The year 2009 in Archosaur paleontology was eventful. Archosaurs include the only living dinosaur group — birds — and the reptile crocodilians, plus all extinct dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosaur paleontology is the scientific study of those animals, especially as they existed before the Holocene Epoch began about 11,700 years ago. The year 2009 in paleontology included various significant developments regarding archosaurs.
This article records new taxa of fossilarchosaurs of every kind that have been described during the year 2009, as well as other significant discoveries and events related to paleontology of archosaurs that occurred in the year 2009.
A new study on theropod furculae is published.[16]
A "detailed description of the skull and mandible of the Chinese cerapodan ornithischian dinosaur Jeholosaurus shangyuanensis" is published.[17]
Knoll, F.; Padian, K.; de Ricqles, A. (2009). "Ontogenetic change and adult body size of the early ornithischian dinosaur Lesothosaurus diagnosticus: Implications for basal ornithischian taxonomy". Gondwana Research. 17: 171–179. doi:10.1016/j.gr.2009.03.010.
Williamson, T. E.; Carr, T. D.; Williams, S. A.; Tremaine, K. (2009). "Early ontogeny of pachycephalosaurine squamosals as revealed by juvenile specimens from the Hell Creek Formation, eastern Montana". Journal of Vertebrate Paleontology. 29 (1): 291–294. Bibcode:2009JVPal..29..291W. doi:10.1671/039.029.0111. S2CID84516840.
Bittencourt, J.S.; Kellner, A.W.A. (2009). "The anatomy and phylogenetic position of the Triassic dinosaur Staurikosaurus pricei Colbert, 1970". Zootaxa. 2079: 1–56. doi:10.11646/zootaxa.2079.1.1. S2CID90574494.
Chin, K.; Hartman, J.H.; Roth, B. (2009). "Opportunistic exploitation of dinosaur dung: fossil snails in coprolites from the Upper Cretaceous Two Medicine Formation of Montana". Lethaia. 42 (2): 185–198. doi:10.1111/j.1502-3931.2008.00131.x.
Maidment, S.C.R.; Porro, L.B. (2009). "Homology of the palpebral and origin of supraorbital ossifications in ornithischian dinosaurs". Lethaia. 43: 95–111. doi:10.1111/j.1502-3931.2009.00172.x.
Gates, T.A.; Farke, A.A. (2009). "Biostratigraphic and biogeographic implications of a hadrosaurid (Ornithopoda: Dinosauria) from the Upper Cretaceous Almond Formation of Wyoming, USA". Cretaceous Research. 30 (5): 1157–1163. Bibcode:2009CrRes..30.1157G. doi:10.1016/j.cretres.2009.05.001.
The study found hadrosaurs had a unique way of eating unlike any creature living today. In contrast to a flexible lower jaw joint prevalent in today's mammals, hadrosaurs had a unique hinge between the upper jaws and the rest of its skull. The team found the dinosaur's upper jaws pushed outwards and sideways while chewing, as the lower jaw slid against the upper teeth.
The study also concluded that hadrosaurs likely grazed on horsetails and vegetation close to the ground, rather than browsing higher-growing leaves and twigs. However, Purnell said these conclusions were less secure than the more conclusive evidence regarding the motion of teeth while chewing. Previous studies found contradictory conclusions, and the issue remains a subject of debate.
The findings were published on June 30, 2009 in the journal, The Proceedings of the National Academy of Sciences. Purnell said no previous study had ever employed this method of analyzing microscopic teeth scratches, and that the method could be used to study other areas of scientific research.
New taxa
Data courtesy of George Olshevky's dinosaur genera list.[18] ~44 dinosaur genera were erected in 2009.
Bell, A.; Everhart, M.J. (2009). "A new specimen of Parahesperornis (Aves: Hesperornithiformes) from the Smoky Hill Chalk (Early Campanian) of western Kansas". Transactions of the Kansas Academy of Science. 112 (1/2): 7–14. doi:10.1660/062.112.0202. S2CID86083098.
Originally described as a member of Scolopacidae belonging to the genus Calidris;[61] Zelenkov, Volkova and Gorobets (2016) reinterpreted it as a member of Turnicidae and transferred it to the genus Ortyxelos.[62]
Federico L. Agnolin, 2009, made it the type species of the separate genus Noriegavis Agnolin, 2009.[65] Originally interpreted as a seriema; Noriega & Mayr (2017) reinterpreted it as a member of the falconid genus Thegornis of uncertain specific assignment, on the basis of a reexamination of the holotype specimen.[66]
Originally described as a member of Ardeidae and a species of Egretta; however, Zelenkov (2017) considered this species to be a junior synonym of the barn-owl species Tyto campiterrae Jánossy (1991).[72]
Lü, J. (2009). "A new non-pterodactyloid pterosaur from Qinglong County, Hebei Province of China". Acta Geologica Sinica (English Edition). 83 (2): 189–199. doi:10.1111/j.1755-6724.2009.00062.x. S2CID247739978.
^Sereno, R. N. Martinez, J. A. Wilson, Varricchio, Alcober.
^Xu X., Zhao Q., Norell, C. Sullivan, Hone, Erickson, Wang X. L., Han F., Guo.
^Xabier Pereda-Suberbiolaa, José Ignacio Canudob, Penélope Cruzado-Caballerob, José Luis Barcoc, Nieves López-Martínezd, Oriol Omse, José Ignacio Ruiz-Omeñaca.
^Marinho, T.S.; Carvalho, I.S. (2009). "An armadillo-like sphagesaurid crocodyliform from the Late Cretaceous of Brazil". Journal of South American Earth Sciences. 27 (1): 36–41. Bibcode:2009JSAES..27...36M. doi:10.1016/j.jsames.2008.11.005.
^Juan Martín Leardi; Diego Pol (2009). "The first crocodyliform from the Chubut Group (Chubut Province, Argentina) and its phylogenetic position within basal Mesoeucrocodylia". Cretaceous Research. 30 (6): 1376–1386. Bibcode:2009CrRes..30.1376L. doi:10.1016/j.cretres.2009.08.002. hdl:11336/90736.
^Kellner, A.W.A.; Pinheiro, A.E.P.; Azevedo, S.A.K.; Henriques, D.D.R.; de Carvalho, L.B.; Oliveira, G.R. (2009). "A new crocodyliform from the Alcântara Formation (Cenomanian), Cajual Island, Brazil". Zootaxa. 2030: 49–58. doi:10.11646/zootaxa.2030.1.4.
^Santiago, L.A.; and Andrés, L.A. (2009). "Nuevo género de Crocodylia del Eoceno medio de la Península Ibérica (Zamora, España): Duerosuchus piscator nov. gen., nov. sp". Studia Geologica Salmanticensia. 45 (2): 149–173.
^Butler, R.J.; Barrett, P.M.; Abel, R.L.; Gower, D.J. (2009). "A Possible Ctenosauriscid Archosaur from the Middle Triassic Manda Beds of Tanzania". Journal of Vertebrate Paleontology. 29 (4): 1022–1031. Bibcode:2009JVPal..29.1022B. doi:10.1671/039.029.0404. S2CID86267617.
^ abCau, Andrea; Maganuco, Simone (2009). "A new theropod dinosaur, represented by a single unusual caudal vertebra from the Kem Kem Beds (Cretaceous) of Morocco". Atti Soc. It. Sci. Nat. Museo Civ. Stor. Nat. Milano. 150 (II): 239–257.
^Lio, G., Agnolin, F., Cau, A. and Maganuco, S. (2012). "Crocodyliform affinities for Kemkemia auditorei Cau and Maganuco, 2009, from the Late Cretaceous of Morocco." Atti della Società Italiana di Scienze Naturali e del Museo di Storia Naturale di Milano, 153 (I), s. 119–126.
^Lauprasert, K.; Cuny, G.; Thirakhupt, K. and Suteethorn, V. 2009. Khoratosuchus jintasakuli gen. et sp. nov., an advanced neosuchian crocodyliform from the Early Cretaceous (Aptian-Albian) of NE Thailand. In E. Buffetaut, G. Cuny, J. Le Loeuff, V. Suteethorn (eds.), Late Palaeozoic and Mesozoic Ecosystems in SE Asia. The Geological Society of London, Special Publication 315:175-187.
^Erin L. Rasmusson Simons; Gregory A. Buckley (2009). "New Material of "Trematochampsa" Oblita (Crocodyliformes, Trematochampsidae) from the Late Cretaceous of Madagascar". Journal of Vertebrate Paleontology. 29 (2): 599–604. Bibcode:2009JVPal..29..599R. doi:10.1671/039.029.0224. S2CID140171041.
^Novas, F. E.; Pais, D. F.; Pol, D.; Carvalho, I. D. S.; Mones, A.; Scanferla, A.; Riglos, M. S. (2009). "Bizarre notosuchian crocodyliform with associated eggs from the Upper Cretaceous of Bolivia". Journal of Vertebrate Paleontology. 29 (4): 1316–1320. Bibcode:2009JVPal..29.1316N. doi:10.1671/039.029.0409. hdl:11336/54001. S2CID140589478.
^Nesbitt, S.J.; Turner, A.H.; Spaulding, M.; Conrad, J.L.; Norell, M.A. (2009). "The theropod furcula". Journal of Morphology. 270 (7): 856–879. doi:10.1002/jmor.10724. PMID19206153. S2CID11847975.
^Barrett, P.M.; Han, F.-L. (2009). "Cranial anatomy of Jeholosaurus shangyuanensis (Dinosauria: Ornithischia) from the Early Cretaceous of China". Zootaxa. 2072: 31–55. doi:10.11646/zootaxa.2072.1.2.
^Martínez, Ricardo N. (2009). "Adeopapposaurus mognai, gen. et sp. nov (Dinosauria: Sauropodomorpha), with comments on adaptations of basal sauropodomorpha". Journal of Vertebrate Paleontology. 29 (1): 142–164. Bibcode:2009JVPal..29..142M. doi:10.1671/039.029.0102. S2CID85074392.
^Longrich, Nicholas R.; Currie, Philip J. (2009). "Albertonykus borealis, a new alvarezsaur (Dinosauria: Theropoda) from the Early Maastrichtian of Alberta, Canada: Implications for the systematics and ecology of the Alvarezsauridae". Cretaceous Research. 30 (1): 239–252. Bibcode:2009CrRes..30..239L. doi:10.1016/j.cretres.2008.07.005.
^Xu, X., Zhao, Q., Norell, M., Sullivan, C., Hone, D., Erickson, G., Wang, X., Han, F. and Guo, Y. (2009). "A new feathered maniraptoran dinosaur fossil that fills a morphological gap in avian origin." Chinese Science Bulletin, six pages, accepted November 15, 2008.
^Wagner, J.R.; Lehman, T.M. (2009). "An Enigmatic New Lambeosaurine Hadrosaur (Reptilia: Dinosauria) from the Upper Shale Member of the Campanian Aguja Formation of Trans-Pecos Texas". Journal of Vertebrate Paleontology. 29 (2): 605–611. Bibcode:2009JVPal..29..605W. doi:10.1671/039.029.0208. S2CID128555861.
^Molnar, Ralph E.; Flannery, Timothy F.; Rich, Thomas H.V. (1981). "An allosaurid theropod dinosaur from the Early Cretaceous of Victoria, Australia". Alcheringa. 5 (2): 141–146. Bibcode:1981Alch....5..141M. doi:10.1080/03115518108565427.
^Zhang, X.; Lü, J.; Xu, L.; Li, J.; Yang, L.K.; Hu, W.; Jia, S.; Ji, Q.; Zhang, C. (2009). "A new sauropod dinosaur from the Late Cretaceous Gaogou Formation of Nanyang, Henan Province". Acta Geologica Sinica (English Edition). 83 (2): 212–221. doi:10.1111/j.1755-6724.2009.00032.x. S2CID129422997.
^Salgado, L.; Coria, R. A. (2009). "Barrosasaurus casamiquelai gen. et sp. nov., a new titanosaur (Dinosauria, Sauropoda) from the Anacleto Formation (Late Cretaceous: early Campanian) of Sierra Barrosa (Neuquén, Argentina)". Zootaxa. 2222: 1–16. doi:10.11646/zootaxa.2222.1.1.
^Alifanov, V.R.; Barsbold, R. (2009). "Ceratonykus oculatus gen. et sp. nov., a new dinosaur (?Theropoda, Alvarezsauria) from the Late Cretaceous of Mongolia" (in English)". Paleontological Journal. 43 (1): 86–99. doi:10.1134/S0031030109010109. S2CID129589208.
^Jin, L.; Chen, J.; Zan, S.; Godefroit, P. (2009). "A new basal neoceratopsian dinosaur from the Middle Cretaceous of Jilin Province, China". Acta Geologica Sinica (English Edition). 83 (2): 200–206. doi:10.1111/j.1755-6724.2009.00023.x. S2CID129656123.
^Longrich, N.R. and Currie, P.J. (2009). "A microraptorine (Dinosauria–Dromaeosauridae) from the Late Cretaceous of North America." Proceedings of the National Academy of Sciences, 106(13) .
^ abYou, H.-L.; Li, D.-Q.; Li, Da-Qing (2009). "A new basal hadrosauriform dinosaur (Ornithischia: Iguanodontia) from the Early Cretaceous of northwestern China". Canadian Journal of Earth Sciences. 46 (12): 949–957. Bibcode:2009CaJES..46..949Y. doi:10.1139/E09-067.
^Buffetaut, E., Suteethorn, V. and Tong, H. (2009). "An early 'ostrich dinosaur' (Theropoda: Ornithomimosauria) from the Early Cretaceous Sao Khua Formation of NE Thailand", pp. 229-243 IN E. Buffetaut, G. Cuny, J. Le Loeuff & V. Suteethorn (eds.), Late Palaeozoic and Mesozoic Ecosystems in SE AsiaGeological Society, London, Special Publications 315: 229-243. doi:10.1144/SP315.16
^F. Li; Peng G.; Ye Y.; Jiang S.; and Huang, D. (2009). "A new carnosaur from the Late Jurassic of Qianwei, Sichuan, China". Acta Geologica Sinica 83(9): 1203–1213. AbstractArchived 2020-11-06 at the Wayback Machine.
^ abLü; Xu, L.; Jiang, X.; Jia, S.; Li, M.; Yuan, C.; Zhang, X.; Ji, Q. (2009). "A preliminary report on the new dinosaurian fauna from the Cretaceous of the Ruyang Basin, Henan Province of central China". Journal of the Paleontological Society of Korea. 25: 43–56.
^González Riga, B. J.; Previtera, E.; Pirrone, C.A. (2009). "Malarguesaurus florenciae gen. et sp. nov., a new titanosauriform (Dinosauria, Sauropoda) from the Upper Cretaceous of Mendoza, Argentina". Cretaceous Research. 30 (1): 135–148. Bibcode:2009CrRes..30..135G. doi:10.1016/j.cretres.2008.06.006.
^Lu, J; Xu, L; Jia, S; Zhang, X; Zhang, J; Yang, L; You, H; Ji, Q (2009). "A new gigantic sauropod dinosaur from the Cretaceous of Ruyang, Henan, China". Geological Bulletin of China. 28 (1).
^Wu X.; Currie, P.J.; Dong Z.; Pan S.; Tang W. (2009). "A New Theropod Dinosaur from the Middle Jurassic of Lufeng, Yunnan, China". Acta Geologica Sinica. 83 (1): 9–24. doi:10.1111/j.1755-6724.2009.00002.x. S2CID140695367.
^Ji, Q.; Ji, S.-A.; Zhang, L.-J. (2009). "First large tyrannosauroid theropod from the Early Cretaceous Jehol Biota in northeastern China". Geological Bulletin of China. 28 (10): 1369–1374.
^Parsons, W.L.; Parsons, K.M.; Parsons, Kristen M. (2009). "A new ankylosaur (Dinosauria: Ankylosauria) from the Lower Cretaceous Cloverly Formation of central Montana". Canadian Journal of Earth Sciences. 46 (10): 721–738. Bibcode:2009CaJES..46..721S. doi:10.1139/E09-045.
^Dalla Vecchia, F. M. (2009). "Tethyshadros insularis, a new hadrosauroid dinosaur (Ornithischia) from the Upper Cretaceous of Italy". Journal of Vertebrate Paleontology. 29 (4): 1100–1116. Bibcode:2009JVPal..29.1100D. doi:10.1671/039.029.0428. S2CID198128196.
^Nikita V. Zelenkov; Natalia V. Volkova; Leonid V. Gorobets (2016). "Late Miocene buttonquails (Charadriiformes, Turnicidae) from the temperate zone of Eurasia". Journal of Ornithology. 157 (1): 85–92. doi:10.1007/s10336-015-1251-0. S2CID14951696.
^Storrs L. Olson (2009). "A New Diminutive Species of Shearwater of the Genus Calonectris (Aves: Procellariidae) from the Middle Miocene Calvert Formation of Chesapeake Bay". Proceedings of the Biological Society of Washington. 122 (4): 466–470. doi:10.2988/09-19.1. S2CID86663993.
^Jorge I. Noriega; Sergio F. Vizcaino; Susana Bargo (2009). "First Record and a New Species of Seriema (Aves: Ralliformes: Cariamidae) from Santacrucian (Early-Middle Miocene) Beds of Patagonia". Journal of Vertebrate Paleontology. 29 (2): 620–626. Bibcode:2009JVPal..29..620N. doi:10.1671/039.029.0216. hdl:11336/80002. S2CID86428640.
^Jorge I. Noriega; Gerald Mayr (2017). "The systematic affinities of the putative seriema Noriegavis santacrucensis (Noriega et al., 2009) from the Miocene of Argentina". Contribuciones del Museo Argentino de Ciencias Naturales. 7: 133–139.
^Zhang Zuhui; Gao Chunling; Meng Qingjin; Liu Jinyuan; Hou Lianhai; Zheng Guangmei (2009). "Diversification in an Early Cretaceous Avian Genus: Evidence from a New Species of Confuciusornis from China". Journal of Ornithology. 150 (4): 783–790. doi:10.1007/s10336-009-0399-x. S2CID21418230.
^Min Wang; Jingmai O'Connor; Zhong-He Zhou (2018). "A taxonomical revision of the Confuciusornithiformes (Aves: Pygostylia)". Vertebrata PalAsiatica. in press. doi:10.19615/j.cnki.1000-3118.180530.
^Jenö Kessler; János Hír (2009). "A New Anserid Species from the Neogene of Hungary". Fragmenta Palaeontologica Hungarica. 27 (2): 97–101.
^Jenö Kessler (2009). "The Oldest Modern Bird (Ornithurinae) Remains from the Early Oligocene of Hungary". Fragmenta Palaeontologica Hungarica. 27 (2): 93–96.
^ abN. V. Zelenkov (2017). "Revision of non-passeriform birds from Polgárdi (Hungary, Upper Miocene): 3. Neoaves". Paleontological Journal. 51 (2): 203–213. doi:10.1134/S0031030117020162. S2CID90314539.
^Julia A. Clarke; Daniel T. Ksepka; N. Adam Smith; Mark A. Norell (2009). "Combined Phylogenetic Analysis of a New North American Fossil Species Confirms Widespread Eocene Distribution for Stem Rollers (Aves, Coracii)". Zoological Journal of the Linnean Society. 157 (3): 586–611. doi:10.1111/zoj.12181.
^Eric M. Morschhauser; David J. Varricchio; Gao Chunling; Liu Jinyuan; Wang Xuri; Cheng Xiadong; Meng Qingjin (2009). "Anatomy of the Early Cretaceous bird Rapaxavis pani, a new species from Liaoning Province, China". Journal of Vertebrate Paleontology. 29 (2): 545–554. Bibcode:2009JVPal..29..545M. doi:10.1671/039.029.0210. S2CID84643293.
^Dalla Vecchia; Fabio M. (2009). "Anatomy and systematics of the pterosaur Carniadactylus (gen. n.) rosenfeldi (Dalla Vecchia, 1995)". Rivista Italiana de Paleontologia e Stratigrafia. 115 (2): 159–188.
^Lü, J. (2009). "A new non-pterodactyloid pterosaur from Qinglong County, Hebei Province of China". Acta Geologica Sinica (English Edition). 83 (2): 189–199. doi:10.1111/j.1755-6724.2009.00062.x. S2CID247739978.
^Lü J. (2009). "A baby pterodactyloid pterosaur from the Yixian Formation of Ningcheng, Inner Mongolia, China". Acta Geologica Sinica. 83 (1): 1–8. doi:10.1111/j.1755-6724.2009.00001.x. S2CID85074573.