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Abstract:

Herein we describe a new rhynchocephalian taxon from the Middle Jurassic of Patagonia, Argentina, representing the first Jurassic record of the group in South America. The new taxon, consisting of a complete dentary, is ascribed to Sphenodontia based on the presence of a deep and wide Meckelian groove, long posterior process, well-developed coronoid process, and acrodont teeth showing dental regionalization including successional, alternate hatchling, and additional series. This allocation is reinforced by a phylogenetic analysis that places the new taxon in a basal position within a clade of sphenodontians that excludes Diphydontosaurus and Planocephalosaurus. Additionally, the new taxon clusters within a Gondwanan clade with the Indian Godavarisaurus from the Jurassic Kota Formation, sharing the presence of recurved and relatively large posterior successional teeth that are ribbed and bear a peculiar anterolingual groove. This sister-group relationship is intriguing from a palaeobiogeographical viewpoint, as it suggests some degree of endemism during the initial stages of the breakup of Pangaea. We also discuss the ontogenetic stage of the new taxon and provide insights on the evolution of successional dentition in rhynchocephalians. © 2012 The Linnean Society of London.

Registro:

Documento: Artículo
Título:A basal sphenodontian (Lepidosauria) from the Jurassic of Patagonia: New insights on the phylogeny and biogeography of Gondwanan rhynchocephalians
Autor:Apesteguía, S.; Gómez, R.O.; Rougier, G.W.
Filiación:CONICET, Fundación de Historia Natural 'Félix de Azara', CEBBAD-Universidad Maimónides, Hidalgo 775, 1405 Buenos Aires, Argentina
CONICET-Departamento de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, 1428 Buenos Aires, Argentina
Department of Anatomical Sciences and Neurobiology, University of Louisville, 500 S. Preston Street, Louisville, KY 40292, United States
Palabras clave:Argentina; Cañadón Asfalto; Central Gondwanan Desert; Gondwana; Middle Jurassic; Ontogeny; Palaeobiogeography; Rhynchocephalia; Sphenodontia; Successional dentition; Lepidosauria; Sphenodontia
Año:2012
Volumen:166
Número:2
Página de inicio:342
Página de fin:360
DOI: http://dx.doi.org/10.1111/j.1096-3642.2012.00837.x
Título revista:Zoological Journal of the Linnean Society
Título revista abreviado:Zool. J. Linn. Soc.
ISSN:00244082
CODEN:ZJLSA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00244082_v166_n2_p342_Apesteguia.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244082_v166_n2_p342_Apesteguia

Referencias:

  • Abramoff, M.D., Magalhaes, P.J., Ram, S.J., Image processing with ImageJ (2004) Biophotonics International, 11, pp. 36-42
  • Apesteguía, S., A Late Campanian sphenodontid (Reptilia, Diapsida) from northern Patagonia (2005) Comptes Rendus Palevol, 4, pp. 663-669
  • Apesteguía, S., (2008), Esfenodontes (Reptilia, Lepidosauria) del Cretácico Superior de Patagonia: anatomía y filogenia. Unpublished PhD Thesis, Universidad Nacional de La Plata; Apesteguía, S., Novas, F.E., Large Cretaceous sphenodontian from Patagonia provides insight into lepidosaur evolution in Gondwana (2003) Nature, 425, pp. 609-612
  • Arantes, B.A., Soares, M.B., Schultz, C.L., Clevosaurus brasiliensis (Lepidosauria, Sphenodontia) do Triássico Superior do Rio Grande do Sul: anatomia pós-craniana e relações filogenéticas (2009) Revista Brasileira De Paleontologia, 12, pp. 43-54
  • Benton, M.J., Classification and phylogeny of the diapsid reptiles (1985) Zoological Journal of the Linnean Society, 84, pp. 97-164
  • Blakey, R.C., Gondwana paleogeography from assembly to breakup - a 500 million year odyssey (2008) Resolving the Late Paleozoic Ice Age in Time and Space, pp. 1-28. , Fielding CR, Frank TD, Isbell JL, eds. Geological Society of America Special Paper 441
  • Bonaparte, J.F., Dinosaurs: a Jurassic assemblage from Patagonia (1979) Science, 205, pp. 1377-1379
  • Bonaparte, J.F., Les Dinosaures (Carnosaures, Allosauridés, Sauropodes, Cétiosauridés) du Jurassique moyen de Cerro Cóndor (Chubut, Argentine) (1986) Annales De Paléontologie, 72, pp. 326-386
  • Bonaparte, J.F., Sues, H.-D., A new species of Clevosaurus (Lepidosauria: Rhynchocephalia) from the Upper Triassic of Rio Grande do Sul, Brazil (2006) Palaeontology, 49, pp. 917-923
  • Borsuk-Bialynicka, M., The Late Cretaceous lizard Pleurodontagama and the origin of tooth permanency in Lepidosauria (1996) Acta Palaeontologica Polonica, 41, pp. 231-252
  • Cabaleri, N., Volkheimer, W., Silva Nieto, D., Armella, C., Cagnoni, M., Hauser, N., Matteini, M., Pimentel, M.M., (2010), U-Pb ages in zircons from Las Chacritas and Puesto Almada members of the Jurassic Cañadón Asfalto Formation, Chubut Province, Argentina. Extended Abstracts VII South American Symposium on Isotope Geology (CD-ROM, digital only). Brasilia, Brazil, 190-193; Carroll, R.L., The origin of lizards (1977) Problems in vertebrate evolution, pp. 359-396. , Andrews S, Miles R, Walker A, eds. London and New York: Academic Press
  • Carroll, R.L., A pleurosaur from the Lower Jurassic and the taxonomic position of the Sphenodontida (1985) Palaeontographica, Abteilung A, 189, pp. 1-28
  • Clark, J.M., Montellano, M., Hopson, J., Hernandez, R., Fastovsky, D.E., An Early or Middle Jurassic tetrapod assemblage from the La Boca Formation, northeastern Mexico (1994) In the shadow of the dinosaurs: Early Mesozoic tetrapods, pp. 295-302. , Fraser NC, Sues HD, eds. Cambridge: Cambridge University Press
  • Cocude-Michel, M., Les rhynchocéphales et les sauriens des calcaires lithographiques (Jurassique Supérieur) d'Europe occidentale (1963) Nouvelles Archives Du Muséum d'Histoire Naturelle De Lyon, 7, pp. 1-187
  • Coddington, J., Scharff, N., Problems with zero-length branches (1994) Cladistics, 10, pp. 415-423
  • Cope, E.D., Synopsis of the extinct Batrachia, Reptilia and Aves of North America (1869) Transactions of the American Philosophical Society, Philadelphia, 14, pp. 1-252
  • Cuneo, R., Bowring, S., (2010), Dataciones geocronológicas preliminares en la Cuenca Cañadón Asfalto, Jurásico de Chubut, Argentina. In: Artabe A, Tortello F eds. Actas X Congreso Argentino de Paleontología y Bioestratigrafía y VII Congreso Latinoamericano de Paleontología. La Plata, Argentina: Museo de La Plata, 153; Daugherty, C.H., Cree, A., Hay, J.M., Thompson, M.B., Neglected taxonomy and continuing extinctions of tuatara (Sphenodon) (1990) Nature, 347, pp. 177-179
  • Escapa, I.H., Sterli, J., Pol, D., Nicoli, L., Jurassic tetrapods and flora of Cañadón Asfalto Formation in Cerro Cóndor area, Chubut Province (2008) Revista De La Asociación Geológica Argentina, 63, pp. 613-624
  • Estes, R., The fossil record and early distribution of lizards (1983) Studies in herpetology and evolutionary biology. Essays in honor of Ernest Edward Williams, pp. 365-398. , Rhodin A, Miyata K, eds. Cambridge: Museum of Comparative Zoology, Harvard University Press
  • Evans, S.E., The skull of a new eosuchian reptile from the Lower Jurassic of South Wales (1980) Zoological Journal of the Linnean Society, 70, pp. 203-264
  • Evans, S.E., The classification of the Lepidosauria (1984) Zoological Journal of the Linnean Society, 82, pp. 87-100
  • Evans, S.E., The early history and relationships of the Diapsida (1988) The phylogeny and classification of the tetrapods, Vol. 1, pp. 221-260. , Benton MJ, ed. Oxford: Clarendon Press
  • Evans, S.E., A sphenodontian (Reptilia: Lepidosauria) from the Middle Jurassic of England (1992) Neues Jahrbuch für Mineralogie, Geologie Und Palaeontologie Mittelhungen, 8, pp. 449-457
  • Evans, S.E., Jones, M.E.H., The origin, early history and diversification of lepidosauromorph reptiles (2010) New aspects of Mesozoic biodiversity, lecture notes in earth sciences 132, pp. 27-44. , Bandyopadhyay S, ed. Berlin, Heidelberg: Springer-Verlag
  • Evans, S.E., Kermack, K.A., Assemblages of small terrestrial tetrapods from the Early Jurassic of Britain (1994) In the shadow of the dinosaurs: Early Mesozoic tetrapods, pp. 271-283. , Fraser NC, Sues H-D, eds. Cambridge: Cambridge University Press
  • Evans, S.E., Prasad, G.V.R., Manhas, B.K., Rhynchocephalians (Diapsida: Lepidosauria) from the Jurassic Kota Formation of India (2001) Zoological Journal of the Linnean Society, 133, pp. 309-334
  • Evans, S.E., Sigogneau-Russell, D., New sphenodontians (Diapsida: Lepidosauria: Rhynchocephalia) from the Early Cretaceous of North Africa (1997) Journal of Vertebrate Paleontology, 17, pp. 45-51
  • Ferigolo, J., South American first record of a sphenodontian (Lepidosauria, Rhynchocephalia) from Late Triassic-Early Jurassic of Rio Grande do Sul State, Brazil (1999) Abstracts VII International Symposium on Mesozoic terrestrial ecosystems, pp. 24-25. , Leanza HA, ed. Buenos Aires: Museo Argentino de Ciencias Naturales
  • Figari, E.G., Courtade, S.F., (1993), Evolución tectosedimentaria de la Cuenca de Cañadón Asfalto, Chubut, Argentina. In: Vergara Oroño A, ed. Actas XII Congreso Geológico Argentino y II Congreso de Exploración de Hidrocarburos 1. Mendoza, Argentina: Vergara Oroño A, 66-77; Figari, E.G., Courtade, S.F., Constantini, L.A., (1996), Stratigraphy and tectonics of Cañadón Asfalto Basin, Lows of Gastre and Gan Gan, North of Chubut Province, Argentina. GeoResearch Forum 1-2: 359-368; Fraser, N.C., A new rhynchocephalian from the British Upper Triassic (1982) Palaeontology, 25, pp. 709-725
  • Fraser, N.C., New Triassic sphenodontids from South-West England and a review of their classification (1986) Palaeontology, 29, pp. 165-186
  • Fraser, N.C., The osteology and relationships of Clevosaurus (Reptilia: Sphenodontida) (1988) Philosophical Transactions of the Royal Society B, 321, pp. 125-178
  • Fraser, N.C., A new sphenodontian from the early Mesozoic of England and North America: implications for correlating early Mesozoic continental deposits (1993) New Mexico Museum of Natural History and Science, Bulletin, 3, pp. 135-139
  • Fraser, N.C., Benton, M.J., The Triassic reptiles Brachyrhinodon and Polysphenodon and the relationships of the sphenodontids (1989) Zoological Journal of the Linnean Society, 96, pp. 413-445
  • Gaetano, L., Rougier, G.W., New materials of Argentoconodon fariasorum (Mammaliaformes, Triconodontidae) from the Jurassic of Argentina and its bearing on triconodont phylogeny (2011) Journal of Vertebrate Paleontology, 31, pp. 829-843
  • Gauthier, J.A., Estes, R., De Queiroz, K., A phylogenetic analysis of the Lepidosauromorpha (1988) Phylogenetic relationships of the lizard families: essays commemorating Charles M. Camp, pp. 15-98. , Estes R, Pregill G, eds. Stanford, CA: Stanford University Press
  • Gilmore, C.W., A new rhynchocephalian reptile from the Jurassic ofWyoming, with notes on the fauna of Quarry 9 (1909) Proceedings of the US National Museum, 37, pp. 35-42
  • Goloboff, P.A., Farris, S., Källersjö, M., Oxelmann, B., Ramírez, M., Szumik, C., Improvements to resampling measures of group support (2003) Cladistics, 19, pp. 324-332
  • Goloboff, P.A., Farris, S., Nixon, K., TNT, a free program for phylogenetic analysis (2008) Cladistics, 24, pp. 774-786
  • Goloboff, P.A., Farris, S., Nixon, K., (2008), http://www.zmuc.dk/public/phylogeny/tnt, TNT: tree analysis using new technology, v. 1.1 (Willi Hennig Society Edition). Program and documentation available at:; Gow, C.E., Raath, M.A., Fossil vertebrate studies in Rhodesia: sphenodontid remains from the Upper Triassic of Rhodesia (1977) Palaeontologia Africana, 20, pp. 121-122
  • Gradstein, F.M., Ogg, J.G., Smith, A.G., Bleeker, W., Lourens, L.J., A new Geologic Time Scale, with special reference to Precambrian and Neogene (2004) Episodes, 27, pp. 83-100
  • Günther, A., Contribution to the anatomy of Hatteria (Rhynchocephalus, Owen) (1867) Philosophical Transactions of the Royal Society of London, 157, pp. 595-629
  • Harrison, H.S., Development and succession of the teeth in Hatteria punctata (1901) Quarterly Journal of Microscope Science (N.S.), 44, pp. 161-213
  • Heckert, A.B., Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian) southwestern USA (2004) New Mexico Museum of Natural History and Science, Bulletin, 27, pp. 1-170
  • Heckert, A.B., Lucas, S.G., Rinehart, L.F., Hunt, A.P., A new genus and species of sphenodontian from the Ghost Ranch Coelophysis Quarry (Upper Triassic: Apachean), Rock Point Formation, New Mexico, USA (2008) Palaeontology, 51, pp. 827-845
  • Howes, G.B., Swinnerton, H.H., On the development of the skeleton of the Tuatara, Sphenodon punctatus; with remarks on the egg, hatching, and on the hatched young (1901) Transactions of the Zoological Society of London, 16, pp. 1-74
  • Huene, F., Über einen echten rhynchocephalen aus der Trias von Elgin, Brachyrhinodon taylori (1910) Neues Jahrbuch Für Mineralogie, Geologie Und Paläeontologie, 1910, pp. 29-62
  • Jones, M.E.H., The Early Jurassic clevosaurs from China (Diapsida: Lepidosauria) (2006) The Triassic/Jurassic terrestrial transition, pp. 548-562. , Harris JD, Lucas S, Kirkland J, Milner ARC, eds. Albuquerque, NM: New Mexico Museum of Natural History and Science Bulletin
  • Jones, M.E.H., Skull shape and feeding strategy in Sphenodon and other Rhynchocephalia (Diapsida: Lepidosauria) (2008) Journal of Morphology, 269, pp. 945-966
  • Jones, M.E.H., Dentary tooth shape in Sphenodon and its fossil relatives (Diapsida: Lepidosauria: Rhynchocephalia) (2009) Frontiers of Oral Biology, 13, pp. 9-15
  • Jones, M.E.H., Tennyson, A.J.D., Worthy, J.P., Evans, S.E., Worthy, T.H., A sphenodontine (Rhynchocephalia) from the Miocene of New Zealand and paleobiogeography of the tuatara (Sphenodon) (2009) Proceedings of the Royal Society B: Biological Sciences, 276, pp. 1385-1390
  • Kearney, M., Fragmentary taxa, missing data, and ambiguity: mistaken assumptions and conclusions (2002) Systematic Biology, 51, pp. 369-381
  • Musacchio, E.A., Beros, C., Pujana, I., Microfósiles continentales del Jurásico y el Cretácico en Chubut y su contribución a la bioestratigrafia de la Cuenca del Golfo San Jorge, Argentina (1990) Bioestratigrafía de los Sistemas Regionales del Jurásico y el Cretácico de América del Sur, Vol. 2, pp. 355-383. , Volkheimer W, ed. Mendoza: CRICYT
  • Nopsca, F., The genera of reptiles (1928) Palaeobiology, 1, pp. 163-188
  • Page, R., Ardolino, A., Barrio, R.E., Franchi, M., Lizuain, A., Page, S., Nieto, D.S., Estratigrafía del Jurásico y Cretácico del Macizo de Somún Curá, Provincias de Río Negro y Chubut (1999) Geología argentina, pp. 460-488. , Caminos R, ed. Buenos Aires: Subsecretaría de Minería de la Nación
  • Pol, D., Rauhut, O.W.M., Becerra, M.G., A Middle Jurassic heterodontosaurid dinosaur from Patagonia and the evolution of heterodontosaurids (2011) Die Naturwissenschaften, 98, pp. 369-379
  • Proserpio, C.A., Descripción geológica de la Hoja 44 e, Valle General Racedo, Provincia del Chubut (1987) Dirección Nacional De Minería Y Geología, Boletín, 201, pp. 1-102
  • Rasmussen, T.E., Callison, G., A new herbivorous sphenodontid (Rhynchocephalia: Reptilia) from the Jurassic of Colorado (1981) Journal of Paleontology, 55, pp. 1109-1116
  • Rauhut, O.W.M., Osteology and relationships of a new theropod dinosaur from the Middle Jurassic of Patagonia (2005) Palaeontology, 48, pp. 87-110
  • Rauhut, O.W.M., López-Arbarello, A., Archosaur evolution during the Jurassic: a southern perspective (2008) Revista De La Asociación Geológica Argentina, 63, pp. 557-585
  • Rauhut, O.W.M., Martin, T., Ortiz-Jaureguizar, E., Puerta, P., A Jurassic mammal from South America (2002) Nature, 416, pp. 165-168
  • Remes, K., Ortega, F., Fierro, I., Joger, U., Kosma, R., Ferrer, J.M.M., Ide, O.A., Maga, A., A new basal sauropod dinosaur from the Middle Jurassic of Niger and the early evolution of Sauropoda (2009) PLoS ONE, 4, pp. e6924. , 1-13
  • Reynoso, V.H., A sphenodontid assemblage from the Early-Mid Jurassic deposits of Huizachal Canyon, Tamauplipas, Mexico (1993) Journal of Vertebrate Paleontology, 13, pp. 54A
  • Reynoso, V.H., A Middle Jurassic Sphenodon-like sphenodontian (Diapsida:Lepidosauria) from Huizachal Canyon, Tamaulipas, México (1996) Journal of Vertebrate Paleontology, 16, pp. 210-221
  • Reynoso, V.H., A 'beaded' sphenodontian (Diapsida: Lepidosauria) from the Early Cretaceous of central Mexico (1997) Journal of Vertebrate Paleontology, 17, pp. 52-59
  • Reynoso, V.H., An unusual aquatic sphenodontian (Reptilia: Diapsida) from the Tlayua Formation (Albian), Central Mexico (2000) Journal of Paleontology, 74, pp. 133-148
  • Reynoso, V.H., Growth patterns and ontogenetic variation of the teeth and jaws of the Middle Jurassic sphenodontian Cynosphenodon huizachalensis (Reptilia: Rhynchocephalia) (2003) Canadian Journal of Earth Sciences, 40, pp. 609-619
  • Reynoso, V.H., Possible evidence of a venom apparatus in a Middle Jurassic sphenodontian from the huizachal red beds of Tamaulipas, Mexico (2005) Journal of Vertebrate Paleontology, 25, pp. 646-654
  • Reynoso, V.H., Clark, J.M., A dwarf sphenodontian from the Jurassic La Boca Formation of Tamaulipas, México (1998) Journal of Vertebrate Paleontology, 18, pp. 333-339
  • Rieppel, O., The skull in a hatchling of Sphenodon punctatus (1992) Journal of Herpetology, 26, pp. 80-84
  • Robinson, P.L., A problematic reptile from the British Upper Triassic (1973) Journal of the Geological Society of London, 129, pp. 457-479
  • Robinson, P.L., How Sphenodon and Uromastix grow their teeth and use them (1976) Morphology and biology of reptiles, pp. 43-64. , Bellairs AA, Box B, eds. London: Academic Press
  • Romer, A.S., (1956) Osteology of the reptiles, , Chicago, IL: University of Chicago Press
  • Rougier, G.W., Garrido, A., Gaetano, L., Puerta, P., Corbitt, C., Novacek, M.J., A new triconodont from South America (2007) American Museum Novitates, 3580, pp. 1-17
  • Rougier, G.W., Martinelli, A.G., Forasiepi, A.M., Novacek, M.J., New Jurassic mammals from Patagonia, Argentina: a reappraisal of australosphenidan morphology and interrelationships (2007) American Museum Novitates, 3566, pp. 1-54
  • Rubio-Cisneros, I.I., Lawton, T.F., Detrital zircon U-Pb ages of sandstones in continental red beds at Valle de Huizachal, Tamaulipas, NE Mexico: record of Early-Middle Jurassic arc volcanism and transition to crustal extension (2011) Geosphere, 7, pp. 159-170
  • Säilä, L.K., A new species of the sphenodontian reptile Clevosaurus from the Lower Jurassic of South Wales (2005) Palaeontology, 48, pp. 817-831
  • Silva Nieto, D.G., Cabaleri, N.G., Salani, F.M., Gonzales Díaz, E., Coluccia, A., (2002) Hoja Geológica 4368-27 Cerro Cóndor, provincia de Chubut, , Buenos Aires: Instituto de Geología y Recursos Minerales, Servicio Geológico Minero Argentino
  • Simpson, G.G., American terrestrial Rhynchocephalia (1926) American Journal of Science, 5, pp. 12-16
  • Smith, J.B., Dodson, P., A proposal for a standard terminology of anatomical notation and orientation in fossil vertebrate dentitions (2003) Journal of Vertebrate Paleontology, 23, pp. 1-12
  • Sterli, J., A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution (2008) Biology Letters, 4, pp. 286-289
  • Sues, H.-D., Baird, D., A skull of a sphenodontian lepidosaur from the New Haven Arkose (Upper Triassic:Norian) of Connecticut (1993) Journal of Vertebrate Paleontology, 13, pp. 370-372
  • Sues, H.-D., Olsen, P.E., Triassic vertebrates of Gondwanan aspect from the Richmond Basin of Virginia (1990) Science, 249, pp. 1020-1023
  • Sues, H.-D., Reisz, R.R., First record of the early Mesozoic sphenodontian Clevosaurus (Lepidosauria:Rhynchocephalia) from the Southern Hemisphere (1995) Journal of Palaeontology, 69, pp. 123-126
  • Sues, H.-D., Shubin, N.H., Olsen, P.E., A new sphenodontian (Lepidosauria: Rhynchocephalia) from the McCoy Brook Formation (Lower Jurassic) of Nova Scotia, Canada (1994) Journal of Vertebrate Paleontology, 14, pp. 327-340
  • Tasch, P., Volkheimer, W., Jurassic conchostracans from Patagonia (1970) University of Kansas, Paleontological Contributions, 50, pp. 1-23
  • Throckmorton, G.S., Hopson, J.A., Parks, P., A redescription of Toxolophosaurus cloudi Olson, a Lower Cretaceous herbivorous sphenodontian reptile (1981) Journal of Paleontology, 55, pp. 586-597
  • Vogt, L., Bartolomaeus, T., Giribet, G., The linguistic problem of morphology: structure versus homology and the standardization of morphological data (2010) Cladistics, 26, pp. 301-325
  • Whiteside, D.I., The head skeleton of the Rhaetian sphenodontid Diphydontosaurus avonis gen. et sp. nov., and the modernising of a living fossil (1986) Philosophical Transactions of the Royal Society of London, B, 312, pp. 379-430
  • Wiens, J.J., Missing data, incomplete taxa and phylogenetic accuracy (2003) Systematic Biology, 52, pp. 528-538
  • Wiens, J.J., Missing data and the design of phylogenetic analyses (2005) Journal of Biomedical Informatics, 39, pp. 34-42
  • Wu, X.-C., (1991), The comparative anatomy and systematics of Mesozoic sphenodontidans. Unpublished PhD Thesis, McGill University; Wu, X.-C., Late Triassic-Early Jurassic sphenodontians (Clevosaurus) from China and the Phylogeny of the Sphenodontida (1994) In the shadow of the dinosaurs: Early Mesozoic tetrapods, pp. 38-69. , Fraser NC, Sues H-D, eds. Cambridge: Cambridge University Press

Citas:

---------- APA ----------
Apesteguía, S., Gómez, R.O. & Rougier, G.W. (2012) . A basal sphenodontian (Lepidosauria) from the Jurassic of Patagonia: New insights on the phylogeny and biogeography of Gondwanan rhynchocephalians. Zoological Journal of the Linnean Society, 166(2), 342-360.
http://dx.doi.org/10.1111/j.1096-3642.2012.00837.x
---------- CHICAGO ----------
Apesteguía, S., Gómez, R.O., Rougier, G.W. "A basal sphenodontian (Lepidosauria) from the Jurassic of Patagonia: New insights on the phylogeny and biogeography of Gondwanan rhynchocephalians" . Zoological Journal of the Linnean Society 166, no. 2 (2012) : 342-360.
http://dx.doi.org/10.1111/j.1096-3642.2012.00837.x
---------- MLA ----------
Apesteguía, S., Gómez, R.O., Rougier, G.W. "A basal sphenodontian (Lepidosauria) from the Jurassic of Patagonia: New insights on the phylogeny and biogeography of Gondwanan rhynchocephalians" . Zoological Journal of the Linnean Society, vol. 166, no. 2, 2012, pp. 342-360.
http://dx.doi.org/10.1111/j.1096-3642.2012.00837.x
---------- VANCOUVER ----------
Apesteguía, S., Gómez, R.O., Rougier, G.W. A basal sphenodontian (Lepidosauria) from the Jurassic of Patagonia: New insights on the phylogeny and biogeography of Gondwanan rhynchocephalians. Zool. J. Linn. Soc. 2012;166(2):342-360.
http://dx.doi.org/10.1111/j.1096-3642.2012.00837.x