The osteology and relationships of Vancleavea campi (Reptilia: Archosauriformes)

Zoological Journal of the Linnean Society

Volumn 157, Issue 4, 2009, Pages 814-864

  Nesbitt, Sterling J ^a,b   Stocker, Michelle R ^c,f   Small, Bryan J ^d   Downs, Alex ^e  

^a Department of Earth and Environmental Sciences   (United States)

^b DIVISION OF INVERTEBRATE ZOOLOGY   (United States)

^c UNIVERSITY OF IOWA   (United States)

^d DENVER MUSEUM OF NATURE AND SCIENCE   (United States)

^e Ghost Ranch Conference Center   (United States)

^f UNIVERSITY OF TEXAS AT AUSTIN   (United States)

Author keywords

Aquatic adaptations; Archosauriform; Chinle Formation; Coelophysis Quarry; Triassic

Indexed keywords

ARCHOSAURIA; ARCHOSAURIFORMES; COELOPHYSIS; ERYTHROSUCHUS; EUPARKERIA; MURAENA HELENA; PROTEROSUCHUS; REPTILIA;

EID: 70849103424     PISSN: 00244082     EISSN: 10963642     Source Type: Journal    
DOI: 10.1111/j.1096-3642.2009.00530.x     Document Type: Article

References (155)

1. Arcucci AB. 1990. Un nuevo Proterochampsidae (Reptilia-Archosauriformes) de Lar fauna local de los Chanares (Triasico medio) La rioja, Argentina. Ameghiniana 27 : 365 378.
2. Bakker RT, Galton PM. 1974. Dinosaur monophyly and a new class of vertebrates. Nature 248 : 168 172.
3. Bennett SC. 1996. The phylogenetic position of the Pterosauria within Archosauromorpha. Zoological Journal of the Linnean Society 118 : 261 308.
4. Benton MJ. 1985. Classification and phylogeny of the diapsid reptiles. Zoological Journal of the Linnean Society 84 : 97 164.
5. Benton MJ. 1990. Origin and interrelationships of dinosaurs. In : Weishampel DB, Dobson P, Osmolska H, eds. The dinosauria. Berkeley, CA : University of California Press, 11 30.
6. Benton MJ. 1999. Scleromochlus taylori and the origin of dinosaurs and pterosaurs. Philosophical Transactions of the Royal Society of London, Series B 354 : 1423 1446.
7. Benton MJ. 2004. Origins and relationships of Dinosauria. In : Weishampel DB, Dobson P, Osmolska H, eds. Dinosauria II. Berkeley, CA : University of California Press, 7 24.
8. Benton MJ, Clark JM. 1988. Archosaur phylogeny and the relationships of the Crocodylia. In : Benton MJ, ed. The phylogeny and classification of the tetrapods. Vol 1: amphibians and reptiles. Oxford : Clarendon Press, 295 338.
9. Benton MJ, Juul L, Storrs GW, Galton PM. 2000. Anatomy and systematics of the prosauropod dinosaur Thecodontosaurus antiquus from the Upper Triassic of southern England. Journal of Vertebrate Paleontology 20 : 77 108.
10. Bonaparte JF. 1971. Los tetrapods del sector superior de la Formacion Los Colorados, La Rioja, Argentina. Opera Lilloana 12 : 1 183.
11. Borsuk-Bialynicka M, Evans SE. 2003. A basal archosauriform from the Early Triassic of Poland. Acta Palaeontologica Polonica 48 : 649 652.
12. Brandt DS. 1989. Taphonomic grades as a classification for fossiliferous assemblages and implications for paleoecology. Palaios 4 : 303 309.
13. Brochu CA. 2003. Osteology of Tyrannosaurus rex: insights from a nearly complete skeleton and high-resolution computed tomographic analysis of the skull. Journal of Vertebrate Paleontology 22 (Suppl. to 4 1 138.
14. Broom R. 1903. On a new reptile (Proterosuchus fergusi) from the Karoo beds of Tarkastad, South Africa. Annals of the South African Museum 4 : 159 164.
15. Broom R. 1905. Notice of some new fossil reptiles from the Karroo beds of South Africa. Records of the Albany Museum 1 : 331 337.
16. Broom R. 1913. Note on Mesosuchus browni, Watson and on a new South African Triassic pseudosuchian (Euparkeria capensis). Records of the Albany Museum 2 : 394 396.
17. Broom R. 1925. On the origin of lizards. Proceedings of the Zoological Society of London 1925 : 1 16.
18. Camp CL. 1930. A study of the phytosaurs with description of new material from western North America. Memoirs of the University of California 10 : 1 174.
19. Camp CL. 1945. Prolacerta and the protorosaurian reptiles. Part 1. American Journal of Science 243 : 17 32.
20. Carroll RL. 1988. Vertebrate paleontology and evolution. New York : W.H. Freeman and Co.
21. Charig AJ, Reig FLS. 1970. The classification of the Proterosuchia. Biological Journal of the Linnean Society 2 : 125 171.
22. Charig AJ, Sues H-D. 1976. Proterosuchia. In : Kuhn O, ed. Handbuch der Palaoherpetologie. Stuttgart : Gustav Fischer, 11 39.
23. Chatterjee S. 1985. Postosuchus, a new thecodontian reptile from the Triassic of Texas and the origin of tyrannosaurs. Philosophical Transactions of the Royal Society of London, Series B 309 : 395 460.
24. Chinsamy A. 1993. Bone histology and growth trajectory of the prosauropod dinosaur Massospondylus carinatus Owen. Modern Geology 18 : 319 329.
25. Chinsamy A. 1994. Dinosaur bone histology: implications and inferences. In : Rosenberg GD, Wolber D, eds. Dino Fest Paleontological Society Special Publication 7 : 213 227.
26. Clark JM, Welman J, Gauthier J, Parrish JM. 1993. The laterosphenoid bone of early archosauriforms. Journal of Vertebrate Paleontology 13 : 48 57.
27. Clark JM, Sues H-D, Berman DS. 2000. A new specimen of Hesperosuchus agilis from the Upper Triassic of New Mexico and the interrelationships of basal crocodylomorph archosaurs. Journal of Vertebrate Paleontology 20 : 683 704.
28. Colbert EH. 1954. A pseudosuchian reptile from Arizona. Bulletin of the American Museum of Natural History 99 : 565 592.
29. Colbert EH. 1987. The Triassic reptile Prolacerta in Antarctica. American Museum Novitates 2882 : 1 19.
30. Colbert EH. 1989. The Triassic dinosaur Coelophysis. Museum of Northern Arizona Bulletin 57 : 1 160.
31. Cope ED. 1887. The dinosaurian genus Coelurus. American Naturalist 21 : 367 369.
32. Cruickshank ARI. 1972. The proterosuchian thecodonts. In : Joysey KA, Kemp TS, eds. Studies in vertebrate evolution. Edinburgh : Oliver and Boyd, 89 119.
33. Cruickshank ARI. 1978. The pes of Erythrosuchus africanus Broom. Zoological Journal of the Linnean Society 62 : 161 177.
34. Cruickshank ARI. 1979. The ankle joint in some early archosaurs. South African Journal of Science 75 : 168 178.
35. Currey JD, Alexander RM. 1985. The thickness of the walls of tubular bones. Journal of Zoology 206 : 453 468.
36. Curry KA. 1999. Ontogenetic histology of Apatosaurus (Dinosauria: Sauropoda): new insights on growth rates and longevity. Journal of Vertebrate Paleontology 19 : 654 665.
37. Dilkes DW. 1998. The Early Triassic rhynchosaur Mesosuchus browni and the interrelationships of basal archosauromorph reptiles. Philosophical Transactions of the Royal Society of London, Series B 353 : 501 541.
38. Downs A, Davidge J. 1997. A choristodere from the Ghost Ranch Coelophysis quarry. Journal of Vertebrate Paleontology 17 : 43A 44A.
39. Dzik J. 2003. A beaked herbivorous archosaur with dinosaur affinities from the early Late Triassic of Poland. Journal of Vertebrate Paleontology 23 : 556 574.
40. Evans SE. 1988. The braincase of Prolacerta broomi (Reptilia, Triassic). Neues Jahrbuch für Geologie und Paläeontologie Abhandlungen 173 : 181 200.
41. Ewer RF. 1965. The anatomy of the thecodont reptile Euparkeria capensis Broom. Philosophical Transactions of the Royal Society of London, Series B 248 : 379 435.
42. Fordyce E, Muizon C. 2001. Evolutionary history of cetaceans: a review. In : Mazin J-M, de Buffrénil V, eds. Secondary adaptation of tetrapods to life in water. Munich : Verlag Dr. Friedrich Pfeil, 169 233.
43. Fraser NC, Padian K, Walkden GM, Davis ALM. 2002. Basal dinosauriform remains from Britain and the diagnosis of the Dinosauria. Palaeontology 45 : 79 95.
44. Gauthier J, Padian K. 1985. Phylogenetic, functional, and aerodynamic analyses of the origin of birds and their flight. In : Hecht MK, Ostrum JH, Viohl G, Wellnhofer P, eds. The beginnings of birds. Eichstatt : Freunde des Jura-Museums, 185 197.
45. Gauthier JA. 1984. A cladistic analysis of the higher systematic categories of Diapsida. PhD Thesis, University of California Berkeley.
46. Gauthier JA. 1986. Saurischian monophyly and the origin of birds. Memoirs of the California Academy of Science 8 : 1 55.
47. Gauthier JA, Kluge AG, Rowe T. 1988. Amniote phylogeny and the importance of fossils. Cladistics 4 : 105 209.
48. Germain D, Laurin M. 2005. Microanatomy of the radius and lifestyle in amniotes (Vertebrata, Tetrapoda). Zoological Scripta 34 : 335 350.
49. Gow CE. 1970. The anterior of the palate in Euparkeria. Palaeontologia Africana 13 : 61 62.
50. Gow CE. 1975. The morphology and relationships of Youngina capensis Broom and Prolacerta broomi Parrington. Palaeontologia Africana 18 : 89 131.
51. Gower DJ. 1996. The tarsus of erythrosuchid archosaurs (Reptilia), and implications for early diapsid phylogeny. Zoological Journal of the Linnean Society 116 : 347 375.
52. Gower DJ. 1997. The braincase of the early archosaurian reptile Erythrosuchus africanus. Journal of Zoology, London 242 : 557 576.
53. Gower DJ. 1999. The cranial and mandibular osteology of a new rauisuchian archosaur from the Middle Triassic of southern Germany. Stuttgarter Beitraege zur Naturkunde Serie B (Geologie und Palaeontologie) 280 : 1 49.
54. Gower DJ. 2002. Braincase evolution in suchian archosaurs (Reptilia: Diapsida): Evidence from the rauisuchian Batrachotomus kupferzellensis. Zoological Journal of the Linnean Society 136 : 49 76.
55. Gower DJ. 2003. Osteology of the early archosaurian reptile Erythrosuchus africanus Broom. Annals of the South African Museum 110 : 1 84.
56. Gower DJ, Nesbitt SJ. 2006. The braincase of Arizonasaurus babbitti- further evidence of the non-monophyly of Rauisuchia. Journal of Vertebrate Paleontology 26 : 79 87.
57. Gower DJ, Sennikov AG. 1996. Braincase morphology in early archosaurian reptiles. Palaeontology 39 : 883 906.
58. Gower DJ, Sennikov AG. 1997. Sarmatosuchus and the early history of the Archosauria. Journal of Vertebrate Paleontology 17 : 60 73.
59. Gower DJ, Sennikov AG. 2000. Early archosaurs from Russia. In : Benton MJ, Shishkin MA, Unwin DM, Kurochkin EN, eds. The age of dinosaurs in Russia and Mongolia. Cambridge : Cambridge University Press, 140 159.
60. Gower DJ, Weber E. 1998. The braincase of Euparkeria, and the evolutionary relationships of birds and crocodilians. Biological Reviews 73 : 367 411.
61. Gower DJ, Wilkinson M. 1996. Is there any consensus of basal archosaur phylogeny? Proceedings of the Royal Society of London, Series B 263 : 1399 1406.
62. Gregory JT. 1945. Osteology and relationships of Trilophosaurus. University of Texas Publication 4401 : 273 359.
63. Gross W. 1934. Die Typen des mikroskopischen Knochenbaues bei fossilen Stegocephalen und reptilien. Zeitschrift für Anatomie und Entwicklungsgeschichte 203 : 731 764.
64. Harris JD, 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 : 70 75.
65. Haughton SH. 1924. On a new type of thecodont from the Middle Beaufort Beds. Annals of the Transvaal Museum 11 : 93 97.
66. Heckert AB. 2004. Late Triassic microvertebrates from the lower Chinle Group (Otischalkian-Adamanian: Carnian), southwestern USA. New Mexico Museum of Natural History & Science Bulletin 27 : 1 170.
67. Horner JR, de Ricqlés A, Padian K. 2000. The bone histology of the hadrosaurid dinosaur Maiasaura peeblesorum: growth dynamics and physiology based on an ontogenetic series of skeletal elements. Journal of Vertebrate Paleontology 20 : 109 123.
68. Huene F. 1911. Uber Erythrosuchus, Vertreter der neuen Reptil-Ordnung Pelycosimia. Geologische und palaeontologische Abhandlungun 10 : 1 60.
69. Huene F. 1946. Die grossen Stamme der Tetrapoden in den geologischen Zeiten. Biologische Zentralblatt 65 : 268 275.
70. Hughes B. 1963. The earliest archosaurian reptiles. South African Journal of Science 59 : 221 241.
71. Hungerbühler A. 2002. The Late Triassic phytosaur Mystriosuchus westphali, with a revision of the genus. Palaeontology 45 : 377 418.
72. Hunt AP. 1989. Cranial morphology and ecology among phytosaurs. In : Lucas SG, Hunt AP, eds. Dawn of the age of dinosaurs in the American Southwest. Albuquerque, NM : New Mexico Museum of Natural History and Science, 349 354.
73. Hunt AP, Heckert AB, Lucas SG, Downs A. 2002. The distribution of the enigmatic reptile Vancleavea in the Upper Triassic Chinle Group of the western United States. New Mexico Museum of Natural History and Science Bulletin 21 : 269 273.
74. Hunt AP, Lucas SG. 1989a. Late Triassic vertebrate localities in New Mexico. In : Lucas SG, Hunt AP, eds. Dawn of the age of dinosaurs in the American Southwest. Albuquerque, NM : New Mexico Museum of Natural History and Science, 72 101.
75. Hunt AP, Lucas SG. 1989b. Stratigraphy and vertebrate biochronology of Upper Triassic strata in the Chama Basin, north-central New Mexico. Abstracts of the Symposium on Southwestern Geology and Paleontology, Museum of Northern Arizona, Flagstaff 15.
76. Hunt AP, Lucas SG. 1993. A new phytosaur (Reptilia: Archosauria) genus from the uppermost Triassic of the western United States and its biochronological significance. New Mexico Museum of Natural History and Science Bulletin 3 : 193 196.
77. Hunt AP, Lucas SG, Spielmann JA. 2005. The holotype specimen of Vancleavea campi from Petrified Forest National Park, Arizona, with notes on the taxonomy and distribution of the taxon. New Mexico Museum of Natural History and Science Bulletin 29 : 59 66.
78. Hunt AP, Spielmann JA, Lucas SG. 2006. A sphenosuchian (Archosauria, Crocodylomorpha) with a partial pelvis from the Upper Triassic Bull Canyon Formation (Norian: Revueltian), east-central New Mexico. New Mexico Museum of Natural History and Science Bulletin 37 : 571 574.
79. Irmis RB, Nesbitt SJ, Padian K, Smith ND, Turner AH, Woody D, Downs A. 2007. A late Triassic dinosauromorph assemblage from New Mexico and the rise of dinosaurs. Science 317 : 358 361.
80. Juul L. 1994. The phylogeny of basal archosaurs. Paleontologia Africana 31 : 1 38.
81. Kidwell SM, Behrensmeyer AK. 1988. Overview: ecological and evolutionary implications of taphonomic processes. Palaeogeography, Palaeoclimatology, Palaeoecology 63 : 1 13.
82. Kriloff A, Germain D, Canoville A, Vincent P, Sache M, Laurin M. 2008. Evolution of bone microanatomy of the tetrapod tibia and its use in palaeobiological inference. Journal of Evolutionary Biology 21 : 807 826.
83. Langer MC, Benton MJ. 2006. Early dinosaurs: a phylogenetic study. Journal of Systematic Palaeontology 4 : 309 358.
84. Langer MC, Schultz CL. 2000. A new species of the Late Triassic rhynchosaur Hyperodapedon from the Santa Maria Formation of south Brazil. Palaeontology 43 : 633 652.
85. Laurin M, Germain D, Steyer J-S, Girondot M. 2006. Donnees microanatomiques sur la conquete de l'environnement terrestre par les vertebras. Comptes Rendus Palevol 5 : 603 618.
86. Laurin M, Girondot M, Loth M-M. 2004. The evolution of long bone microstructure and lifestyle in lissamphibians. Paleobiology 30 : 589 613.
87. Li C, Wu X-C, Cheng Y-N, Sato T, Wang L. 2006. An unusual archosaurian from the marine Triassic of China. Naturwissenschaften 93 : 200 206.
88. Lindgren J, Jagt JWM, Caldwell MW. 2008. A fishy mosasaur: the axial skeleton of Plotosaurus (Reptilia, Squamata) reassessed. Lethaia 40 : 153 160.
89. Long RA, Murry PA. 1995. Late Triassic (Carnian and Norian) tetrapods from the southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4 : 1 254.
90. Massare JA. 1988. Swimming capabilities of Mesozoic marine reptiles: implications for method of predation. Paleobiology 14 : 187 205.
91. Mazin J-M. 2001. Mesozoic marine reptiles: an overview. In : Mazin J-M, de Buffrénil V, eds. Secondary adaptation of tetrapods to life in water. Munich : Verlag Dr. Friedrich Pfeil, 95 117.
92. Modesto SP. 2006. The cranial skeleton of the Early Permian aquatic reptile Mesosaurus tenuidens: implications for relationships and palaeobiology. Zoological Journal of the Linnean Society 146 : 345 368.
93. Modesto SP, Sues H-D. 2004. The skull of the Early Triassic archosauromorph Prolacerta broomi and its phylogenetic significance. Zoological Journal of the Linnean Society 140 : 335 351.
94. Murry PA. 1989. Microvertebrate fossils from the Petrified Forest and Owl Rock Members (Chinle Formation) in Petrified Forest National Park and vicinity, Arizona. In : Lucas SG, Hunt AP, eds. Dawn of the age of dinosaurs in the American Southwest. Albuquerque, NM : New Mexico Museum of Natural History, 249 277.
95. Murry PA, Long RA. 1989. Geology and paleontology of the Chinle Formation, Petrified Forest National Park and vicinity, Arizona and a discussion of vertebrate fossils of the southwestern Upper Triassic. In : Lucas SG, Hunt AP, eds. Dawn of the age of dinosaurs in the American Southwest. Albuquerque, NM : New Mexico Museum of Natural History, 29 64.
96. Nesbitt SJ. 2005. The osteology of the Middle Triassic pseudosuchian archosaur Arizonasaurus babbitti. Historical Biology 17 : 19 47.
97. Nesbitt SJ. 2007. The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod convergence, and the distribution of related taxa. Bulletin of the American Museum of Natural History 302 : 1 84.
98. Nesbitt SJ, Norell MA. 2006. Extreme convergence in the body plans of an early suchian (Archosauria) and ornithomimid dinosaurs (Theropoda). Proceedings of the Royal Society of London, Series B 273 : 1045 1048.
99. Nesbitt SJ, Turner AH, Erickson GM, Norell MA. 2006. Prey choice and cannibalistic behaviour in the theropod Coelophysis. Biology Letters 2 : 611 614.
100. Nopcsa FB. 1923. Vorläufige Notiz über die Pachyostose und Osteosklerose einiger mariner Wirbeltiere. Anatomischer Anzeiger 56 : 353 359.
101. Novas FE. 1992. Phylogenetic relationships of basal dinosaurs, the Herrerasauridae. Palaeontology 63 : 677 690.
102. Novas FE. 1994. New information on the systematics and postcranial skeleton of Herrerasaurus ischigualastensis (Theropoda: Herrerasauridae) from the Ischigualasto Formation (Upper Triassic) of Argentina. Journal of Vertebrate Paleontology 13 : 400 423.
103. Parker WG, Irmis RB, Nesbitt SJ, Martz JW, Browne LS. 2005. The Late Triassic pseudosuchian Revueltosaurus callenderi and its implications for the diversity of early ornithischian dinosaurs. Proceedings of the Royal Society of London, Series B 272 : 963 969.
104. Parrington FR. 1935. On Prolacerta broomi, gen. et sp. n. and the origin of lizards. Annals and Magazine of Natural History 16 : 197 205.
105. Parrish JM. 1992. Phylogeny of the Erythrosuchidae. Journal of Vertebrate Paleontology 12 : 93 102.
106. Parrish JM. 1993. Phylogeny of the Crocodylotarsi, with reference to archosaurian and crurotarsan monophyly. Journal of Vertebrate Paleontology 13 : 287 308.
107. Parrish JM. 1999. Small fossil vertebrates from the Chinle Formation (Upper Triassic) of southern Utah. In : Gilette DD, ed. Vertebrate Paleontology in Utah. Salt Lake City : Geological Survey Miscellaneous Publication 99-1, 45 50.
108. Peyer K, Carter JG, Novak SE, Sues H-D, Olsen PE. 2008. A new pseudosuchian archosaur from the Triassic of North Carolina. Journal of Vertebrate Paleontology 28 : 363 381.
109. Polcyn MJ, Winkler DA, Jacobs LL, Newman K. 2002. Fossil occurrences and structural disturbance in the Chinle Formation at North Stinking Springs Mountain near St. Johns, Arizona. New Mexico Museum of Natural History and Science Bulletin 21 : 43 49.
110. Rauhut OWM. 2003. The interrelationships and evolution of basal theropod dinosaurs. Special Papers in Palaeontology 69 : 1 214.
111. Reid REH. 1997a. Dinosaurian physiology: the case for 'intermediate' dinosaurs. In : Farlow JO, Brett-Surman MK, eds. The complete dinosaur. Bloomington, IN : Indiana University Press, 449 473.
112. Reid REH. 1997b. How dinosaurs grew. In : Farlow JO, Brett-Surman MK, eds. The complete dinosaur. Bloomington, IN : Indiana University Press, 403 413.
113. Reig OA. 1963. La presencia de dinosaurios saurisquios en los 'Estrados de Ischigualasto' (mesotriassico superior) de las Provincias de San Juan y La Rioja (Republica Argentina). Ameghiniana 3 : 3 20.
114. Reisz RR. 1977. Petrolacosaurus, the oldest known diapsid reptile. Science 196 : 1091 1093.
115. de Ricqlés A. 1976. On bone histology of fossil and living Reptiles, with comments on its functional and evolutionary significance. In : Cox B, Bellairs A, eds. Morphology and biology of reptiles. Linnean Society Symposium 3. London, New York : Academic Press, 123 150.
116. de Ricqlés A, de Buffrénil V. 2001. Bone histology, heterochronies and the return of tetrapods to life in water: where are we? In : Mazin J-M, de Buffrénil V, eds. Secondary adaptation of tetrapods to life in water. Munich : Verlag Dr. Friedrich Pfeil, 289 310.
117. de Ricqlés A, Padian K, Horner JR. 2003. On the bone histology of some Triassic pseudosuchian archosaurs and related taxa. Annales de Paléontologie 89 : 67 101.
118. de Ricqlés A, Padian K, Knoll F, Horner JR. 2008. On the origin of high growth rates in archosaurs and their ancient relatives: Complementary histological studies on Triassic archosauriforms and the problem of a 'phylogenetic signal' in bone histology. Annales de Paléontologie 94 : 57 76.
119. Romer AS. 1956. Osteology of the reptiles. Chicago, IL : University of Chicago Press.
120. Romer AS. 1971. The Chanares (Argentina) Triassic reptile fauna. X. Two new but incompletely known long-limbed pseudosuchians. Breviora 378 : 1 10.
121. Romer AS. 1972. The Chanares (Argentina) Triassic reptile fauna. XV. Further remains of the thecodonts Lagerpeton and Lagosuchus. Breviora 394 : 1 7.
122. Sander PM. 2000. Long bone histology of the Tendaguru sauropods: implications for growth and biology. Paleobiology 36 : 466 488.
123. Schaeffer B. 1967. Late Triassic fishes from the western United States. Bulletin of the American Museum of Natural History 135 : 287 342.
124. Schwartz HL, Gillette DD. 1994. Geology and taphonomy of the Coelophysis Quarry, Upper Triassic Chinle Formation, Ghost Ranch, New Mexico. Journal of Paleontology 68 : 1118 1130.
125. Senter P. 2003. New information on cranial and dental features of the Triassic archosauriform reptile Euparkeria capensis. Palaeontology 46 : 613 621.
126. Senter P. 2004. Phylogeny of Drepanosauridae (Reptilia: Diapsida). Journal of Systematic Palaeontology 2 : 257 268.
127. Sereno PC. 1991. Basal archosaurs: phylogenetic relationships and functional implications. Journal of Vertebrate Paleontology 10 (Supplement to 3 1 53.
128. Sereno PC. 1994. The pectoral girdle and forelimb of the basal theropod Herrerasaurus ischigualastensis. Journal of Vertebrate Paleontology 13 : 425 450.
129. Sereno PC. 1999. The evolution of dinosaurs. Science 284 : 2137 2147.
130. Sereno PC, Arcucci AB. 1990. The monophyly of crurotarsal archosaurs and the origin of bird and crocodile ankle joints. Neues Jahrbuch für Geologie und Paläeontologie Abhandlungen 180 : 21 52.
131. Sereno PC, Arcucci AB. 1994a. Dinosaurian precursors from the Middle Triassic of Argentina: Lagerpeton chanarensis. Journal of Vertebrate Paleontology 13 : 385 399.
132. Sereno PC, Arcucci AB. 1994b. Dinosaurian precursors from the Middle Triassic of Argentina: Marasuchus lilloensis, gen. nov. Journal of Vertebrate Paleontology 14 : 53 73.
133. Sereno PC, Novas FE. 1992. The complete skull and skeleton of an early dinosaur. Science 258 : 1137 1140.
134. Sereno PC, Novas FE. 1994. The skull and neck of the basal theropod Herrerasaurus ischigualastensis. Journal of Vertebrate Paleontology 13 : 451 476.
135. Small B, Downs A. 2002. An unusual archosauriform from Ghost Ranch, New Mexico. Journal of Vertebrate Paleontology 22 : 108A.
136. Snyder RC. 1962. Adaptations for bipedal locomotion of lizards. American Zoologist 2 : 191 203.
137. Sorenson MD. 1999. TreeRot, 2nd edn. Boston, MA : Boston University.
138. Stewart JH, Poole FG, Wilson RR. 1972. Stratigraphy and origin of the Chinle Formation and related Upper Triassic strata in the Colorado Plateau region. U.S. Geological Survey, Professional Paper 690 : 1 333.
139. Sues H-D. 1976. Thecodontia incertae sedis: Proterochampsidae. In : Kuhn O, ed. Handbuch der Paläoherpetologie. Stuttgart : Gustav Fischer Verlag, 121 126.
140. Sues H-D, Olsen PE, Carter JG, Scott DM. 2003. A new crocodylomorph archosaur from the Upper Triassic of North Carolina. Journal of Vertebrate Paleontology 23 : 329 343.
141. Swofford DL. 2002. PAUP* (phylogenetic analysis using parsimony and other methods). Version 4.0b10. Sunderland, MA : Sinauer Associates.
142. Thornley AL. 1970. Epidermal remnants of Proterosuchus vanhoepeni. Palaeontologia Africana 13 : 57 60.
143. Wall WP. 1983. The correlation between high limb-mammals and aquatic habits in recent mammals. Journal of Paleontology 57 : 197 207.
144. Watson DM. 1912. Mesosuchus browni, gen. et spec. nov. Records of the Albany Museum 2 : 296 297.
145. Weems RE. 1980. An unusual newly discovered archosaur from the Upper Triassic of Virginia, USA. Transactions of the American Philosophical Society 70 : 1 53.
146. Wellnhofer P. 1978. Pterosauria. Handbuch der Palaeoherpetologie, Teil 19. Stuttgart : Gustav Fischer Verlag.
147. Welman J. 1998. The taxonomy of the South African proterosuchids (Reptilia, Archosauromorpha). Journal of Vertebrate Paleontology 18 : 340 347.
148. Welman J, Flemming AF. 1993. Statistical analyses of the skulls of Triassic proterosuchids (Reptilia, Archosauromorpha) from South Africa. Palaeontologia Africana 30 : 113 123.
149. Wild R. 1978. Die Flugsaurier (Reptilia, Pterosauria) aus der Oberen Trias von Cene bei Bergamo, Italien. Bolletino della Societa Paleontologica Italiana 17 : 176 256.
150. Woody DT. 2003. Revised geological assessment of the Sonsela Member, Chinle Formation, Petrified Forest National Park, Arizona. MSc Thesis, Northern Arizona University.
151. Woody DT. 2006. Revised stratigraphy of the lower Chinle Formation (Upper Triassic) of Petrified Forest National Park. Museum of Northern Arizona Bulletin 62 : 17 45.
152. Wu X-C, Russell AP. 2001. Redescription of Turfanosuchus dabanensis (Archosauriformes) and new information on its phylogenetic relationships. Journal of Vertebrate Paleontology 21 : 40 50.
153. Yates AM. 2007. The first complete skull of the Triassic dinosaur Melanorosaurus Haughton (Sauropodomorpha: Anchisauria). Special Papers in Palaeontology 77 : 9 55.
154. Young CC. 1964. The pseudosuchians in China. Palaeontologia Sinica 151 : 1 205.
155. Zaher H, Pol D, Carvalho AB, Riccomini C, Campos DA, Nava W. 2006. Redescription of the cranial morphology of Mariliasuchus amarali, and its phylogenetic affinities (Crocodyliformes, Notosuchia). American Museum Novitates 3512 : 1 40.