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A taxonomic and biostratigraphic re-evaluation of the Post Quarry vertebrate assemblage from the Cooper Canyon Formation (Dockum Group, Upper Triassic) of southern Garza County, western Texas

  • Jeffrey W. Martz (a1), Bill Mueller (a2), Sterling J. Nesbitt (a3), Michelle R. Stocker (a4), William G. Parker (a4) (a5), Momchil Atanassov (a6), Nicholas Fraser (a7), Jonathan Weinbaum (a8) and James R. Lehane (a9)...
Abstract

The Post Quarry, within the lower part of the type section of the Upper Triassic Cooper Canyon Formation in southern Garza County, western Texas, contains a remarkably diverse vertebrate assemblage. The Post Quarry has produced: the small temnospondyl Rileymillerus cosgriffi; the metoposaurid Apachesaurus gregorii; possible dicynodonts and eucynodonts; a clevosaurid sphenodontian; non-archosauriform archosauromorphs (Trilophosaurus dornorum, simiosaurians, and possibly Malerisaurus); the phytosaur Leptosuchus; several aetosaurs (Calyptosuchus wellesi, Typothorax coccinarum, Paratypothorax, and Desmatosuchus smalli); the poposauroid Shuvosaurus inexpectatus (“Chatterjeea elegans”); the rauisuchid Postosuchus kirkpatricki; an early crocodylomorph; several dinosauromorphs (the lagerpetid Dromomeron gregorii, the silesaurid Technosaurus smalli, a herrerasaurid, and an early neotheropod); and several enigmatic small diapsids. Revised lithostratigraphic correlations of the lower Cooper Canyon Formation with the Tecovas Formation, the occurrence of Leptosuchus, and the overall composition of the assemblage indicate that the Post Quarry falls within the Adamanian biozone, and not the Revueltian biozone. Stratigraphic subdivision of the Adamanian biozone may be possible, and the Post Quarry may be correlative with the upper part of the Adamanian biozone in Arizona. The age of the Post Quarry assemblage is possibly late Lacian or earliest Alaunian (late early Norian or earliest middle Norian), between 220 and 215 Ma.

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Abdala, F. & Giannini, N. P. 2002. Chiniquodontid cynodonts: systematic and morphometric considerations. Palaeontology 45 (6), 1151–70.
Arcucci, A. 1986. Nuevos materiales y reinterpretacion de Lagerpeton chanarensis Romer (Thecodontia, Lagerpetonidae nov.) del Triasico Medio de la Rioja, Argentina. Ameghiniana 23 (3–4), 233–42.
Ash, S. R. 1972. Upper Triassic Dockum flora of eastern New Mexico and Texas. In Breed, W. J. & Breed, C. S. (eds) Investigations in the Upper Triassic Chinle Formation: Museum of Northern Arizona Bulletin 47, 4451.
Atanassov, M. N. 2002. Two new archosaur reptiles from the Late Triassic of Texas. PhD Dissertation, Texas Tech University, Lubbock, Texas. 352 pp.
Bakker, R. T. 1986. The Dinosaur Heresies. New York: William Morrow. 481 pp.
Ballew, K. L. 1989. A phylogenetic analysis of Phytosauria (Reptilia: Archosauria) from the late Triassic of the western United States. In Lucas, S. G. & Hunt, A. P. (eds) Dawn of the age of dinosaurs in the American Southwest, 309–39. Albuquerque: New Mexico Museum of Natural History.
Bell, C. J., Head, J. J. & Mead, J. I. 2004. Synopsis of the herpetofauna from Porcupine Cave. In Barnosky, A. D. (ed) Biodiversity Response to Climate Change in the Middle Pleistocene: the Porcupine Cave Fauna from Colorado, 117–26. Berkeley: University of California Press.
Bell, C. J., Gauthier, J. A. & Bever, G. S. 2010. Covert biases, circularity, and apomophies: a critical look at the North American Quaternary Herpetofaunal Stability Hypothesis. Quaternary International 217 (1–2), 3036.
Benton, M. J. 1983. The Triassic reptile Hyperodapedon from Elgin: functional morphology and relationships. Philosophical Transactions of the Royal Society, London B 302 (1112), 605720.
Benton, M. J. 1985. Classification and phylogeny of the diapsid reptiles. Zoological Journal of the Linnean Society 84 (2), 97164.
Bever, G. S. 2005. Variation in the ilium of North American Bufo (Lissamphibia: Anura) and its implications for species-level identification of fragmentary anuran fossils. Journal of Vertebrate Paleontology 25 (3), 548–60.
Bittencourt, J. D. S. & Kellner, A. W. A. 2009. The anatomy and phylogenetic position of the Triassic dinosaur Staurikosaurus pricei, Colbert 1970. Zootaxa 2079, 159.
Bolt, J. R. & Chatterjee, S. 2000. A new temnospondyl amphibian from the Late Triassic of Texas. Journal of Paleontology 74 (4), 670–83.
Bonaparte, J. F., Ferigolo, J. & Ribeiro, A. M. 2001. A primitive Late Triassic ‘ictidosaur’ from the Rio Grande do Sul, Brazil. Palaeontology 44 (4), 623–35.
Bonaparte, J. F. & Sues, H.-D. 2006. A new species of Clevosaurus (Lepidosauria, Rhynchocephalia) from the Upper Triassic of Rio Grande do Sul, Brazil. Palaeontology 49 (4), 917–23.
Brusatte, S. L., Butler, R. J., Sulej, T. & Niedźwiedzki, G. 2009. The taxonomy and anatomy of rauisuchian archosaurs from the Late Triassic of Germany and Poland. Acta Palaeontologica Polonica 54 (2), 221–30.
Camp, C. L. 1930. A study of the phytosaurs with description of new material from western North America. Memoirs of the University of California 10, 1174.
Camp, C. L. & Welles, S. P. 1956. Triassic dicynodont reptiles, part 1, the North American genus Placerias. Memoirs of the University of California 13, 255304.
Case, E. C. 1920. Preliminary description of a new suborder of phytosaurian reptiles with a description of a new species of Phytosaurus. Journal of Geology 28, 524–35.
Case, E. C. 1922. New reptiles and stegocephalians from the Upper Triassic of western Texas. Carnegie Institution of Washington Publication 321, 184.
Case, E. C. 1928. A cotylosaur from the Upper Triassic of western Texas. Journal of the Washington Academy of Sciences 18 (7), 177–78.
Chatterjee, S. 1980. Malerisaurus, a new eosuchian reptile from the Late Triassic of India. Philosophical Transactions of the Royal Society, London B 291 (1048), 163200.
Chatterjee, S. 1983. An ictidosaur fossil from North America. Science 220 (4602), 1151–53.
Chatterjee, S. 1984. A new ornithischian dinosaur from the Triassic of North America. Naturwissenschaften 71 (12), 630–31.
Chatterjee, S. 1985. Postosuchus, a new thecodontian reptile from the Triassic of Texas, and the origin of tyrannosaurs. Philosophical Transactions of the Royal Society, London B 309 (1139), 395460.
Chatterjee, S. 1986a. The Late Triassic Dockum vertebrates: their stratigraphic and paleobiogeographic significance. In Padian, K. (ed.) The Beginning of the Age of Dinosaurs: faunal change across the Triassic-Jurassic boundary, 139–50. Cambridge, UK: Cambridge University Press.
Chatterjee, S. 1986b. Malerisaurus langstoni, a new diapsid reptile from the Triassic of Texas. Journal of Vertebrate Paleontology 6 (4), 297312.
Chatterjee, S. 1991. Cranial anatomy and relationships of a new Triassic bird from Texas. Philosophical Transactions of the Royal Society, London B 332 (1265), 277342.
Chatterjee, S. 1993. Shuvosaurus, an unusual theropod dinosaur from the Triassic of Texas. National Geographic Research & Exploration 9 (3), 274–85.
Chatterjee, S. 1995. The Triassic bird Protoavis. Archaeoptertyx 13, 1531.
Chatterjee, S. 1999. Protoavis and the early evolution of birds. Palaeontographica A 254, 1100.
Chiappe, L. M. 1995. The first 85 million years of avian evolution. Nature 378 (6555), 349–55.
Colbert, E. H., & Gregory, J. T. 1957. Correlation of continental Triassic sediments by vertebrate fossils. Geological Society of America Bulletin 68, 1456–67.
Cope, E. D. 1869. Synopsis of the extinct Batrachia, Reptilia, and Aves of North America. Proceedings of the Academy of National Sciences, Philadelphia 1868, 208–21.
Cope, E. D. 1875. Report on the geology of that part of northwestern New Mexico examined during the field-season of 1874. Annual Report upon the geographical explorations west of the 100th Meridian [Wheeler Survey], Appendix LL, Annual Report Chief of Engineers for 1875.
Currie, P. J. 1995. New information on the anatomy and relationships of Dromaeosaurus albertensis (Dinosauria: Theropoda). Journal of Vertebrate Paleontology 15 (3), 576–91.
Currie, P. J., & Zhao, X.-J. 1993. A new troodontid (Dinosauria, Theropde) braincase from the Dinosaur Park Formation (Campanian) of Alberta. Canadian Journal of Earth Sciences 30 (10), 2231–47.
Davidow-Henry, B. 1987. New metoposaurs from the southwestern United States and their phylogenetic relationships. Master's Thesis, Texas Tech University, Lubbock, Texas. 75 pp.
Davidow-Henry, B. 1989. Small metoposaurid amphibians from the Triassic of western North America and their significance. In Lucas, S. G. & Hunt, A. P. (eds) Dawn of the Age of Dinosaurs in the American Southwest, 278–92. Albuquerque: New Mexico Museum of Natural History.
Dawley, R. M., Zawiskie, J. M., & Cosgriff, J. W. 1979. A rauisuchid thecodont from the Upper Triassic Popo Agie Formation of Wyoming. Journal of Paleontology 53 (6), 1428–31.
Desojo, J. B., Ezcurra, M. D., & Kischlat, E. E. 2012. A new aetosaur genus (Archosauria: Pseudosuchia) from the early Late Triassic of southern Brazil. Zootaxa 3166, 133.
Desojo, J. B., & Ezcurra, M. D. 2011. A reappraisal of the taxonomic status of Aetosauroides (Archosauria, Aetosauria) specimens from the Late Triassic of South America and their proposed synonymy with Stagonolepis. Journal of Vertebrate Paleontology 31 (3), 596609.
Doyle, K. D., & Sues, H.-D. 1995. Phytosaurs (Reptilia: Archosauria) from the Upper Triassic New Oxford Formation of York County, Pennsylvania. Journal of Vertebrate Paleontology 15 (3), 545–53.
Drake, N. F. 1892. Stratigraphy of the Triassic formation of northwest Texas. Texas Geological Survey Annual Report 3, 225–47.
Dubiel, R. F. 1994. Triassic depositional systems, paleogeography, and paleoclimate of the Western Interior. In Caputo, M. V., Peterson, J. A., & Franczyk, K. J. (eds) Mesozoic Systems of the Rocky Mountain Region, USA, 133–68. Denver, Colorado: Rocky Mountain Section of SEPM.
Dunlavey, M. G., Whiteside, J. H. & Irmis, R. B. 2009. Ecosystem instability during the rise of the dinosaurs: evidence from the Late Triassic in New Mexico and Arizona. Geological Society of America Abstracts with Programs 41, 477.
Elder, R. L. 1978. Paleontology and paleoecology of the Dockum Group, Upper Triassic, Howard County, Texas. Master's Thesis, University of Texas, Austin, Texas. 205 pp.
Evans, S. E. 1988. The phylogeny of Prolacertiformes. In Currie, P. M., & Koster, E. H. (eds) Fourth Symposium of Mesozoic Terrestrial Ecosystems, Short Papers. Occasional Papers of the Royal Tyrrell Museum of Palaeontology 3, 7681.
Evans, S. E., Prasad, G. V. R. & Manhas, B. K. 2001. Rhynchocephalians (Diapsida: Lepidosauria) from the Jurassic Kota Formation of India. Zoological Journal of the Linnean Society 133 (3), 309–34.
Ezcurra, M. D. 2006. A review of the systematic position of the dinosauriform archosaur Eucoelophysis baldwini Sullivan and Lucas, 1999 from the Upper Triassic of New Mexico. USA. Geodiversitas 28 (4), 649–84.
Feduccia, A. & Wild, R. 1993. Birdlike characters in the Triassic archosaur Megalancosaurus. Naturwissenschaften 80 (12), 564–66.
Fiorillo, A. R., Padian, K., & Musikasinthorn, C. 2000. Taphonomy and depositional setting of the Placerias Quarry (Chinle Formation: Late Triassic, Arizona). Palaios 15 (5), 373–86.
Fraas, E. 1889. Die Labyrinthodonten der Schwabischen Trias. Palaeontolographica 60, 275–94.
Fraser, N. C. 1988. The osteology and relationships of Clevosaurus (Reptilia: Sphenodontida). Philosophical Transactions of the Royal Society, London B 321 (1204), 125–78.
Frehlier, A. P. 1986. Sedimentology, fluvial paleohydrology, and paleogeomorphology of the Dockum Formation (Triassic), West Texas. Master's Thesis, Texas Tech University, Lubbock, Texas. 198 pp.
Furin, S., Preto, N., Rigo, M., Roghi, G., Gianolla, P., Crowley, J. L. & Bowring, S. L. 2006. High precision U-Pb zircon age from the Triassic of Italy: Implications for the Triassic time scale and the Carnian origin of calcareous nannoplankton and dinosaurs. Geology 34 (12), 1009–12.
Gauthier, J. 1986. Saurischian monophyly and the origin of birds. Memoirs of the California Academy of Sciences 8, 155.
Gauthier, J., Kluge, A. G. & Rowe, T. 1988. The early evolution of the Amniota. In Benton, M. J. (ed) The Phylogeny and Classification of the Tetrapods, 103–55. Oxford: Clarendon Press.
Gauthier, J. & Padian, K. 1985. Phylogenetic, functional, and aerodynamic analyses of the origin of birds and their flight. In Hecht, M. K., Ostrom, J. H., Viohl, G., & Wellnhofer, P. (eds) The Beginning of Birds: Proceedings of the International Archaeopteryx Conference, Eichstätt, 1984. 185–97. Eichstätt: Freunde des Jura-Museums Eichstätt.
Gow, C. E. 1980. The dentitions of the Tritheledontidae (Therapsida: Cynodontia). Proceedings of the Royal Society, London B 208 (1173), 461–81.
Gower, D. J. 2000. Rauisuchian archosaurs (Reptilia, Diapsida): an overview. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 218 (3), 447–88.
Gregory, J. T. 1953. Typothorax and Desmatosuchus. Postilla 16, 127.
Gregory, J. T. 1957. Significance of fossil vertebrates for correlation of Late Triassic continental deposits of North America. International Geologic Congress, 20th Session, Mexico, Section II, 725.
Gregory, J. T. 1962. The genera of phytosaurs. American Journal of Science 260, 652–90.
Gregory, J. T. 1972. Vertebrate faunas of the Dockum Group, eastern New Mexico and West Texas. In Kelly, V. C., & Trauger, F. D. (eds) Guidebook of East-Central New Mexico, 23rd Field Conference, 120–30. Albuquerque: New Mexico Geological Society.
Haeckel, E. 1866. Generelle Morphologie der Organismen, Allgemeine Grundzuge der Organischen Formen-Wissenschaft, Mechanisch Begründet Durch die von Charles Darwin Reformirte Descendez-Theorie. Berlin: Verlag von Georg Reimer.
Harris, J. D. & Downs, A. 2002. A drepanosaurid pectoral girdle from the Ghost Ranch (Whitaker) Coelophysis Quarry (Chinle Group, Rock Point Formation, Rhaetian), New Mexico. Journal of Vertebrate Paleontology 22 (1), 7075.
Heckert, A. B. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern U.S.A. New Mexico Museum of Natural History and Science Bulletin 27, 170 pp.
Heckert, A. B., Lucas, S. G. & Krzyzanowski, S. 2002. The rauisuchian archosaur Saurosuchus from the Upper Triassic Chinle Group, southwestern U.S.A. and its biochronological significance. In Heckert, A. B. & Lucas, S. G. (eds) Upper Triassic stratigraphy and paleontology. New Mexico Museum of Natural History and Science Bulletin 21, 241–44. Albuquerque: New Mexico Museum of Natural History and Science. 301 pp.
Heckert, A. B., Lucas, S. G., Rinehart, L. F., Spielmann, J. A., Hunt, A. P. & Kahle, R. 2006. Revision of the archosauromorph reptile Trilophosaurus, with a description of the first skull of Trilophosaurus jacobsi, from the Upper Triassic Chinle Group, West Texas, USA. Palaeontology 49 (3), 120.
Heckert, A. B., Lucas, S. G., Hunt, A. P., & Spielmann, J. A. 2007. Late Triassic aetosaur biochronology. In Lucas, S. G. & Spielmann, J. A. (eds) The Global Triassic. New Mexico Museum of Natural History and Science Bulletin 41, 4950. Albuquerque: New Mexico Museum of Natural History and Science. 415 pp.
Heckert, A. B., Lucas, S. G., Rinehart, L. H., Celesky, M. D., Spielmann, J. A., & Hunt, A. P. 2010. Articulated skeletons of the aetosaur Typothorax coccinarum Cope (Archosauria: Stagonolepididae) from the Upper Triassic Bull Canyon Formation (Revueltian: Early-Mid Norian), Eastern New Mexico, USA. Journal of Vertebrate Paleontology 30 (3), 619–42.
Heckert, A. B. & Lucas, S. G. 2000. Taxonomy, phylogeny, biostratigraphy, biochronology, paleobiogeography, and evolution of the Late Triassic Aetosauria (Archosauria: Crurotarsi). Zentralblatt für Geologie und Paläontologie Teil I 1998 Heft 11–12, 1539–87.
Heckert, A. B. & Lucas, S. G. 2002a. South American occurrences of the Adamanian (Late Triassic: Latest Carnian) index taxon Stagonolepis (Archosauria: Aetosauria) and their biochronological significance. Journal of Paleontology 76 (5), 852–63.
Heckert, A. B. & Lucas, S. G. 2002b. Revised Upper Triassic stratigraphy of the Petrified Forest National Park, Arizona, U.S.A.In Heckert, A. B. & Lucas, S. G. (eds) Upper Triassic stratigraphy and paleontology. New Mexico Museum of Natural History and Science Bulletin 21, 136. Albuquerque: New Mexico Museum of Natural History and Science. 301 pp.
Heckert, A. B. & Lucas, S. G. 2003. Straitigraphy and paleontology of the lower Chinle Group (Adamanian: Latest Carnian) in the vicinity of St. Johns, Arizona. New Mexico Geological Society Guidebook 54, 281–88.
Huene, F. von. 1926. Notes on the age of the continental Triassic beds in North America with remarks on some fossil vertebrates. Proceedings of the U.S. National Museum 69, 110.
Huene, F. von. 1936. Ubersicht über Zusammensetzung und Bedeutung der Thecodontia. Zentralblatt fur Mineralogie, Serie B 1936, 162–68.
Huene, F. von. 1942. Lieferungen 3/4. Pseudosuchia, Saurischia, Rhynchosauridae und Schlussabschnitt []. Die Fossilen Reptilien des Südamerikanischen Gondwanalandes. Ergebnisse der Sauriergrabungen in Südbrasilien 1928/29 [], 61332. München: C. H. Beck'sche Verlagsbuchhandlung.
Huene, F. von. 1946. Die grossen stamme der Tetrapoden in den geologischen Zeiten. Biologischen Zentralblatt 65, 266–75.
Hungerbühler, A. 2002. The late Triassic phytosaur Mystriosuchus westphali, with a revision of the genus. Palaeontology 45 (2), 377418.
Hunt, A. P. 1993. Revision of the Metoposauridae (Amphibia: Temnospondyli) and description of a new genus from western North America. In Morales, M. (eds) Aspects of Mesozoic Geology and Paleontology of the Colorado Plateau. Museum of Northern Arizona Bulletin 59, 6797.
Hunt, A. P. 2001. The vertebrate fauna, biostratigraphy, and biochronology of the type Revueltian land-vertebrate faunachron, Bull Canyon Formation (Upper Triassic), East-Central New Mexico. In Lucas, S. G. & Ulmer-Scholle, D. S. (eds) Geology of the Llano Estacado. New Mexico Geological Society Guidebook 52, 123–52.
Hunt, A. P., Lucas, S. G., Heckert, A. B., Sullivan, R. M., & Lockley, M. G. 1998. Late Triassic dinosaurs from the western United States. Geobios 31 (4), 511–31.
Hunt, A. P., Lucas, S. G., & Heckert, A. B. 2005. Definition and correlation of the Lamyan: A new biochronological unit for the nonmarine Late Carnian (Late Triassic). In Lucas, S. G., Zeigler, K. E., Lueth, V. W., & Owen, D. E. (eds) Geology of the Chama Basin. New Mexico Geological Society Guidebook 56, 357–66.
Hunt, A. P. & Lucas, S. G. 1992. The first occurrence of the aetosaur Paratypothorax andressi (Reptilia: Archosauria) in the western United States and its biochronological significance. Palaontologische Zeitschrift 66, 147–57.
Hunt, A. P. & Lucas, S. G. 1994. Ornithischian dinosaurs from the Upper Triassic of the United States. In Fraser, N. C. & Sues, H.-D. (eds) In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods, 227–41. New York: Cambridge University Press.
Hunt, A. P. & Lucas, S. G. 1995. Vertebrate paleontology and biochronology of the lower Chinle Group (Upper Triassic), Santa Fe County, North-Central New Mexico. In Bauer, P. W., Kues, B. W., Dunbar, N. W., Karlstrom, K. E., & Harrison, B. (eds) Geology of the Santa Fe Region. New Mexico Geological Society Guidebook 46, 243–46.
Hüsing, S. K., Deenen, M. H. L., Koopmans, J. G., Krijgsman, W. 2011. Magnetostratigraphic dating of the proposed Rhaetian GSSP at Steinbergkogel (Upper Triassic, Austria): Implications for the Late Triassic time scale. Earth and Planetary Science Letters 302 (1–2), 203–16.
Irmis, R. B. 2005. The vertebrate fauna of the Upper Triassic Chinle Formation in northern Arizona. In Nesbitt, S. J., Parker, W. G., & Irmis, R. B. (eds) Guidebook to the Triassic Formations of the Colorado Plateau in northern Arizona: Geology, Paleontology and History. Mesa Southwest Museum Bulletin 9, 6388.
Irmis, R. B. 2007. Axial skeleton ontogeny in the Parasuchia (Archosauria: Pseudosuchia) and its implications for ontogenetic determination in archosaurs. Journal of Vertebrate Paleontology 27 (2), 350–61.
Irmis, R. B., Parker, W. G., Nesbitt, S. J. & Liu, J. 2007a. Early ornithischians dinosaurs: the Triassic record. Historical Biology 19 (1), 322.
Irmis, R. B., Nesbitt, S. J., Padian, K.Smith, N. D., Turner, A. H., Woody, D. & Downs, A. 2007b. A Late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs. Science 317 (5836), 358–61.
Irmis, R. B., Martz, J. W., Parker, W. G. & Nesbitt, S. J. 2010. Re-evaluating the correlation between Late Triassic terrestrial vertebrate biostratigraphy and the GSSP-defined marine stages. Albertiana 38, 4052.
Irmis, R. B., Mundil, R., Martz, J. W. & Parker, W. G. 2011. High-resolution U-Pb ages from the Upper Triassic Chinle Formation (New Mexico, USA) support a diachronous rise of dinosaurs. Earth and Planetary Science Letters 309 (3–4), 258–67.
Jacobs, L. L. & Murry, P. A. 1980. The vertebrate community of the Triassic Chinle Formation near St. Johns, Arizona. In Jacobs, L. L. (ed) Aspects of Vertebrate History, 5571. Flagstaff: Museum of Northern Arizona Press.
Kaye, F. T. & Padian, K. 1994. Microvertebrates from the Placerias Quarry: a window of Late Triassic vertebrate diversity in the American Southwest. In Fraser, N. C. & Sues, H.-D. (eds) In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods, 171–96. New York: Cambridge University Press.
Kemp, T. S. 1982. Mammal-like reptiles and the origin of mammals. London: Academic Press. 363 pp.
Langer, M. C. 2004. Basal Saurischia. In Weishampel, D. B., Dodson, P., & Osmólska, H. (eds) The Dinosauria, 2nd Edition, 2546. Berkeley: University of California Press.
Langer, M. C. 2005. Studies on continental Late Triassic tetrapod bochronology. II. The Ischigualastian and Carnian global correlation. Journal of South American Earth Sciences 19 (2), 219–39.
Langer, M. C. & Benton, M. J. 2006. Early dinosaurs: a phylogenetic study. Journal of Systematic Paleontology 4 (4), 309–58.
Langston, W. L. Jr. 1949. A new species of Paleorhinus from the Triassic of Texas. American Journal of Science, 247 (5), 324–41.
Lehane, J. 2005. Anatomy and relationships of Shuvosaurus, a basal theropod from the Triassic of Texas. Master's Thesis, Texas Tech University, Lubbock, Texas. 92 pp.
Lehman, T. M. 1994a. The saga of the Dockum Group and the case of the Texas/New Mexico boundary fault. New Mexico Bureau of Mines and Mineral Resources Bulletin 150, 3751.
Lehman, T. M. 1994b. Save the Dockum Group! West Texas Geological Society Bulletin 34 (4), 110.
Lehman, T. M., Chatterjee, S. & Schnable, J. P. 1992. The Cooper Canyon Formation (Late Triassic) of western Texas. Texas Journal of Science 44 (3), 349–55.
Lehman, T. & Chatterjee, S. 2005. The depositional setting and vertebrate biostratigraphy of the Triassic Dockum Group of Texas. Indian Journal of Earth System Sciences 114 (3), 325–51.
Long, R. A. & Ballew, K. L. 1985. Aetosaur dermal armor from the Late Triassic of southwestern North America, with special reference to the Chinle Formation of Petrified Forest National Park In Colbert, E. H. & Johnson, R. R. (eds) The Petrified Forest Through the Ages. Museum of Northern Arizona Bulletin 54, 4568.
Long, R. A. & Murry, P. A. 1995. Late Triassic (Carnian and Norian) tetrapods from the southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4, 254 pp.
Long, R. A. & Padian, K. 1986. Vertebrate biostratigraphy of the Late Triassic Chinle Formation, Petrified Forest National Park, Arizona: preliminary results. In Padian, K. (ed) The Beginning of the Age of Dinosaurs: faunal change across the Triassic–Jurassic boundary, 61169. Cambridge, UK: Cambridge University Press.
Lucas, S. G. 1993. The Chinle Group: Revised Stratigraphy and Biochronology of Upper Triassic Nonmarine Strata in the Western United States. In Morales, M. (ed.) Aspects of Mesozoic Geology and Paleontology of the Colorado Plateau. Museum of Northern Arizona Bulletin 59, 2750.
Lucas, S. G. 1998. Global Triassic tetrapod biostratigraphy and biochronology. Palaeogeography, Palaeoclimatology, Palaeoecology 143 (4), 347–84.
Lucas, S. G. 2001. First day road log, from Tucumcari to the edge of the Llano Estacado at Gruhlky, Texas, Palo Duro Canyon, Texas, and San John Hill, New Mexico. In Lucas, S. G., & Ulmer-Scholle, D.-S. (eds) Geology of the Llano Estacado. New Mexico Geological Society Guidebook 52, 1213.
Lucas, S. G. 2010. The Triassic timescale based on nonmarine tetrapod biostratigraphy and biochronology. In Lucas, S. G. (ed) The Triassic Timescale: Geological Society, London, Special Publications 334, 447500.
Lucas, S. G., Anderson, O. J. & Hunt, A. P. 1994. Triassic stratigraphy and correlations, southern High Plains of New Mexico-Texas. New Mexico Bureau of Mines and Mineral Resources Bulletin 150, 105–26.
Lucas, S. G., Heckert, A. B. & Hunt, A. P. 1997. Stratigraphy and biochronological significance of the Late Triassic Placerias quarry, eastern Arizona (U.S.A.). Neues Jahrebuch für Geologie und Paleontologie Abhandlungen 203 (1), 2346.
Lucas, S. G., Heckert, A. B. & Hunt, A. P. 2001. Triassic stratigraphy, biostratigraphy and correlation in East-Central New Mexico. In Lucas, S. G., & Ulmer-Scholle, D. (eds) Geology of the Llano Estacado. New Mexico Geological Society Guidebook 52, 85102.
Lucas, S. G., Heckert, A. B. & Hunt, A. P. 2002. A new species of the aetosaur Typothrax (Archosauria: Stagonolepididae) from the Upper Triassic of east-central New Mexico. In Heckert, A. B. & Lucas, S. G. (eds) Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin 21, 221–33. Albuquerque: New Mexico Museum of Natural History and Science. 301 pp.
Lucas, S. G., Heckert, A. B. & Rinehart, L. F. 2006. The Late Triassic aetosaur Paratypothorax. In Harris, J. D., Lucas, S. G., Spielmann, J. A., Lockley, M. G., Kirkland, J. I. & Milner, A. R. C. (eds) The Triassic–Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37, 575–80. Albuquerque: New Mexico Museum of Natural History and Science. 607 pp.
Lucas, S. G., Hunt, A. P., & Spielmann, J. A. 2007. A new aetosaur from the Upper Triassic (Adamanian: Carnian) of Arizona. In Lucas, S. G. & Spielmann, J. A. (eds) Triassic of the American West. New Mexico Museum of Natural History and Science Bulletin 40, 241–47. Albuquerque: New Mexico Museum of Natural History and Science. 247 pp.
Lucas, S. G. & Anderson, O. J. 1993. Lithostratigraphy, sedimentation, and sequence stratigraphy of Upper Triassic Dockum Formation, West Texas. In Crick, R. E. (ed) Southwest Section Geological Convention, AAPG Transactions and Abstracts, 5565. Arlington: University of Texas at Arlington.
Lucas, A. G. & Anderson, O. J. 1995. Dockum (Upper Triassic) stratigraphy and nomenclature. West Texas Geological Society Bulletin 34 (7), 511.
Lucas, S. G. & Hunt, A. P. 1989. Revised Triassic stratigraphy in the Tucumcari Basin, East-Central New Mexico. In Lucas, S. G., & Hunt, A. P. (eds) Dawn of the Age of Dinosaurs in the American Southwest, 327–29. Albuquerque: New Mexico Museum of Natural History and Science.
Lucas, S. G. & Hunt, A. P. 1993. Tetrapod biochronology of the Chinle Group (Upper Triassic), western United States. In Lucas, S. G. & Morales, M. (eds) The Nonmarine Triassic. New Mexico Museum of Natural History and Science Bulletin 3, 327–29. Albuquerque: New Mexico Museum of Natural History and Science. 478 pp+59 pp.
Lydekker, R. 1887. The fossil Vertebrata of India. Records of the Geological Survey of India 20, 5180.
Marsh, O. C. 1881. Principal characters of American Jurassic dinosaurs. Part V. The American Journal of Science and Arts, series 3 21, 417423.
Marsh, O. C. 1884. The classification and affinities of dinosaurian reptiles. Nature 31, 6869.
Martinelli, A. G., Bonaparte, J. F., Schultz, C. L. & Rubert, R. 2005. A new tritheledontid (Therapsida, Eucynodontia) from the Late Triassic of Rio Grande do Sul (Brazil) and its phylogenetic relationships among carnivorous non-mammalian eucynodonts. Ameghiniana 42 (1), 191208.
Martinelli, A. G. & Rougier, G. M. 2007. On Chaliminia musteloides (Eucynodontia: Tritheledontidae) from the Late Triassic of Argentina and a phylogeny of Ictidosauria. Journal of Vertebrate Paleontology 27 (2), 442–60.
Martinez, R. N., May, C. L. & Forster, C. A. 1996. A new carnivorous cynodont from the Ischigualasto Formation (Late Triassic, Argentina), with comments on eucynodont phylogeny. Journal of Vertebrate Paleontology 16 (2), 271–84.
Martz, J. W. 2002. The morphology and ontogeny of Typothorax coccinarum (Archosauria, Stagonolepididae) from the Upper Triassic of the American southwest. Unpublished Master's Thesis, Texas Tech University, Lubbock, Texas. 279 pp.
Martz, J. W. 2008. Lithostratigraphy, chemostratigraphy, and vertebrate biostratigraphy of the Dockum Group (Upper Triassic), of southern Garza County, West Texas. PhD Dissertation, Texas Tech University, Lubbock, Texas. 504 pp.
Martz, J. W. & Small, B. J. 2006. Tecovasuchus chatterjeei, a new aetosaur (Archosauria: Stagonolepididae) from the Tecovas Formation (Carnian, Upper Triassic) of Texas. Journal of Vertebrate Paleontology 26 (2), 308–20.
McGowan, J. H., Granata, G. E. & Seni, S. J. 1979. Depositional framework of the lower Dockum Group (Triassic), Texas Panhandle. University of Texas Bureau of Economic Geology Report of Investigations 97, 60 pp.
McGowan, J. H., Granata, G. E. & Seni, S. J. 1983. Depositional setting of the Triassic Dockum Group, Texas Panhandle and eastern New Mexico. In Reynolds, M. W. & Dolly, E. D. (eds) Mesozoic Paleogeography of the West-Central United States, 1338. Denver, Colorado: Society of Economic Paleontologists and Mineralogists, Rocky Mountain Section.
Merrem, B. 1820. Versuch eines Systems der Amphibien. Iohann Marburg: Christian Krieger. 412 pp.
Meyer, H. von. 1861. Reptilien aus dem Stubensandstein des oberen Keupers. Palaeontographica 7, 253346.
Milner, A. R. 1994. Late Triassic and Jurassic amphibians: fossil record and phylogeny. In Fraser, N. C., & Sues, H.-D. (eds) In the Shadow of the Dinosaurs: Early Mesozoic Tetrapods, 522. New York: Cambridge University Press.
Motani, R. 1997. Temporal and spatial distribution of tooth implantation in ichthyosaurs. In Callaway, J. M. & Nicholls, E. L. (eds.) Ancient Marine Reptiles, 81103. San Diego: Academic Press.
Mueller, B. & Chatterjee, S. 2007. Dicynodonts (Synapsida: Therapsida) from the Late Triassic Dockum Group of Texas. Journal of Vertebrate Paleontology 27 (3, supplement), 121A.
Mueller, B. D. & Parker, W. G. 2006. A new species of Trilophosaurus (Diapsida: Archosauromorpha) from the Sonsela Member (Chinle Formation) of Petrified Forest National Park, Arizona. In Parker, W. G., Ash, S. R. & Irmis, R. B. (eds) A Century of Research at Petrified Forest National Park 1906–2006. Museum of Northern Arizona Bulletin 62, 19125.
Murry, P. A. 1982. Biostratigraphy and paleoecology of the Dockum Group, Triassic of Texas. PhD Dissertation, Southern Methodist University, Dallas, Texas. 459 pp.
Murry, P. A. 1986. Vertebrate paleontology of the Dockum Group, western Texas and eastern New Mexico. In Padian, K. (ed) The Beginning of the Age of Dinosaurs: faunal change across the Triassic–Jurassic boundary, 109–37. Cambridge, UK: Cambridge University Press.
Murry, P. 1987. New reptiles from the Upper Triassic Chinle Formation of Arizona. Journal of Paleontology 61 (4), 773–86.
Murry, P. A. 1989. Geology and paleontology of the Dockum Formation (Upper Triassic), west Texas and eastern New Mexico. In Lucas, S. G. & Hunt, A. P. (eds) Dawn of the Age of Dinosaurs in the American Southwest, 109–37. Albuquerque: New Mexico Museum of Natural History and Science.
Muttoni, G., Kent, D. V., Olsen, R. E., Di Stefano, P., Lowrie, W., Bernasconi, S. M. & Hernández, F. M. 2004. Tethyan magnetostratigraphy from Pizzo Mondello (Sicily) and correlation to the Late Triassic Newark astrochronological polarity time scale. GSA Bulletin 116 (9/10), 1043–58.
Muttoni, G., Kent, D. V., Jadoul, F., Olsen, P. E., Rigo, M., Galli, M. T. & Nicora, A. 2010. Rhaetian magneto-biostratigraphy from the Southern Alps (Italy): Constraints on Triassic chronology. Palaeogeography, Palaeoclimatology, and Paleoecology 285 (1–2), 116.
Nesbitt, S. 2007. The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod-like convergence, and the distribution of related taxa. Bulletin of the American Museum of Natural History 302, 84 pp.
Nesbitt, S. J. 2011. The early evolution of archosaurs: relationships and the origin of major clades. Bulletin of the American Museum of Natural History 352, 292 pp.
Nesbitt, S. J., Turner, A. H., Erickson, G. M. & Norell, M. A. 2006. Prey choice and cannialistic behaviour in the theropod Coelophysis. Biology Letters 2 (4), 611–14.
Nesbitt, S. J., Irmis, R. B. & Parker, W. G. 2007. A critical re-evaluation of the Late Triassic dinosaur taxa of North America. Journal of Systematic Palaeontology 5 (2), 209–43.
Nesbitt, S. J., Irmis, R. B., Parker, W. G., Smith, N. D., Turner, A. H. & Rowe, T. 2009a. Hindlimb osteology and distribution of basal dinosauromorphs from the Late Triassic of North America. Journal of Vertebrate Paleontology 29 (2), 498516.
Nesbitt, S. J., Stocker, M. R., Small, B. J. & Downs, A. 2009b. The osteology and relationships of Vancleavea campi (Reptilia: Archosauriformes). Zoological Journal of the Linnean Society 157 (4), 814–64.
Nesbitt, S. J., Sidor, C. A., Irmis, R. B., Angielczyk, K. A., Smith, R. M. A. & Tsuji, L. A. 2010. Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira. Nature 464 (4), 9598.
Nesbitt, S. J. & Chatterjee, S. 2008. Late Triassic dinosauriforms from the Post Quarry and surrounding areas, West Texas, U.S.A. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 249 (2), 143–56.
Nesbitt, S. J. & Norell, M. A. 2006. Extreme convergence in the body plans of an early suchian (Archosauria) and an ornithomimid dinosaur (Theropoda). Proceedings of the Royal Society, London B 273 (1590), 1045–48.
Nesbitt, S. J. & Stocker, M. R. 2008. The vertebrate assemblage of the Late Triassic Canjilon Quarry (northern New Mexico, U.S.A.), and the importance of apomorphy-based assemblage comparisons. Journal of Vertebrate Paleontology 28 (4), 1063–72.
Nopsca, F. von. 1928. The genera of reptiles. Paleobiologica 1, 163–88.
Novas, F. E. 1992. Phylogenetic relationships of the basal dinosaurs, the Herrerasauridae. Palaeontology 35 (1), 5162.
Ogg, J. G. 2004. The Triassic Period. In Gradstein, F., Ogg, J. & Smith, A. (eds) A Geologic Time Scale 2004, 271306. Cambridge, UK: Cambridge University Press.
Olsen, P. E., Kent, D. V. & Whiteside, J. H. 2011. Implications of the Newark Supergroup-based astrochronology and geomagnetic polarity time scale (Newark-APTS) for the tempo and mode of the early diversification of the Dinosauria. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 101 (for 2010), 201–29.
Osborn, H. F. 1903. On the primary division of the Reptilia into two subclasses, Synapsida and Diapsida. Science 17, 275–76.
Ostrom, J. H. 1991. The question of the origin of birds. In Schultze, H. P. & Trued, L. (eds) Origins of the Higher Groups of Tetrapods, 467–84. Ithaca, New York: Cornell University Press.
Owen, R. 1842. Report on British fossil reptiles. Report of the British Association for the Advancement of Science 11, 60204.
Owen, R. 1860. Palaeontology, or, a systematic summary of extinct animals and their geological relations. Edinburgh: Adam and Charles Black.
Padian, K. & Chiappe, L. M. 1998. The origin and early evolution of birds. Biological Reviews 73 (1), 142.
Parker, W. G. 2003. Description of a new specimen of Desmatosuchus haplocerus from the Late Triassic of northern Arizona. Master's Thesis, Northern Arizona University, Flagstaff, Arizona. 315 pp.
Parker, W. G. 2005a. A new species of the Late Triassic aetosaur Desmatosuchus (Archosauria, Pseudosuchia). Comptes Rendus Paleovol 4 (4), 327–40.
Parker, W. G. 2005b. Faunal review of the Upper Triassic Chinle Formation of Arizona. Mesa Southwest Museum Bulletin 11, 3454.
Parker, W. G. 2006. The stratigraphic distribtuion of major fossil localities in Petrified Forest National Park, Arizona. In Parker, W. G., Ash, S. R. & Irmis, R. B. (eds) A Century of Research at Petrified Forest National Park 1906–2006. Museum of Northern Arizona Bulletin 62, 4662.
Parker, W. G. 2007. Reassessment of the aetosaur “Desmatosuchus chamaensis” with a reanalysis of the phylogeny of the Aetosauria (Archosauria: Pseudosuchia). Journal of Systematic Palaeontology 5 (1), 4168.
Parker, W. G. 2008. Description of new material of the aetosaur Desmatosuchus spurensis (Archosauria: Suchia) from the Chinle Formation of Arizona and a revision of the genus Desmatosuchus. PaleoBios 28 (1), 140.
Parker, W. G., Hungerbühler, A. & Martz, J. W. 2013. The taxonomic status of the phytosaurs (Archosauriformes) Machaeroprosopus and Pseudopalatus from the Late Triassic of the western United States. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103 (for 2012), 265–68.
Parker, W. G. & Barton, B. J. 2008. New information on the Upper Triassic archosauriform Vancleavea campi based on new material from the Chinle Formation of Arizona. Paleontologia Electronica 11 (3), 20 pp.
Parker, W. G. & Martz, J. W. 2011. The Late Triassic (Norian) Adamanian-Revueltian tetrapod transition in the Chinle Formation of Petrified Forest National Park, Arizona. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 101 (for 2010), 231–60.
Parrish, J. M. 1993. Phylogeny of the Crocodylotarsi, with reference to archosaurian and crurotarsan monophyly. Journal of Vertebrate Paleontology 13 (3), 287308.
Paul, G. S. 1988. Predatory Dinosaurs of the World: A Complete Illustrated Guide. New York: Simon and Schuster. 464 pp.
Paul, G. S. 2002. Dinosaurs of the Air: the Evolution and Loss of Flight in Dinosaurs and Birds. Baltimore, Maryland: John Hopkins University Press. 460 pp.
Peyer, K., Carter, J. G., Sues, H.-D., Novak, S. E., & Olsen, P. E. 2008. A new suchian archosaur from the Upper Triassic of North Carolina. Journal of Vertebrate Paleontology 28 (2), 363–81.
Ramezani, J., Hoke, G. D., Fastovsky, D. E., Bowring, S. A., Therrien, F., Dworkin, S. I., Atchley, S. C., & Nordt, L. C. 2011. High-precision U-Pb zircon geochronology of the Late Triassic Chinle Formation, Petrified Forest National Park (Arizona, USA): temporal constraints on the early evolution of dinosaurs. Geological Society of America 123 (11–12), 2142–59.
Raucci, J. J., Blakey, R. C. & Umhoefer, P. J. 2006. A new geologic map of Petrified Forest National park with emphasis on members and key beds of the Chinle Formation. In Parker, W. G., Ash, S. R. & Irmis, R. B. (eds) A Century of Research at Petrified Forest National Park 1906–2006. Museum of Northern Arizona Bulletin 62, 157–59.
Rauhut, O. W. M. 1997. Zur Schädelanatomie von Shuvosaurus inexpectatus (Dinosauria; Theropoda). In Sachs, S., Rauhut, O. W. M. & Weigert, A. (eds) 1. Treffen der deutschsprachigen Palaeoherpetologen, Düsseldorf, 21-23.02.1997, Extended Abstracts. Terra Nostra 7/97, 1721.
Rauhut, O. W. M. 2003. The interrelationships and evolution of basal theropod dinosaurs. Special Papers in Palaeontology 69. London: The Palaeontological Association. 213 pp.
Rayfield, E. J., Barrett, P. M., McDonnell, R. A. & Willis, K. J. 2005. A Geographical Information System (GIS) study of Triassic vertebrate biochronology. Geological Magazine 142 (4), 327–54.
Rayfield, E. J., Barrett, P. M. & Milner, A. R. 2009. Utility and validity of Middle and Late Triassic ‘land vertebrate faunachrons.’ Journal of Vertebrate Paleontology 29 (1), 8087.
Renesto, S. 2000. Bird-like head on a chameleon body: new specimens of the enigmatic diapsid reptile Megalancosaurus from the late Triassic of northern Italy. Rivista Italiana di Paleontologia e Stratigraphia 106 (2), 157–80.
Renesto, S. C., Spielmann, J. A., Lucas, S. G. & Spagnoli, G. T. 2010. The taxonomy and paleobiology of the Late Triassic (Carnian-Norian: Adamanian-Apachean) drepanosaurs (Diapsida: Archosauromorpha: Drepanosauromorpha). New Mexico Museum of Natural History and Science 46. Albuquerque: New Mexico Museum of Natural History and Science. 81 pp.
Renesto, S. & Binelli, G. 2006. Vallesaurus cenensis Wild, 1991, a drepanosaurid (Reptilia, Diapsida) from the Late Triassic of northern Italy. Rivista Italiana di Paleontologia e Stratigrafia 112 (1), 7794.
Renesto, S. & Fraser, N. C. 2003. Drepanosaurid (Reptilia: Diapsida) remains from a late Triassic fissure infilling at Cromhall Quarry (Avon, Great Britain). Journal of Vertebrate Paleontology 23 (3), 703–05.
Rieppel, O., Fraser, N. C. & Nosotti, S. 2003. The monophyly of Protorosauria (Reptilia, Archosauromorpha): a preliminary analysis. Atti della Societa Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 144 (2), 359–82.
Säilä, L. K. 2005. A new species of the sphenodontian reptile Clevosaurus from the Lower Jurassic of South Wales. Palaeontology 48 (4), 817–31.
Schoch, R. R. 2008. A new stereospondyl from the German Middle Triassic and the origin of Metoposauridae. Zoological Journal of the Linnean Society 152, 79113.
Schultz, C. L. 2005. Biostratigraphy of the non-marine Triassic: Is a global correlation based on tetrapod faunas possible?In Koutsoukos, E. A. M. (ed) Applied Stratigraphy, 123–45. Dordrecht, The Netherlands: Kluwer Academic Publishers.
Seeley, H. G. 1887. On the classification of the fossil animals commonly named Dinosauria. Proceedings of the Royal Society, London 43, 165–71.
Senter, P. 2004. Phylogeny of the Drepanosauridae (Reptilia: Diapsida). Journal of Systematic Paleontology 2 (3), 257–68.
Sereno, P. C. 1991a. Lesothosaurus, “fabrosaurids,” and the early evolution of Ornithischia. Journal of Vertebrate Paleontology 11 (2), 168–97.
Sereno, P. C. 1991b. Basal archosaurs: phylogenetic relationships and functional implications. Journal of Vertebrate Paleontology (Memoir 2) 11 (4 supplement), 53 pp.
Sereno, P. C. 1997. The origin and evolution of dinosaurs. Annual Reviews in Earth and Planetary Science 25, 435–89.
Sereno, P. C. 1998. A rationale for phylogenetic definitions, with application to the higher-level taxonomy of Dinosauria. Neues Jahrebuch für Geologie und Paleontologie, Abhandlungen 210, 4183.
Sereno, P. C. 2005. The logical basis of phylogenetic taxonomy. Systematic Biology 54 (4), 595619.
Sereno, P. C. & Arcucci, A. B. 1994. Dinosaurian precursors from the Middle Triassic of Argentina: Marasuchus lilloensis, gen. nov. Journal of Vertebrate Paleontology 14 (1), 5373.
Shubin, N. H., Crompton, A. W., Sues, H.-D. & Olsen, P. E. 1991. New fossil evidence on the sister-group of mammals and early Mesozoic faunal distributions. Science 251 (4997), 1063–65.
Sidor, C. A. & Hancox, P. J. 2006. Elliotherium kersteni, a new tritheledontid from the Lower Elliot Formation (Upper Triassic) of South Africa. Journal of Paleontology 80 (2), 333–42.
Simpson, E. O. 1998. The phylogeny and biostratigraphic utility of parasuchids from the Dockum Group of West Texas. Master's Thesis, Texas Tech University, Lubbock, Texas. 140 pp.
Small, B. J. 1985. The Triassic thecodontian reptile Desmatosuchus: osteology and relationships. Master's Thesis, Texas Tech University, Lubbock, Texas. 83 pp.
Small, B. J. 1989a. Post Quarry. In Lucas, S. G. & Hunt, A. P. (eds) Dawn of the Age of Dinosaurs in the American Southwest, 145–48. Albuquerque: New Mexico Museum of Natural History and Science.
Small, B. J. 1989b. Aetosaurs from the Upper Triassic Dockum Formation, Post Quarry, West Texas. In Lucas, S. G. & Hunt, A. P. (eds) Dawn of the Age of Dinosaurs in the American Southwest, 301–08. Albuquerque: New Mexico Museum of Natural History and Science.
Small, B. J. 2002. Cranial anatomy of Desmatosuchus haplocerus (Reptilia: Archosauria: Stagonolepididae). In Norman, D. B. & Gower, D. J. (eds) Archosaurian anatomy and paleontology. Zoological Journal of the Linnean Society 136 (1), 97111.
Smith, N. D., Makovicky, P. J., Hammer, W. R. & Currie, P. J. 2007. Osteology of Cryolophosaurus ellioti (Dinosauria: Theropoda) from the Early Jurassic of Antarctica and implications for early theropod evolution. Zoological Journal of the Linnean Society 151 (2), 377421.
Spielmann, J. A., Lucas, S. G., Hunt, A. P. & Heckert, A. B. 2006. Reinterpretation of the holotype of Malerisaurus langstoni, a diapsid reptile from the Upper Triassic Chinle Group of West Texas. In Harris, J. D., Lucas, S. G., Spielmann, J. A., Lockley, M. G., Kirkland, J. I. & Milner, A. R. C. (eds) The Triassic–Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37, 543–47. Albuquerque: New Mexico Museum of Natural History and Science. 607 pp.
Spielmann, J. A., Lucas, S. G., Heckert, A. B., Rinehart, L. F. & Hunt, A. P. 2007. Taxonomy and biostratigraphy of the Late Triassic archosauromorph Trilophosaurus. In Lucas, S. G. & Spielmann, J. A. (eds) The Global Triassic. New Mexico Museum of Natural History and Science Bulletin 41, 229–40. Albuquerque: New Mexico Museum of Natural History and Science. 415 pp.
Spielmann, J. A., Lucas, S. G., Rinehart, L. F. & Heckert, A. B. 2008. The Late Triassic archosauromorph Trilophosaurus. New Mexico Museum of Natural Science Bulletin 43. Albuquerque: New Mexico Museum of Natural History and Science. 177 pp.
Stocker, M. R. 2010. A new taxon of phytosaur (Archosauria: Pseudosuchia) from the Late Triassic (Norian) Sonsela Member (Chinle Formation) in Arizona, and a critical reevaluation of Leptosuchus Case, 1922. Paleontology 53 (5), 9971022.
Stocker, M. R. 2012. A new phytosaur (Archosauriformes, Phytosauria) from the Lot's Wife beds (Sonsela Member) within the Chinle Formation (Upper Triassic) of Petrified Forest National Park. Journal of Vertebrate Paleontology 32 (3), 573–86.
Stocker, M. R. 2013. A new taxonomic arrangement for Paleorhinus scurriensis. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103 (for 2012), 251–63.
Sues, H.-D. & Fraser, N. C. 2010. Triassic Life On Land: The Great Transition. New York: Columbia University Press. 236 pp.
Therrien, F. & Fastovsky, D. E. 2000. Paleoenvironments of early theropods, Chinle Formation (Late Triassic), Petrified Forest National Park, Arizona. Palaios 15 (3), 194211.
Walker, A. D. 1968. Protosuchus, Proterochampsa, and the origin of phytosaurs and crocodiles. Geological Magazine 105, 114.
Watson, D. M. S. 1919. The structure, evolution, and origin of Amphibia-the orders Rhachitomi and Stereospondyli. Philosophical Transactions of the Royal Society, London, Series B 209, 173.
Weinbaum, J. C. 2002. Osteology and relationships of Postosuchus kirkpatricki (Archosauria, Crurotarsi). Master's Thesis, Texas Tech University, Lubbock, Texas. 78 pp.
Weinbaum, J. C. 2007. Review of the Triassic reptiles Poposaurus gracilis and Postosuchus kirkpatricki (Reptilia: Archosauria). PhD Dissertation, Texas Tech University, Lubbock, Texas. 183 pp.
Weinbaum, J. C. 2011. The skull of Postosuchus kirkpatricki (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States. PaleoBios 30 (1), 1844.
Weinbaum, J. C. 2013. Postcranial skeleton of Postosuchus kirkpatricki (Archosauria: Paracrocodylomorpha) from the Upper Triassic of the United States. Geological Society, London, Special Publications 379. doi 10.1144/SP379.7
Weinbaum, J. C. & Hungerbühler, A. 2007. A revision of Poposaurus gracilis (Archosauria, Suchia) based on two new specimens from the Late Triassic of the southwestern U.S.A. Paläontologische Zeitschrift 81 (2), 131–45.
Westphal, F. 1976. Phytosauria. In Kuhn, O. (ed) Handbuch der Paläoherpetologie: Thecodontia, 99120. Stuttgart & New York: G. Fischer.
Williston, S. W. 1925. The osteology of the reptiles. Cambridge, Massachusetts: Harvard University Press. 300 pp.
Wilson, J. A. 1948. A small amphibian from the Triassic of Howard County, Texas. Journal of Paleontology 22 (3), 359–61.
Witmer, L. M. 1991. Perspectives on avian origins. In Schultze, H.-P. & Trued, L. (eds) Origins of the Higher Groups of Tetrapods, 427–66. Ithaca, New York: Cornell University Press.
Witmer, L. M. 2001. The role of Protoavis in the debate on avian origins. In Gauthier, J. A. & Gall, L. F. (eds) New perspectives on the Origin and Early Evolution of Birds: Proceedings of an International Origin in Honor of John H. Ostrom, 537–48. New Haven, Connecticut: Yale University Press.
Witmer, L. M. 2002. The debate on avian ancestry: phylogeny, function, and fossils. In Chiappe, L. M. & Witmer, L. M. (eds) Mesozoic Birds: Above the Heads of the Dinosaurs, 330. Berkeley: University of California Press.
Yates, A. M. & Warren, A. A. 2000. The phylogeny of “higher” temnospondyls (Vertebrata: Choanata) and its implications for the monophyly and origins of the Stereospondyli. Zoological Journal of the Linnean Society 128 (1), 77121.
Zanno, L. E., Heckert, A. B., Krzyzanowski, S. E. & Lucas, S. G. 2002. Diminutive metoposaurid skulls from the Upper Triassic Blue Hills (Adamanian: latest Carnian) of Arizona. In Heckert, A. B. & Lucas, S. G. (eds) Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin 21, 121–25. Albuquerque: New Mexico Museum of Natural History and Science. 301 pp.
Zittel, K. A. v. 1887–1890. Handbuch der Palaeontologie. 1. Abteilung: Paläozoologie, Band 3. München: R. Oldenbourg. 719 pp.
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