Psittacosaurus

Psittacosaurus; Fosilă: Cretacic inferior, 123.2–100 mln. ani în urmă PreЄ Є O S D C P T J K Pg N
Clasificare științifică
Regn:	Animalia
Încrengătură:	Chordata
Clasă:	Sauropsida
Supraordin:	Dinosauria
Ordin:	Ornithischia
Subordin:	Neornithischia
Infraordin:	Ceratopsia
Familie:	Psittacosauridae
Gen:	Psittacosaurus; Osborn, 1923
Specii
	Specii de Psittacosaurus P. mongoliensis (specia tip); Osborn, 1923; P. sinensis; Young, 1958; P. meileyingensis; Sereno et al., 1988; P. xinjiangensis; Sereno y Zhao, 1988 ?P. sattayaraki; Buffetaut y Suteethorn, 1992; P. neimongoliensis; Russell y Zhao, 1996; P. ordosensis; Russell y Zhao, 1996; P. mazongshanensis; Xu, 1997; P. sibiricus; Leshchinskiy et al., 2000; P. houi; You, Xu, & Wang, 2003; P. lujiatunensis; Zhou et al., 2006; P. major; Sereno et al., 2007; P. gobiensis; Sereno, Zhao y Lin, 2009;
Sinonime
	Protiguanodon Osborn, 1923; Luanpingosaurus Cheng vide Chen, 1996 Hongshanosaurus You, Xu, & Wang, 2003;
	Modifică text

Psittacosaurus este un gen de dinozaur ceratopsian. Nu era un dinozaur mare, având maxim 2 m lungime. Deși era un ceratposian, nu avea coarne. Numele lui se poate traduce prin „șopârla papagal”. Ciocul lui ascundea treizeci și cinci de coloane de dinți, așezați unul peste celălalt.

Specii[modificare | modificare sursă]

Specii valide de Psittacosaurus[modificare | modificare sursă]

P. mongoliensis^[2] — Mongolia, până la nordul Chinei
P. sinensis^[3] — nord-estul Chinei
P. meileyingensis^[4] — nord-centrul Chinei
P. xinjiangensis^[5] — nord-estul Chinei
P. neimongoliensis^[6] — nord-centrul Chinei
P. ordosensis^[6] — nord-centrul Chinei
P. mazongshanensis^[7] — nord-estul Chinei
P. sibiricus^[8] — Rusia (la sud de Siberia)
P. lujiatunensis^[9] — nord-estul Chinei
P. major^[10] — nord-estul Chinei
P. gobiensis — Mongolia interioară
P. houi — nord-estul Chinei

Specii probabile de Psittacosaurus[modificare | modificare sursă]

P. sattayaraki^[11]^[12] — Thailanda

Filogenie[modificare | modificare sursă]

Psittacosaurus

	P. sibiricus

	P. sinensis

P. neimongolensis

P. ordosensis

	Psittacosaurus

	P. mazongshanensis

	P. meileyingensis

	P. mongoliensis

	P. xinjiangensis

Clasificare[modificare | modificare sursă]

Yinlong

	Xuanhuaceratops

	Chaoyangsaurus

Psittacosaurus

	P. sinensis

	P. mongoliensis

Neoceratopsia

Liaoceratops

Aquilops

	Auroraceratops

	Yamaceratops

	Helioceratops

	Archaeoceratops

Koreaceratops

	Leptoceratopsidae

	Coronosauria

Referințe[modificare | modificare sursă]

^ Wang, X.-L.; Wang, Y.-Q.; Zhang, F.-Ch.; Zhang, J.-Y., Zhou, Z.-H.; Jin, F.; Hu, Y.-M.; Gu, G. y Zhang, H.Ch. (2000). „Vertebrate biostratigraphy of the Lower Cretaceous Yixian Formation in Lingyuan, western Liaoning and its neighboring southern Nei Mongol (Inner Mongolia), China” (PDF). Vertebrata PalAsiatica (în chineză și engleză). 38 (2): 81–99. Accesat în 26 februarie 2011.
^ Sereno, P.C. 1990. New data on parrot-beaked dinosaurs (Psittacosaurus). In: Carpenter, K. & Currie, P.J. (Eds.). Dinosaur Systematics: Perspectives and Approaches. Cambridge: Cambridge University Press. Pp. 203-210.
^ Young, C.C. 1958. The dinosaur remains of Laiyang, Shantung. Palaeontologia Sinica Series C 16: 53-159.
^ Sereno, Paul C.; Xijin, Zhao; Zhengwu, Chang; Chenggang, Rao (1988). „Psittacosaurus meileyingensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northeastern China”. Journal of Vertebrate Paleontology. 8: 366–377. doi:10.1080/02724634.1988.10011725.
^ Sereno, P.C. & Zhao X. 1988. Psittacosaurus xinjiangensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northwestern China. Journal of Vertebrate Paleontology 8: 353-365.
^ ^a ^b Russell, D.A. & Zhao X. 1996. New psittacosaur occurrences in Inner Mongolia. Canadian Journal of Earth Sciences 33: 637-648.
^ Xu X. 1997. A new psittacosaur (Psittacosaurus mazongshanensis sp. nov.) from Mazongshan area, Gansu Province, China. In: Dong Z. (Ed.). Sino-Japanese Silk Road Dinosaur Expedition. Beijing: China Ocean Press. Pp. 48-67.
^ Leshchinskiy, S.V., Fayngertz, A.V., Voronkevich, A.V., Maschenko, E.N. & Averianov, A.O. 2000. Preliminary results of the investigation of the Shestakovo localities of Early Cretaceous vertebrates. In: Komarov, A.V. (Ed.). Materials of the Regional Conference of the Geologists of Siberia, Far East and North East of Russia. Tomsk: GalaPress. Pp. 363–366. [In Russian]
^ Zhou, C-F., Gao, K-Q., Fox, R.C., and Chen, S-H. 2006. "A New Species of Psittacosaurus (Dinosauria: Ceratopsia) from the Early Cretaceous Yixian Formation, Liaoning, China." Palaeoworld 15: 100-114.
^ Sereno, P.C.; Zhao, X.; Brown, L.; Tan, L. (2007). „New psittacosaurid highlights skull enlargement in horned dinosaurs” (PDF). Acta Palaeontologica Polonica. 52 (2): 275–284.
^ Buffetaut, E. & Suteethorn, V. 1992. A new species of the ornithischian dinosaur Psittacosaurus from the Early Cretaceous of Thailand. Palaeontology 35: 801-812.
^ Buffetaut, E. & Suteethorn, V. 2002. Remarks on Psittacosaurus sattayaraki Buffetaut & Suteethorn, 1992, a ceratopsian dinosaur from the Lower Cretaceous of Thailand. Oryctos 4: 71-73.

Lectură suplimentară[modificare | modificare sursă]

You H., Xu X. & Wang X. 2003. A new genus of Psittacosauridae (Dinosauria: Ornithopoda) and the origin and early evolution of marginocephalian dinosaurs. Acta Geológica Sinica (English edition) 77(1): 15–20.
You H. & Dodson, P. 2004. Basal Ceratopsia. In: Weishampel, D.B., Dodson, P., & Osmolska, H. (Eds.). The Dinosauria (2nd Edition). Berkeley: University of California Press. Pp. 478-493.
You H. & Xu X. 2005. An adult specimen of Hongshanosaurus houi (Dinosauria: Psittacosauridae) from the Lower Cretaceous of Western Liaoning Province, China. Acta Geológica Sinica (English edition) 79(2): 168-173

Legături externe[modificare | modificare sursă]

Commons

Wikimedia Commons conține materiale multimedia legate de Psittacosaurus

Wikispecies

Wikispecies conține informații legate de Psittacosaurus

Resumen de todos los ceratop (s) ianos conocidos Arhivat în 3 septembrie 2007, la Wayback Machine. en la página web de Justin S. Tweet's Thescelosaurus! Arhivat în 25 aprilie 2007, la Wayback Machine.. en
Resumen de un artículo publicado Arhivat în 27 septembrie 2006, la Wayback Machine. en la conferencia EAVP del 2004, en el que se mencionan los restos del Psittacosaurus en Siberia (en formato PDF y en inglés)
Psittacosaurus en The Natural History Museum's Dino Directory Arhivat în 17 februarie 2009, la Wayback Machine. en
Datos y fotografías del esqueleto del Psittacosaurus en gondwanastudios.com en
Sobre el Psittacosaurus en Enchanted Learning en

[wangetal2000-1] Wang, X.-L.; Wang, Y.-Q.; Zhang, F.-Ch.; Zhang, J.-Y., Zhou, Z.-H.; Jin, F.; Hu, Y.-M.; Gu, G. y Zhang, H.Ch. (2000). „Vertebrate biostratigraphy of the Lower Cretaceous Yixian Formation in Lingyuan, western Liaoning and its neighboring southern Nei Mongol (Inner Mongolia), China” (PDF). Vertebrata PalAsiatica (în chineză și engleză). 38 (2): 81–99. Accesat în 26 februarie 2011.

[sereno90-2] Sereno, P.C. 1990. New data on parrot-beaked dinosaurs (Psittacosaurus). In: Carpenter, K. & Currie, P.J. (Eds.). Dinosaur Systematics: Perspectives and Approaches. Cambridge: Cambridge University Press. Pp. 203-210.

[young58-3] Young, C.C. 1958. The dinosaur remains of Laiyang, Shantung. Palaeontologia Sinica Series C 16: 53-159.

[serenoetal1988-4] Sereno, Paul C.; Xijin, Zhao; Zhengwu, Chang; Chenggang, Rao (1988). „Psittacosaurus meileyingensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northeastern China”. Journal of Vertebrate Paleontology. 8: 366–377. doi:10.1080/02724634.1988.10011725.

[serenozhao1988-5] Sereno, P.C. & Zhao X. 1988. Psittacosaurus xinjiangensis (Ornithischia: Ceratopsia), a new psittacosaur from the Lower Cretaceous of northwestern China. Journal of Vertebrate Paleontology 8: 353-365.

[russellzhao96-6] Russell, D.A. & Zhao X. 1996. New psittacosaur occurrences in Inner Mongolia. Canadian Journal of Earth Sciences 33: 637-648.

[xu97-7] Xu X. 1997. A new psittacosaur (Psittacosaurus mazongshanensis sp. nov.) from Mazongshan area, Gansu Province, China. In: Dong Z. (Ed.). Sino-Japanese Silk Road Dinosaur Expedition. Beijing: China Ocean Press. Pp. 48-67.

[lexhchinskiyetal2000-8] Leshchinskiy, S.V., Fayngertz, A.V., Voronkevich, A.V., Maschenko, E.N. & Averianov, A.O. 2000. Preliminary results of the investigation of the Shestakovo localities of Early Cretaceous vertebrates. In: Komarov, A.V. (Ed.). Materials of the Regional Conference of the Geologists of Siberia, Far East and North East of Russia. Tomsk: GalaPress. Pp. 363–366. [In Russian]

[ref_duplicada_1-9] Zhou, C-F., Gao, K-Q., Fox, R.C., and Chen, S-H. 2006. "A New Species of Psittacosaurus (Dinosauria: Ceratopsia) from the Early Cretaceous Yixian Formation, Liaoning, China." Palaeoworld 15: 100-114.

[serenoetal2007-10] Sereno, P.C.; Zhao, X.; Brown, L.; Tan, L. (2007). „New psittacosaurid highlights skull enlargement in horned dinosaurs” (PDF). Acta Palaeontologica Polonica. 52 (2): 275–284.

[buffetaut92-11] Buffetaut, E. & Suteethorn, V. 1992. A new species of the ornithischian dinosaur Psittacosaurus from the Early Cretaceous of Thailand. Palaeontology 35: 801-812.

[buffetaut02-12] Buffetaut, E. & Suteethorn, V. 2002. Remarks on Psittacosaurus sattayaraki Buffetaut & Suteethorn, 1992, a ceratopsian dinosaur from the Lower Cretaceous of Thailand. Oryctos 4: 71-73.

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