Vol. 14 Núm. 2 (1997)

-Prefacio- Número especial: Taller Internacional sobre la Geología del Noroeste de Sonora.

George D. Stanley, Jr., Carlos M. González-León

iii

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Stratigraphy and regional significance of Mississippian to Jurassic rocks in Sierra Santa Teresa, Sonora, Mexico

John H. Stewart, Ricardo Amaya-Martínez, Robert G. Stamm, Bruce R. Wardlaw, George D. Stanley, Jr, Calvin H. Stevens

115-135

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Sequence stratigraphy and paleogeographic setting of the Antimonio Formation (Late Permian-Early Jurassic), Sonora, Mexico

Carlos M. González-León

136-148

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Permian-Triassic boundary at El Antimonio, Sonora, Mexico

Spencer G. Lucas, Barry S. Kues, John W. Estep, Carlos M. González-León

149-154

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Middle Triassic ammonites from Sonora, México

John W. Estep, Spencer G. Lucas, Carlos M. González-León

155-159

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Norian sponge and coral biostromes in the Antimonio Formation, northwestem Sonora, Mexico

David H. Goodwin, George D. Stanley, Jr

160-166

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Late Triassic (Norian-Rhaetian) bivalves from the Antimonio Formation, northwestem Sonora, Mexico

Christopher A. McRoberts

167-177

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Late Triassic and Early Jurassic bivalves from Sonora, Mexico

Susana E. Damborenea, Carlos M. González-León

178-201

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New Late Triassic scleractinian corals from the Antimonio Formation, northwestem Sonora, Mexico

George D. Stanley Jr, Carlos M. González-León

202-207

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Relationships and differences between the Triassic ammonoid successions of northwestem Sonora, Mexico, and west-central Nevada, U.S.A.

María Eugenia Gómez-Luna, Ángel Martínez-Cortés

208-218

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Mesozoic brachiopods of Mexico -a review and some comments on their paleobiogeographic affinities and paleoecology

Michael R. Sandy

219-224

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How old is the Triassic flora of Sonora and Tamaulipas and news on Leonardian floras in Puebla and Hidalgo, Mexico

Reinhard Weber

225-243

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Petrogenesis and tectonic evolution of central Mexico during Triassic-Jurassic time

Elena Centeno-García, Gilberto Silva-Romo

244-260

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