Late triassic environmental evolution in southwestern Pangea: Plant taphonomy of the ischigualasto formation

Palaios

Volumn 23, Issue 12, 2008, Pages 778-795

  Colombi, Carina E ^a   Parrish, Judith Totman ^b  

^a Facultad de Ciencias Naturales e Instituto M Lillo   (Argentina)

^b UNIVERSITY OF IDAHO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ALLUVIAL DEPOSIT; BASIN EVOLUTION; DEPOSITION; PALEOCLIMATE; PALEOENVIRONMENT; PALYNOMORPH; TAPHONOMY; TRIASSIC; WOODY PLANT;

EID: 58149502726     PISSN: 08831351     EISSN: None     Source Type: Journal    
DOI: 10.2110/palo.2007.p07-101r     Document Type: Article

References (116)

1. ALDRIDGE, R.J., 1988, Extinction and survival in the Conodonta, in Larwood, G.P., ed., Extinction and Survival in the Fossil Record: Systematics Association Special Papers, no. 34, Clarendon Press, New York, p. 231-256.
2. ARCHANGELSKY, S., ARRONDO, O.G., BONETTI, M.I.R., HERBST, R., HÜNICKEN, M.A., LEGUIZAMON, R.R., and STIPANÍCIC, P., 1995, Revisión y Actualización de la Obra Paleobotánica de Kurtz en la República Argentina: Academia Nacional de Ciencias, Córdoba, Argentina, 259 p.
3. ARTABE, A.E., MOREL, E.M., and SPALLETTI, L.A., 2001, Paleoecología de las floras trìásicas argentinas, in Artabe, A.E., Morel, E.M., and Zamuner, A.B., eds., El Sistema Triásico en la Argentina: Fundación Museo de La Plata "Francisco Pascasio Moreno," La Plata, Argentina, p. 143-184.
4. BAKER, V.R., 1978, Adjustment of fluvial systems to climate and source terrain in tropical and subtropical environments, in Miall, A.D., ed., Fluvial Sedimentology: Canadian Society of Petroleum Geologists Memoirs, no. 5, p. 211-230.
5. BECHSTADT, T., and DOLER-HERNER, B., 1983, Lead-zinc deposits of Bleiberg-Kreuth, in Scholle, P.A., Bebout, D.G., and Moore, C., eds., Carbonate Depositional Environments: AAPG (American Association of Petroleum Geologists) Memoirs, no. 33, p. 55-63.
6. BEHRENSMEYER, A.K., 1991, Terrestrial vertebrate accumulations, in Allison, P.A., and Briggs, D.E.G., eds., Taphonomy: Releasing the Data Locked in the Fossil Record: Topics in Geobiology: vol. 9, Plenum Press, New York, p. 291-335.
7. BEHRENSMEYER, A.K., and HOOK, R.W., 1992, Paleoenvironmental contexts and taphonomic modes, in Behrensmeyer, A.K., Damuth, J.D., DiMichele, W.A., Potts, R., Sues, H., and Wing, S.L., eds., Terrestrial Ecosystems through Time: Evolutionary Paleoecology of Terrestrial Plants and Animals: University of Chicago Press, Chicago, p. 15-135.
8. BENTON, M.J., 1986a, More than one event in the Late Triassic extinction: Nature, v. 321, p. 857-859.
9. BENTON, M.J., 1986b, The Late Triassic tetrapod extinction events, in Padian, K., ed., The Beginning of the Age of Dinosaurs: Faunal Change across the Triassic-Jurassic Boundary: Cambridge University Press, Cambridge, UK, p. 303-320.
10. BOULTER, M.C., SPICER, R.A., and THOMAS, B.A., 1988, Patterns of plant extinction from some palaeobotanical evidence, in Larwood, G.P., ed., Extinction and Survival in the Fossil Record: Clarendon Press, Oxford, UK, p. 1-36.
11. BRETT, C.E., and SPEYER, S.E., 1990, Taphofacies, in Briggs, D.E.G., and Crowther, P.R., eds., Paleobiology: A Synthesis: Blackwell Science, Oxford, UK, p. 258-263.
12. BUDAROV, K.J., GUPTA, V.J., SUDAR, M.N., and BURYL, G.J. , 1985, Conodont zonation, biofacies and provinces in the Triassic: Geological Society of India Journal, v. 26, p. 84-94.
13. BURNHAM, R.J., 1989, Relationships between standing vegetation and leaf litter in a paratropical forest: Review of Palaeobotany and Palynology, v. 58, p. 5-32.
14. CAMPBELL, I.D., 1999, Quaternary pollen taphonomy: Examples of differential re-deposition and differential preservation: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 149, p. 245-256.
15. CAREY, S.P., 1984, Conodont biofacies of the Triassic of northwestern Nevada, in Clark, D.L., ed., Conodont Biofacies and Provincialism: Geological Society of America, Special Papers, v. 196, p. 295-305.
16. CARRIZO PAEZ, N., and COLOMBI, C.E., 2004, Formación Los Colorado vs. Formación Ischigualasto: Implicancias paleoambientales (abs.): XX Jornadas Argentina de Paleontología de Vertebrados, La Plata. Ameghiniana, v. 41, p. 39-40.
17. CHANDLER, M.A., RIND, D., and RUEDY, R., 1992, Pangaean climate during the Early Jurassic: GCM simulations and the sedimentary record of paleoclimate: Geological Society of America Bulletin, v. 104, p. 543-559.
18. COLOMBI, C.E., 2007, Historia tafonómica de las communidades fósiles de la Formación Ischigualasto (Tri-acasico Superior, Carniano), San Juan, Argentina: Unpublished Ph,D. dissertation, Universidad Nacional de San Juan, San Juan, Argentina, 290 p.
19. CREBER, G.T., and CHALONER, W.G., 1984, Climatic indications from growth rings in fossil woods, in Brenchley, P.J., ed., Fossils and Climate: John Wiley & Sons, New York, p. 49-74.
20. CROWLEY, T.J., HYDE, W.T., and SHORT, D.A., 1989, Seasonal cycle variations on the supercontinent of Pangaea: Implications for Early Permian vertebrate extinctions: Geology, v. 17, p. 457-460.
21. CURRIE, B.S., COLOMBI, C.E., TABOR, N.A., SHIPMAN, T.C., and MONTANEZ, I.P., in press, Stratigraphy and architecture of the Upper Triassic Ischigualasto Formation, Ischigualasto Provincial Park, San Juan, Argentina: Journal of South American Earth Sciences.
22. DELUCA, J.L., and ERIKSSON, K.A., 1989, Controls on synchronous ephemeral- and perennial-river sedimentation in the middle sandstone member of the Triassic Chinle Formation, northeastern New Mexico, U.S.A.: Sedimentary Geology, v. 61, p. 155-175.
23. DEMKO, T.M., 1995, Taphonomy of fossil plants in the Upper Triassic Chinle Formation: Unpublished Ph.D. dissertation, University of Arizona, Tucson, 274 p.
24. DEMKO, T.M., DUBIEL, R.F., and PARRISH, J.T., 1998, Plant taphonomy in incised valleys: Implications for interpreting paleoclimate from fossil plants: Geology, v. 26, p. 1119-1122.
25. DUBIEL, R.F., PARRISH, J.T., PARRISH, J.M., and GOOD, S.C. , 1991, The Pangaean megamonsoon - Evidence from the Upper Triassic Chinle Formation, Colorado Plateau: PALAIOS, v. 6, p. 347-370.
26. EBERTH, D.A., and MIALL, A.D., 1991, Stratigraphy, sedimentology and evolution of a vertebrate-bearing, braided to anastomosed fluvial system, Cutler Formation (Permian-Pennsylvanian), north-central New Mexico: Sedimentary Geology, v. 72, p. 225-252.
27. FAWCETT, P.J., BARRON, E.J., ROBINSON, V.D., and KATZ, B.J., 1994, The climatic evolution of India and Australia from the Late Permian to Mid-Jurassic: A comparison of climate model results with the geologic record, in Klein, G.D., ed., Pangea: Paleoclimate, Tectonics, and Sedimentation during Accretion, Zenith, and Breakup of a Supercontinent: Geological Society of America, Special Papers, v. 288, p. 139-157.
28. FERGUSON, D.K., 1985, The origin of leaf assemblages - New light on an old problem: Review of Palaeobotany and Palynology, v. 46, p. 117-188.
29. FIELDING, C.R., and ALEXANDER, J., 2001, Fossil trees in ancient fluvial channel deposits: Evidence of seasonal and longer-term climatic variability: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 170, p. 59-80.
30. FLÜGEL, E., and STANLEY, G.D., JR., 1984, Reorganization, development and evolution of post-Permian reefs and reef organisms: Paleontographica Americana, v. 54, p. 177-184.
31. FLUTEAU, F., BESSE, J., BROUTIN, J., and RAMSTEIN, G., 2001, The Late Permian climate: What can be inferred from climate modelling concerning Pangea scenarios and Hercynian range altitude?: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 167, p. 39-71.
32. FRANK, P.W., 1988, Conchostraca:. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 62, p. 399-403.
33. GALLEGO, O., GUILIANO, M.E., and COLOMBI, C.E., 2004, Nuevo registro de invertebrados en la Formación Los Rastros (Triásico Medio a Superior), Parque Provincial Ischigualasto (provincia de San Juan), Argentina (abs.): Ameghiniana, v. 41, p. 11.
34. GASTALDO, R.A., 1986, Implications on the paleoecology of autochthonous Carboniferous lycopods in clastic sedimentary environments: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 53, p. 191-212.
35. GASTALDO, R.A., 1987, Confirmation of Carboniferous clastic swamp communities: Nature, v. 326, p. 869-871.
36. GASTALDO, R.A., FERGUSON, D.K., WALTER, H., and RABOLD, J.M. , 1996, Criteria to distinguish parautochthonous leaves in Tertiary alluvial channel-fills: Review of Palaeobotany and Palynology, v. 91, p. 1-21.
37. GASTALDO, R.A., and STAUB, J.R., 1999, A mechanism to explain the preservation of leaf litter lenses in coals derived from raised mires: Palaeogeography, Palaeoclimatology, Palaeoccology, v. 149, p. 1-14.
38. GAWTHORPE, R.L., and LEEDFR, M.R., 2000, Tectono-sedimentary evolution of active extensional basins: Basin Research, v. 12, p. 195-218.
39. GILE, L.H., PETERSON, F.F., and GROSSMAN, R.B., 1966, Morphological and genetic sequences of carbonate accumulations in desert soils: Soil Science, v. 101, p. 347-368.
40. GOLONKA, J., 2007, Late Triassic and Early Jurassic palaeogeography of the world: Palaeogeography, Palaeoclimatology, Palaeoccology, v. 244, p. 297-307.
41. GRADSTEIN, F.M., AGTERBERG, F.P., OGG, J.G., HARDENBOL, J., VAN VEEN, P., THIERRY, J., and HUANG, Z., 1995, A Triassic, Jurassic and Cretaceous time scale, in Berggren, W.A., Kent, D.V., Aubry, M.P, and Hardenbol, J., eds., Geochronology, Time Scales and Global Stratigraphic Correlation: SEPM (Society for Sedimentary Geology) Special Publications, no. 54, Tulsa, Oklahoma, p. 95-125.
42. GUPTA, N.S., and PANCOST, R.D., 2004, Biomolecular and physical taphonomy of angiosperm leaves during early decay: Implications for fossilization: PALAIOS, v. 19, p. 428-440.
43. HASIOTIS, S.T., and DUBIEL, R.F., 1994, Ichnofossil tiering in Triassic alluvíal paleosols: Implications for Pangean continental rocks and paleoclimate, in Beauchamp, B., Embry, A.F., and Glass, D., eds., Pangea: Global Environments and Resources: Canadian Society of Petroleum Geologists, Memoirs, v. 17, p. 311-317.
44. HERBST, R., 1970a, Estudio palinológico de la cuenca de Ischigualasto-Villa Unión (Triásico), provincias, de San Juan-La Rioja: pt. 1, Introducción, pt. 2, Monoaperturados: Ameghiniana, v. 7, p. 83-97.
45. HERBST, R., 1970b, Estudio palinológico de la cuenca de Ischigualasto-Villa Unión (Triásico), provincias de San Juan-La Rioja: pt. 3, Esporas triletes: Ameghiniana, v. 9, p. 280-288.
46. KALLIOLA, R., SALO, J., PUHAKKA, M., and RAJASILTA, M., 1991, New site formation and colonizing vegetation in primary succession on the western Amazon floodplains: Journal of Ecology, v. 79, p. 877-901.
47. KENT, D.V., and OLSEN, P.E., 2000, Magnetic polarity stratigraphy and paleolatitude of the Triassic-Jurassic Blomidon Formation in the Fundy basin (Canada): Implications for early Mesozoic tropical climate gradients: Earth and Planetary Science Letters, v. 179, p. 311-324.
48. KOZUR, H., 1976, Paleoecology of the Triassic conodonts and its bearing on multi-element taxonomy, in Barnes, C.R., ed., Conodont Paleoecology: Geological Association of Canada, Special Papers, v. 15, p. 313-324.
49. KUTZBACH, J.E., and GALLIMOE, R.G., 1989, Pangean climates: Megamonsoons of the megacontinent: Journal of Geophysical Research, v. 94, p. 3341-3357.
50. LEPAGE, B.A., and PFEFFERKORN, H.W., 2000, Did ground cover change over geologic time?, in Gastaldo, R.A., and DiMichele, W.A., eds., Phanerozoic Terrestrial Ecosystems: Paleontological Society, Special Papers, no. 6, New Haven, Connecticut, p. 171-182.
51. LOOPE, D.B., ROWE, C.M., and JOECKEL, R.M., 2001, Annual monsoon rains recorded by Jurassic dunes: Nature, v. 412, p. 64-66.
52. LÓPEZ GAMUNDI, O., ALVAREZ. L., ANDREIS, R.R., BOSSI, G.E., ESPEJO, I.S., FERNÁNDEZ SEVESO, F., LEGARRETA, L., KOKOGIAN, D., LIMARINO, C.O., and SESSAREGO, H., 1989, Cuencas intermontanas: Correlación Geológica, v. 6, p. 123-167.
53. LÓPEZ-GAMUNDI, O.R., ESPEJO, I.S., CONAGHAN, P.J., POWELL, C.McA. , and VEEVERS, J.J, 1994, Southern South America, in Powell, C.M., and Veevers, J.J., eds., Permian-Triassic Basins and Foldbelts along the Panthalassan Margin of Gondwanaland: Geological Society of America, Memoirs, v. 184, p. 281-329.
54. MACHETTE, M.N., 1985, Calcic soils of the southwestern United States, in Weide, D.L., and Faber, M.L., eds., Soils and Quaternary Geology of the Southwestern United States: Geological Society of America, Special Papers, v. 203, p. 1-21.
55. MIALL, A.D., 1977, A review of the braided-river depositional environment: Earth-Science Reviews, v. 13, p. 1-62.
56. MIALL, A.D., 1985, Architectural-element analysis: A new method of facies analysis applied to fluvial deposits: Earth Science Reviews, v. 22, p. 261-308.
57. MIALL, A.D., 1996, The Geology of Fluvial Deposits: Sedimentary Facies, Basin Analysis and Petroleum Geology: Springer-Veriag, Berlin, 582 p.
58. MILANA, J.P., and ALCOBER, O., 1994, Modelo tectonosedimentario de la cuenca triásica de Ischigualasto (San Juan, Argentina): Revista de la Asociación Geológica Argentina, v. 49, p. 217-235.
59. ODIN, G.W., and LETOLLE, R., 1982, The Triassic time scale in 1981, in Odin, G.S., ed., Numerical Dating in Stratigraphy: John Wiley & Sons, Chichester, UK, p. 523-533.
60. OLSEN, P.E., and KENT, D.V., 1999, Long-period Milankovitch cycles from the Late Triassic and Early Jurassic of eastern North America and their implications for the calibration of the early Mesozoic time-scale and the long-term behavior of the planets: Philosophical Transactions of the Royal Society of London, ser. A, v. 357, p. 1761-1786.
61. OLSEN, P.E., and KENT, D.V., 2000, High-resolution early Mesozoic Pangean climatic transect in lacustrine environments, in Bachmann, G., and Lerche, L, eds., Epicontinental Triassic: International Symposium, Vol. 3, Zentralblatt für Geologie und Paläontologie Teil 1 (1998) v. 11-12, p. 1475-1495.
62. OLSEN, P.E., and SUES, H.-D., 1986, Correlation of continental Late Triassic and Early Jurassic sediments, and patterns of the Triassic-Jurassic tetrapod transition, in Padian, K., ed., The Beginning of the Age of Dinosaurs: Faunal Change across the Triassic-Jurassic Boundary: Cambridge University Press, Cambridge, UK, p. 321-351.
63. PARRISH, J.M., 1989, Vertebrate paleoecology of the Chinle Formation (Late Triassic) of the southwestern United States: Palaeogeography, Palaeoclimatology, Palaeoecology, v, 72, p. 227-247.
64. PARRISH, J.M,, PARRISH, J.T., and ZIEGLER, A.M., 1986, Permian-Triassic paleogeography and paleoclimatology and implications for therapsid distributions, in Hotton, N,H., III, MacLean, P.D., Roth, J.J., and Roth, E.C., eds., The Ecology and Biology of Mammal-like Reptiles: Smithsonian Institution Press, Washington, DC, p. 109-132.
65. PARRISH, J.T., 1993, Climate of the supercontinent Pangea: Journal of Geology, v. 101, p. 215-233.
66. PARRISH, J.T., 1998, Interpreting Pre-Quaternary Climate from the Geologic Record: Columbia University Press, New York, 338 p.
67. PARRISH, J.T., BRADSHAW, M.T., BRAKEL, A.T., MULHOLLAND, S.M., TOTTERDELL, J.M., and YEATES, A.N., 1996, Paleoclimatology of Australia during the Pangean interval: Palaeoclimates - Data and Modelling, v. 1, p. 23-57.
68. PARRISH, J.T., and CURTIS, R.L., 1982, Atmospheric circulation, upwelling, and organic-rich rocks in the Mesozoic and Cenozoic Eras: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 40, p. 31-66.
69. PARRISH, J.T., and PETERSON, F., 1988, Wind directions predicted from global circulation models and wind directions determined from eolian sandstones of the western United States - A comparison: Sedimentary Geology, v. 56, p. 261-282.
70. PARRISH, J.T., PETERSON, F., and TURNER, C.E., 2004, Jurassic "savannah" - Plant taphonomy and climate of the Morrison Formation (Jurassic, Western U.S.A.): Sedimentary Geology, v. 167, p. 137-162.
71. PETERSON, F., 1988, Pennsylvanian to Jurassic eolian transportation systems in the western United States: Sedimentary Geology, v. 56, p. 207-260.
72. PUIGDEFÁBREGAS, C., 1973, Miocene point-bar deposits in the Ebro Basin, northern Spain: Sedimentology, v. 20, p. 133-144.
73. RAMOS, V.A., and KAY, S.M., 1991, Triassic rifting and associated basalts in the Cuyo Basin, central Argentina, in Harmon, R.S., and Rapela, C.W, eds., Andean Magmatism and Its Tectonic Setting: Geological Society of America, Special Papers, v. 265, p. 79-91.
74. RETALLACK, G.J., 1988, Field recognition of paleosols, in Reinhardt, J., and Sigleo, W.R., eds., Paleosols and Weathering through Geologic Time: Principles and Applications: Geological Society of America, Special Papers, v. 216, p. 1-20.
75. RETALLACK, G.J., 1990, Soils of the Past: Unwin Hyman, Boston, 520 p.
76. ROBINSON, P.L., 1973, Palaeoclimatology and continental drift, in Tarling, D.H., and Runcorn, S.K., eds., Implications of Continental Drift to the Earth Sciences: Academic Press, London, p. 449-476.
77. ROCHA-CAMPOS, A.C., 1973, Upper Paleozoic and Lower Mesozoic paleogeography, and paleoclimatological and tectonic events in South America, in Logan, A., and Hills, L.V., eds., The Permian and Triassic Systems and Their Mutual Boundary: Canadian Society of Petroleum Geologists, Memoirs, v. 2, p. 398-424.
78. ROGERS, R.R., ARCUCCI, A.B., ABDALA, F., SERENO, P.C., FORSTER, C.A. , and MAY, C.L., 2001, Paleoenvironment and taphonomy of the Chañares Formation tetrapod assemblage (Middle Triassic), northwestern Argentina: Spectacular preservation in volcanogenic concretions: PALAIOS, v. 16, p. 461-482.
79. 39Ar dating of dinosaur origins: Science, v. 260, p. 794-797.
80. ROWE, C.M., LOOPE, D.B., OGLESBY, R.J., VAN DER VOO, R., and BROADWATER, C.E., 2007, Inconsistencies between Pangean reconstructions and basic climate controls: Science, v. 318, p. 1284-1286.
81. ROWLEY, D.B., RAYMOND, A., PARRISH, J.T., LOTTES, A.L., SCOTESE, C.R. , and ZIEGLER, A.M., 1985, Carboniferous paleogeographic, phytogeographic, and paleoclimatic reconstructions: International Journal of Coal Geology, v. 5, p. 7-42.
82. RUMNEY, G.R., 1968, Climatology and the World's Climates: Macmillan, New York, 656 p.
83. SALO, J., KALLIOLA, R., HAKKINEN, I., MAKINEN, Y., NIEMELA, P., PUHAKKA, M., and COLEY, P.D., 1986, River dynamics and the diversity of Amazon lowland forest: Nature, v. 322, p. 254-258.
84. SCHAFER, P., and FOIS, E., 1789, Systematics and evolution of Triassic Bryozoa: Geologica et Paleontologica, v. 21, p. 17-44.
85. SCHUMM, S.A., 1985, Patterns of alluvial rivers: Annual Review of Earth and Planetary Sciences, v. 13, p. 5-27.
86. SCHUMM, S.A., 1993, River response to base level change: implications for sequence stratigraphy: Journal of Geology, v. 101, p. 279-294.
87. SHIPMAN, T.A., 2004, Links between sediment accumulation rates and the development of alluvial architecture: Triassic Ischigualasto Formation, northwestern Argentina: Unpublished Ph.D. dissertation, University of Arizona, Tucson, 187 p.
88. SIMMS, M.J., and RUFFELL, A.H., 1989, Synchroneity of climatic change and extinctions in the Late Triassic: Geology, v. 17, p. 265-268.
89. SIMMS, M.J., and RUFFELL, A., 1990, Climatic and biotic change in the Late Triassic: Journal of the Geological Society, London, v. 147, p. 321-328.
90. SOREGHAN, G.S., ELMORE, R.D., and LEWCHUK, M.T., 2002a, Sedimentologic-magnetic record of western Pangean climate in upper Paleozoic loessite (lower Cutler beds, Utah): Geological Society of America Bulletin, v. 114, p. 1019-1035.
91. SOREGHAN, G.S., MOSES, A.M., SOREGHAN, M.J., HAMILTON, M.A., FANNING, C.M., and LINK, P.K., 2007, Palaeoclimatic inferences from upper Palaeozoic siltstone of the Earp Formation and equivalents, Arizona-New Mexico (USA): Sedimentology, v. 54, p. 701-719.
92. SOREGHAN, M.J., and SOREGHAN, G.S., 2007, Whole-rock geochemistry of upper Paleozoic loessite, western Pangaea: Implications for paleo-atmospheric circulation: Earth and Planetary Science Letters, v. 255, p. 117-132.
93. SOREGHAN, M.J., SOREGHAN, G.S., and HAMILTON, M.A., 2002b, Paleowinds inferred from detrital-zircon geochronology of upper Paleozoic loessite, western equatorial Pangea: Geology, v. 30, p. 695-698.
94. SPALLETTI, L., ARTABE, A., MOREL, E., and BREA, M., 1999, Biozonación paleofloristica y cronoestratigrática del Triásico argentino: Ameghiniana, v. 36, p. 419-451.
95. SPEYER, S.E., and BRETT, C.E., 1991, Taphofacies controls: Background and episodic processes in fossil assemblage preservation, in Allison, P.A., and Briggs, D.E.G., eds., Taphonomy: Releasing the Data Locked in the Fossil Record: Plenum Press, New York, p. 501-557.
96. SPICER, R.A., 1981, The sorting and deposition of allochthonous plant material in a modern environment at Silwood Lake, Silwood Park, Berkshire, England, U.S. Geological Survey Professional Paper no. 1143, 77 p.
97. SPICER, R.A., 1989, The formation and interpretation of plant fossil assemblages: Advances in Botanical Research, v. 16, p. 96-191.
98. SPICER, R.A., and GREER, A.G., 1986, Plant taphonomy in fluvial and lacustrine systems, in Gastaldo, R.A., organizer, and Broadhead, T.W., ed., Land Plants: Notes for a Short Course: University of Tennessee, Department of Geological Sciences Studies in Geology 15, Knoxville, p. 10-26.
99. SPICER, R.A., and PARRISH, J.T., 1986, Paleobotanical evidence for cool North Polar climates in middle Cretaceous (Albian-Cenomanian) time: Geology, v. 14, p. 703-706.
100. STANISTREET, I.G., CAIRNCROSS, B., and MCCARTHY, T.S., 1993, Low sinuosity and meandering bedload rivers of the Okavango fan: Confinement by vegetated levees without fine sediment: Sedimentary Geology, v. 85, p. 135-156.
101. STIPANICIC, P.N., and BONAPARTE, J.F., 1979, Cuenca triásica de Ischigualasto-Villa Union (Provincias de La Rioja y San Juan), in Turner, J.C., ed., Segundo Simposio de Geología Regional Argentina: Academia Nacional de Ciencias, Córdoba, v. 1, p. 523-575.
102. 18O compositions: Geology, v. 30, p. 1127-1130.
103. TABOR, N.J., MONTAÑEZ, I.P., KELSO, K.A., CURRIE, B.S., SHIPMAN, T.A., and COLOMBI, C.E., 2006, Late Triassic soil catena: Landscape and climate controls on paleosol morphology and chemistry across the Carnian-age Ischigualasto-Villa Union basin, northwestern Argentina, in Alonso-Zarza, A.M., and Tanner, L.H., eds., Paleoenvironmental Record and Applications of Calcretes and Palustrine Carbonates: Geological Society of America Special Paper, v. 416, p. 17-42.
104. TABOR, N.J., MONTAÑEZ, I.P., ZIERENBERG, R., and CURRIE, B.S., 2004, Mineralogical and geochemical evolution of a basalt-hosted fossil soil (Late Triassic, Ischigualasto Formation, northwest Argentina): Potential for paleoenvironmental reconstruction: Geological Society of America Bulletin, v. 116, p. 1280-1293.
105. TONG, J., and PARRISH, J.T., 1999, The Pangean megamonsoon and climate change in South China during the Triassic (abs.), Proceedings of the International Conference on Pangea and the Paleozoic-Mesozoic Transition: China University of Geosciences Press, Wuhan, China, p. 152.
106. TRAMP, K.L., SOREGHAN, G.S., and ELMORE, R.D., 2004, Paleoclimatic inferences from paleopedology and magnetism of the Permian Maroon Formation loessite, Colorado, USA: Geological Society of America Bulletin, v. 116, p. 671-686.
107. TUCKER, M.E., and BENTON, M.J., 1982, Triassic environments, climates and reptile evolution: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 40, p. 361-379.
108. ULIANA, M.A., and BIDDLE, K.T., 1988, Mesozoic-Cenozoic paleogeographic and geodynamic evolution of southern South America: Revista Brasiliera de Geosciencias, v. 18, p. 172-190.
109. URLICS, M., 1974, Zur Stratigraphie und Ammonitenfauna der cassianer Schichten von Cassian (Dolomiten/Italien): Schriftenreihe der Erdwissenschaftlichen Kommission der Österreichischen Akademie der Wissenschaften, v. 2, p. 45-72.
110. VALDES, P.J., and SELLWOOD, B.W., 1992, A palaeoclimate model for the Kimmeridgian: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 95, p. 45-72.
111. VEEVERS, J.J., POWELL, C.M., COLLINSON, J.W., and LóPEZ-GAMUNDÍ, O.R., 1994, Synthesis, in Veevers, J.J., and Powell, C.M., eds., Permian-Triassic Pangean Basins and Foldbelts along the Panthalassan Margin of Gondwanaland: Geological Society of America, Memoirs, v. 184, p. 331-353.
112. VISSCHER, H., and VAN DER ZWAN, C.J., 1981, Palynology of the circum-Mediterranean Triassic: Phytogeographical and palaeoclimatological implications: Geologische Rundschau, v. 70, p. 625-634.
113. VOLKHEIMER, W., 1969, Palaeoclimatic evolution in Argentina and relations with other regions of Gondwana, in Amos, A.J., ed., Gondwana Stratigraphy (1st International Union of Geological Sciences Gondwana Symposium, 1967), Earth Sciences Series, v. 2, UNESCO, Paris, pp. 551-587.
114. WILLIS, B.J., 1993, Interpretation of bedding geometry within ancient point-bar deposits, in Marzo, M., and Puigdefábregas, C., ed., Alluvial Sedimentation: International Association of Sedimentologists, Special Publications, no. 17, Blackwell, Oxford, UK, p. 101-114.
115. WING, S.L., and DIMICHELE, W.A., 1992, Ecological characterization of fossil plants, in Behrensmeyer, A.K., Damuth, J.D., DiMichele, W.A., Potts, R., Sues, H.-D., and Wing, S.L., eds., Terrestrial Ecosystems through Time: University of Chicago Press, Chicago, p. 139-180.
116. ZAMUNER, A.B., ZAVATTIERI, A.M., ARTABE, A.E., and MOREL, E.M. , 2001, Paleobotánica, in Artabe, A.E., Morel, E.M., and Zamuner, A.B., eds., El Sistema Triásico en la Argentina: Fundación Museo de La Plata "Francisco Pascasio Moreno," La Plata, Argentina, p. 143-184.