. canadensis, and a rostral comb formed by the nasals and premaxillae as in P. lakustai. P. perotorum is the youngest centrosaurine known (70–69 Ma), and the locality that produced the taxon, the Kikak−Tegoseak Quarry, is close to the highest latitude for recovery of ceratopsid remains.
Opis fizyczny
  • Perot Museum of Nature and Science, 2201 N.Field Street, Dallas, TX 75202, USA
  • Bailey, R.G. 1998. Ecoregions: the Ecosystem Geography of Oceans and Continents. 176 pp. Springer−Verlag, New York.
  • Behrensmeyer, A.K. 1975. Taphonomy and paleoecology of Plio−Pleistocene vertebrate assemblages east of Lake Rudolph, Kenya. Bulletin of the Museum of Comparative Zoology 146: 473–578.
  • Clemens, W.A. 1994. Continental vertebrates from the Late Cretaceous of the North Slope, Alaska. In: D.K. Thurston and K. Fujita (eds.), 1992 Proceedings International Conference on Arctic Margins: Outer Continental Shelf Study. Mineral Management Service 94−0040: 395–398.
  • 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.
  • Currie, P.J., Langston, W.Jr., and Tanke, D.H. 2008. A New Horned Dinosaur from an Upper Cretaceous Bone Bed in Alberta. 144 pp. NRC Research Press, Ottawa.
  • Davies, K.L. 1987. Duck−billed dinosaurs (Hadrosauridae: Ornithischia) from the North Slope of Alaska. Journal of Paleontology 61: 198–200.
  • Dodson, P. 1990. On the status of the ceratopsids Monoclonius and Centrosaurus. In: K. Carpenter and P.J. Currie (eds.), Dinosaur Systematics: Approaches and Perspectives, 231–243. Cambridge University Press, Cambridge.
  • Dodson, P., Forster, C.A., and Sampson, S.D. 2004. Ceratopsidae. In: D.B. Weishampel, P. Dodson, and H. Osmólska (eds.), The Dinosauria 2nd edition, 494–513. University of California Press, Berkeley.
  • 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 iFirst article: 8 pp.
  • Fiorillo, A.R. 2004. The dinosaurs of arctic Alaska. Scientific American 291: 84–91.
  • Fiorillo, A.R. 2008a. Cretaceous dinosaurs of Alaska: Implications for the origins 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. 2000. Theropod teeth from the Prince Creek Formation (Cretaceous) of northern Alaska, with speculations on arctic dinosaur paleoecology. Journal of Vertebrate Paleontology 20: 675–682.
  • Fiorillo, A.R. and Gangloff, R.A. 2001. The caribou migration model for Arctic hadrosaurs (Ornithischia: Dinosauria): a reassessment. Historical Biology 15: 323–334.
  • 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.
  • Fiorillo, A.R., McCarthy, P.J., Flaig, P.P., Brandlen, E., Norton, D.W., Zippi, P., Jacobs, L., and Gangloff, R.A. 2010. Paleontology and paleoenvironmental interpretation of the Kikak−Tegoseak Quarry (Prince Creek Formation: Late Cretaceous), northern Alaska: a multi−disciplinary study of a high−latitude ceratopsian dinosaur bonebed. In: M.J. Ryan, B.J. Chinnery−Allgeier, and D.A. Eberth (eds.),New Perspectives on Horned Dinosaurs, 456–477. Indiana University Press, Bloomington.
  • Flaig, P., McCarthy, P.J., and Fiorillo, A.R. 2011. A tidally−influenced, high−latitude alluvial/coastal plain: the Late Cretaceous (Maastrichtian) Prince Creek Formation, North Slope, Alaska. In: C. North, S. Davidson, and S. Leleu (eds.), From River to Rock Record: The Preservation of Fluvial Sediments and their Subsequent Interpretation. SEPM Special Publication 97: 233–264.
  • 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 and its paleogeographic implications. Journal of Paleontology 79: 997–1001.
  • Hieronymus, T.L., Witmer, L.M., Tanke, D.H., and Currie, P.J. 2009. The facial integument of centrosaurine ceratopsids: morphological and histological correlates of novel skin structures. Anatomical Record 292: 1370–1396.
  • Kirkland, J.I. and Deblieux, D.D. 2010. New basal centrosaurine ceratopsian skulls from the Wahweap Formation (Middle Campanian), Grand Staircase−Escalante National Monument, southern Utah. In: M.J. Ryan, B.J. Chinnery−Allgeier, and D.A. Eberth (eds.), New Perspective on Horned Dinosaurs, 117–140. Indiana University Press, Bloomington.
  • Langston, W. Jr. 1967. The thick−headed ceratopsian dinosaur Pachyrhinosaurus (Reptilia: Ornithischia), from the Edmonton Formation near Drumheller, Canada.Canadian Journal of Earth Sciences 4: 171–186.
  • Langston, W. Jr. 1968. A further note on Pachyrhinosaurus (Reptilia: Ceratopsia). Journal of Paleontology 42: 1303–1304.
  • Langston, W. Jr. 1975. The ceratopsian dinosaurs and associated lower vertebrates from the St. Mary River Formation (Maestrichtian) at Scabby Butte, southern Alberta. Canadian Journal of Earth Sciences 12: 1576–1608.
  • Lawver, L.A., Grantz, A., and Gahagan, L.M. 2002. Plate kinematic evolution of the present Arctic Region Since the Ordovician. In: E.L. Miller, A. Grantz, and S.L. Klemperer (eds.), Tectonic Evolution of the Bering Shelf−Chukchi Sea−Arctic Margin and Adjacent Landmasses. Geological Society of America Special Paper 360: 333–358.
  • Lawver, L.A. and Scotese, C.R. 1990. A review of tectonic models for the evolution of the Canada Basin. In: A. Grantz, L. Johnson, and J.F. Sweeney (eds.), The Arctic Ocean Region. Geological Society of America, the Geology of North America L: 593–618.
  • Lehman, T.M. 2001. Late Cretaceous dinosaur provinciality. In: D.H. Tanke and K. Carpenter (eds.), Mesozoic Vertebrate Life, 310–328. Indiana University Press, Bloomington.
  • Lomolino, M.V., Sax, D.F., and Brown, J.H. (eds.). 2004. Foundations of Biogeography: Classic Papers with Commentaries. 1291 pp. University of Chicago Press, Chicago.
  • Maddison, D.R. and Maddison, W.P. 2005. MacClade 4: Analysis of phylogeny and characterevolution. Version 4.08a.
  • McDonald, A.T. and Horner, J. R. 2010. New material of “Styracosaurus” ovatus from the Two Medicine Formation of Montana. In: M.J. Ryan, B.J. Chinnery−Allgeier, and D.A. Eberth (eds.), New Perspective on Horned Dinosaurs, 156–168. Indiana University Press, Bloomington.
  • Parrish, M.J., Parrish, J.T., Hutchinson, J.H., and Spicer, R.A. 1987. Late Cretaceous vertebrate fossils from the North Slope of Alaska and implications for dinosaur ecology. Palaios 2: 377–389.
  • Rich, T. H., Gangloff, R.A., and Hammer, W.R. 1997. Polar dinosaurs. In: P.J. Currie and K. Padian (eds.), Encyclopedia of Dinosaurs, 562–573. Academic Press, San Diego.
  • Rich, T.H., Vickers−Rich, P., and Gangloff, R.A. 2002. Polar dinosaurs. Science 295: 979–980.
  • Ryan, M.J. 2007. A new basal centrosaurine ceratopsid from the Oldman Formation, southeastern Alberta. Journal of Paleontology 81: 376–396.
  • Ryan, M.J. and Russell, A.P. 2005. A new centrosaurine ceratopsid from the Oldman Formation of Alberta and its implcations for centrosaurine taxonomy and systematics. Canadian Journal of Earth Sciences 42: 1369–1387.
  • Ryan, M.J., Russell, A.P., Eberth, D.A., and Currie, P.J. 2001. The taphonomy of a Centrosaurus (Ornithischia: Ceratopsidae) bone bed from the Dinosaur Park Formation (Upper Campanian), Alberta, Canada, with comments on cranial ontogeny. Palaios 16: 482–586.
  • Ryan, M.J., Eberth, D.A., Brinkman, D.B., Currie, P.J., and Tanke, D.H. 2010. A new Pachyrhinosaurus−like ceratopsid from the Upper Dinosaur Park Formation (Late Campanian) of southern Alberta, Canada. In: M.J. Ryan, B.J. Chinnery−Allgeier, and D.A. Eberth (eds.), New Perspective on Horned Dinosaurs, 141–155. Indiana University Press, Bloomington.
  • Sampson, S.D. 1995. Two new horned dinosaurs from the Upper Cretaceous Two Medicine Formation of Montana; with a phylogenetic analysis of the centrosaurinae (Ornithischia: Ceratopsidae). Journal of Vertebrate Paleontology 15: 743–760.
  • Sampson, S.D. and Loewen, M.A. 2010. Unraveling a radiation: a review of the diversity, stratigraphic distribution, biogeography, and evolution of horned dinosaurs (Ornithischia: Ceratopsidae). In: M.J. Ryan, B.J. Chinnery−Allgeier, and D.A. Eberth (eds.), New Perspective on Horned Dinosaurs, 405–427. Indiana University Press, Bloomington.
  • Sampson, S.D., Ryan, M.J., and Tanke, D.H. 1997. Craniofacial ontogeny in centrosaurine dinosaurs (Ornithischia: Ceratopsidae): taxonomic and behavioral implications. Zoological Journal of the Linnean Society 121: 293–337.
  • Sullivan, R.M. 2006. A taxonomic review of the Pachycephalosauridae (Dinosauria: Ornithischia). In: S.G. Lucas and R.M. Sullivan (eds.), Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35: 347–365.
  • Sternberg, C.M.1950. Pachyrhinosaurus canadensis, representing a new family of the Ceratopsia, from southern Alberta. National Museum of Canada, Bulletin 118: 109–120.
  • Swofford, D.L. 2002. PAUP*. Phylogenetic Analysis Using Parsimony (*and Other Methods). Version 4. Sinauer Associates, Sunderland, Massachusetts.
  • Walker, J.D. and Geissman, J.W. 2009. Geologic Time Scale. The Geological Society of America.
  • Witte, K.W., Stone, D.B., and Mull, C.G. 1987. Paleomagnetism, paleobotany, and paleogeography of the Cretaceous, North Slope, Alaska. In: I. Tailleur and P. Weimer (eds.), Alaska North Slope Geology, 571–579.
  • The Pacific Section, Society of Economic Paleontologists and Mineralogists and the Alaska Geological Society, Los Angeles.
Typ dokumentu
Identyfikator YADDA
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.