New data on cranial anatomy of the ceratopsian dinosaur Psittacosaurus major

• Autorzy: You H -L , Tanoue K. , Dodson P.
• Języki publikacji: EN

Abstrakty

EN

An exceptionally preserved skull and mandible of ceratopsian dinosaur Psittacosaurus major revealed many anatomical details such as the existence of an elliptical median interpremaxillary foramen, a prominent neurovascular canal on the internal wall of the beak, long, slightly divergent basipterygoid processes developed as vertical blades with a deep cleft between them, and horizontally oriented vomer. The new specimen shows two autapomorphies of Psittacosaurus major, the transversely narrow dorsal skull roof and very prominent dentary flanges, confirming the presence of two large−skulled psittacosaur species in the Lujiatun Bed of the Lower Cretaceous Yixian Formation in Beipiao City, western Liaoning Province, China, the longand narrow−skulled P. major, and broad−skulled P. lujiatunensis.

Słowa kluczowe

EN

dinosaur; Yixian Formation; Cretaceous; Dinosauria; paleontology; China; Ceratopsia; Psittacosaurus major; ceratopsian dinosaur; Liaoning; anatomy

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2008
• Tom: 53
• Numer: 2
• Opis fizyczny: p.183-196,fig.,ref.

Twórcy

autor

You H -L

• Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, Beijing 100037, P.R.China

autor

Tanoue K.

autor

Dodson P.

Bibliografia

• Averianov, A.O., Voronkevich, A.V., Leshchinskiy, S.V., and Fayngertz, A.V. 2006. A ceratopsian dinosaur Psittacosaurus sibiricus from the Early Cretaceous of West Siberia, Russia and its phylogenetic relationships. Journal of Systematic Palaeontology 4: 359–395.
• Brown, B. and Schlaikjer, E.M. 1940. The structure and relationships of Protoceratops.Annals of the New York Academy of Sciences 40: 133–266.
• Cheng, Z.−W. 1982. Reptilia. In: Bureau of Geology of Inner Mongolian Autonomous Region (ed.), The Mesozoic Stratigraphy and Paleontology of the Guyang Coal−bearing Basin, 123–136. Geological Publishing House, Beijing.
• Dodson, P. 1990. Counting dinosaurs: how many kinds were there? Proceedings of the National Academy of Sciences of the United States of America 87: 7608–7612.
• Dodson, P. and Currie, P.J. 1990. Neoceratopsia. In: D.B. Weishampel, P. Dodson, and H. Osmólska (eds.), The Dinosauria, 593–618. University of California, Berkeley.
• Godfrey, S.J. and Holmes, R. 1995. Cranial morphology and systematics of Chasmosaurus(Dinosauria: Cerotopsidae) from the Upper Cretaceous of western Canada. Journal of Vertebrate Paleontology 15: 726–742.
• Goloboff, P.A., Farris, J.S., and Nixon, K.C. 2007. T.N.T.: Tree Analysis Using New Technology, Version 1.1. Willi Hennig Society Edition, Washington D.C.
• Leschinskiy, S.V., Fainherts, A.V., Voronkevich, A.V., Maschenko, E.N., and Averianov., A.O. 2000. Preliminary results of the investigation of the Shestakovo localities of Early Cretaceous vertebrates. In: A.V. Komarov (ed.), Material of the Regional Conference of the Geologists of Siberia, Far East and North East Russia, Volume 2, 363–366. Gala Press, Tomsk.
• Lü, J.−C., Kobayashi, Y., Lee, Y.−N., and Ji, Q. 2007. A new Psittacosaurus (Dinosauria: Ceratopsia) specimen from the Yixian Formation of western Liaoning, China: the first pathological psittacosaurids. Cretaceous Research 28: 272–276.
• Lucas, S.G. 2006. The Psittacosaurus biochron, Early Cretaceous of Asia. Cretaceous Research 27: 189–198.
• Maryańska, T. and Osmólska, H. 1975. Protoceratopsidae (Dinosauria) of Asia. Palaeontologia Polonica 33: 133–182.
• Meng, Q., Liu, J.−Y., Varricchio, D.J., Huang, T., and Gao, C.−L. 2004. Parental care in an ornithischian dinosaur. Nature 431: 145.
• Osborn, H.F. 1923. Two Lower Cretaceous dinosaurs from Mongolia. American Museum Novitates 95: 1–10.
• Osmólska, H. 1986. Structure of nasal and oral cavities in the protoceratopsid dinosaurs (Ceratopsia, Ornithischia). Acta Palaeontologica Polonica 31: 145–157.
• Romer, A.S. 1956. The Osteology of Reptiles. 772 pp. University of Chicago Press (reprinted 1997 by Krieger Publishing Company, Malabar, Florida), Chicago.
• Russell, D.A. and Zhao, X.J. 1996. New psittacosaur occurrences in Inner Mongolia. Canadian Journal of Earth Sciences 33: 637–648.
• Sereno, P.C. 1987. The Ornithischian Dinosaur Psittacosaurus from the Lower Cretaceous of Asia and the Relationships of the Ceratopsia. 554 pp. Columbia University, New York.
• Sereno, P.C. 1990a. Psittacosauridae. In: D.B. Weishampel, P. Dodson, and H. Osmólska (eds.), The Dinosauria, 579–592. University of California Press, Berkeley.
• Sereno, P.C. 1990b. New data on parrot−beaked dinosaurs (Psittacosaurus). In: K. Carpenter and P.J. Currie (eds.), Dinosaur Systematics: Perspectives and Approaches, 203–210. Cambridge University Press, Cambridge.
• Sereno, P.C. 2000. The fossil record, systematics and evolution of pachycephalosaurs and ceratopsians from Asia.In: M.J. Benton, M.A. Shishkin, D.M. Unwin, and E.N. Kurochkin (eds.), The Age of Dinosaurs in Russia and Mongolia, 480–516. Cambridge University Press, Cambridge.
• Sereno, P.C. and Chao, S. 1988. Psittacosaurus xinjiangensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northwestern China. Journal of Vertebrate Paleontology 8: 353–365.
• Sereno, P.C., Chao, S., Cheng, Z., and Rao, C. 1988. Psittacosaurus meileyingensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northeastern China. Journal of Vertebrate Paleontology 8: 366–377.
• Sereno, P.C., Zhao, X.−J., Brown, L., and Tan, L. 2007. New psittacosaurid highlights skull enlargement in horned dinosaurs. Acta Palaeontologica Polonica 52: 275–284.
• Xu, X. 1997. A new psittacosaur (Psittacosaurus mazongshanensis sp. nov.) from Mazongshan area, Gansu Province, China. In: Z. Dong (ed.), Sino−Japanese Silk Road Dinosaur Expedition, 48–67. China Ocean Press, Beijing.
• Xu, X. and Wang, X.−L. 1998. New psittacosaur (Ornithischia, Ceratopsia) occurrence from the Yixian Formation of Liaoning, China and its stratigraphical significance. Vertebrata PalAsiatica 36: 147–158.
• You, H.−L. and Dodson, P. 2003. Redescription of neoceratopsian dinosaur Archaeoceratops and early evolution of Neoceratopsia. Acta Palaeontologica Polonica, 48: 261–272.
• You, H.−L. and Xu, X. 2005. An adult specimen of Hongshanosaurus houi (Dinosauria: Psittacosauridae) from the Lower Cretaceous of Western Liaoning Province, China. Acta Geologica Sinica (English Edition) 79: 168–173.
• You, H.−L., Li, D.−Q., Ji, Q., Lamanna, M.C., and Dodson, P. 2005. On a new genus of basal neoceratopsian dinosaur from the Early Cretaceous of Gansu Province, China. Acta Geologica Sinica (English Edition) 79: 593–597.
• Young, C.C. 1931. On some new dinosaurs from western Suiyuan. Inner Mongolia. Bulletin of Geological Survey China 1931 (2): 159–166.
• Young, C.C. 1958. The dinosaurian remains of Laiyang, Shantung. Palaeontologia Sinica Series C 16: 1–138.
• Zhao, X.−J. 1962. The new species of Psittacosaurusfrom Shantung, China. Vertebrata PalAsiatica 6: 349–360.
• Zhou, C.−F., Gao, K.−Q., Fox, R.C., and Chen, S.−H. 2006. A new species of Psittacosaurus (Dinosauria: Ceratopsia) from Early Cretaceous Yixian Formation, Liaoning, China. Palaeoworld 15: 100–114.