Geological Society of America

1:45 PM

THE ORIGIN OF A C4 SPECIES? EVOLUTION AND ATMOSPHERIC INTERACTIONS IN C3 AND C4 SUBTYPES OF ALLOTEROPSIS SEMIALATA

Colin P. Osborne, University of Sheffield, Sheffield, N/A and Doug G. Ibrahim, University of Sheffield, Sheffield, N/A and Matthew E. Gilbert, Rhodes Univ, Grahamstown, N/A and Alida Haasbroek, Rhodes Univ, Grahamstown, N/A and Brad. S. Ripley, Rhodes Univ, Grahamstown, N/A

80426 (Technical Sessions)

2:00 PM

NEOGENE HISTORY OF C4 BIOMASS IN THE GREAT PLAINS, U.S.A

David L. Fox, Univ of Minnesota, Minneapolis, MN and Paul L. Koch, Univ of California, Santa Cruz, Santa Cruz, CA

78098 (Technical Sessions)

2:15 PM

DID DINOSAURS EAT C4 PLANTS DURING THE CRETACEOUS? CARBON ISOTOPE EVIDENCE AND POSSIBLE ECOLOGIC SETTINGS

Henry C. Fricke, Colorado College, Colorado Springs, CO

75102 (Technical Sessions)

2:30 PM

PHYTOLITH EVIDENCE FOR C3 GRASSES FROM LATE MIOCENE “PIKERMIAN” FAUNAS IN THE EASTERN MEDITERRANEAN

Caroline A.E. Strömberg, Swedish Museum of Nat History, Stockholm, N/A and Lars Werdelin, Swedish Museum of Nat History, Stockholm, N/A

78617 (Technical Sessions)

2:45 PM

DISTRIBUTION PATTERNS AND CARBON ACQUISITION PHYSIOLOGY OF THE C4 SHRUBS ATRIPLEX SPP. IN THE SOUTHWESTERN USA ACROSS THE LAST GLACIAL-INTERGLACIAL CYCLE

Peter K. Van de Water, U.S. Geol Survey, Corvallis, OR and Julio L. Betancourt, U.S. Geological Survey, Reston, VA and Steven W. Leavitt, Univ of Arizona, Tucson, AZ

77882 (Technical Sessions)

3:00 PM

MAMMALIAN SPECIES ABUNDANCES AS CLIMATIC INDICATORS IN HALL’S CAVE, TEXAS

Christian O. George, Univ of Texas at Austin, Austin, TX and Dennis R. Ruez, The Univ of Texas at Austin, Austin, TX

78893 (Technical Sessions)

3:30 PM

DIGITAL LEAF PHYSIOGNOMY: CALIBRATION OF A NEW METHOD FOR RECONSTRUCTING CLIMATE FROM FOSSIL PLANTS

Dana L. Royer, Pennsylvania State Univ, University Park, PA and David Janesko, Pennsylvania State Univ, University Park, PA and Peter Wilf, Pennsylvania State Univ, University Park, PA and Elizabeth A. Kowalski, Univ of Florida, Gainesville, FL and David L. Dilcher, Univ of Florida, Gainesville, FL

76290 (Technical Sessions)

3:45 PM

CLIMATE AND MODERN NEOTROPICAL PLANT DISTRIBUTIONS: MACROECOLOGICAL AND PALEOECOLOGICAL IMPLICATIONS

Surangi W. Punyasena, Univ of Chicago, Chicago, IL and Gidon Eshel, Univ of Chicago, Chicago, IL and Jennifer C. McElwain, The Field Museum, Chicago, IL

80534 (Technical Sessions)

4:00 PM

EOCENE PLANT DIVERSITY AT LAGUNA DEL HUNCO AND RÍO PICHILEUFÚ, PATAGONIA, ARGENTINA

Peter Wilf, Pennsylvania State University, University Park, PA and Kirk Johnson, Denver Museum of Nature & Sci, Denver, CO and N. Ruben Cuneo, MEF, Trelew and Maria A. Gandolfo, Cornell University, Ithaca, NY and Michael E. Smith, Univ of Wisconsin- Madison, Madison, WI

73951 (Technical Sessions)

4:15 PM

EOCENE PLANT-INSECT ASSOCIATIONAL DIVERSITY AT LAGUNA DEL HUNCO, PATAGONIA, ARGENTINA

Conrad C. Labandeira, National Museum of Nat History, Washington, DC and Peter Wilf, Pennsylvania State University, University Park, PA and N. Ruben Cuneo, MEF, Trelew and Kirk Johnson, Denver Museum of Nature & Sci, Denver, CO

78721 (Technical Sessions)

4:30 PM

THE EFFECT OF VARYING PO2 ON VERTEBRATE EVOLUTION

John M. VandenBrooks, Yale Univ, New Haven, CT

80705 (Technical Sessions)

4:45 PM

HOW AN INCREASE IN THE MG/CA RATIO OF SEAWATER AFTER THE CRETACEOUS DEPRESSED CHALK PRODUCTION AND CAUSED SOME COCCOLITHOPHORES TO SECRETE HIGH-MG CALCITE

Steven M. Stanley, Johns Hopkins Univ, Baltimore, MD and Justin B. Ries, Johns Hopkins Univ, Baltimore, MD and Lawrence A. Hardie, Johns Hopkins Univ, Baltimore, MD

76987 (Technical Sessions)

5:00 PM

A MULTI DISCIPLINARY APPROACH PROXY FOR CENOMANIAN–TURONIAN (LATE CRETACEOUS) BRACKISH SEAWATER: NORMAL PORE MORPHOMETRICS AND OXYGEN ISOTOPE SIGNATURES OF THE OSTRACODE FOSSOCYTHERIDEA

Neil E. Tibert, Univ of Mary Washington, Fredericksburg, VA and William Patterson, Univ of Saskatchewan, Saskatoon, SK and Laura Odegaard, Univ of Mary Washington, Fredericksburg, VA and Stephanie Tanko, Univ of Mary Washington, Fredericksburg, VA and Gregory Ludvigson, Iowa Geol Survey, Iowa City, IA and Jean-Paul Colin, 3 Impasse des Biroulayres, N/A

80005 (Technical Sessions)

5:15 PM

MIDDLE MIOCENE UPWELLING AND THE EVOLUTION OF THE NORTH PACIFIC FAUNA

David K. Jacobs, Univ California - Los Angeles, Los Angeles, CA and Todd A. Haney, Univ California - Los Angeles, Los Angeles, CA and Kristina D. Louie, Univ California - Los Angeles, Los Angeles, CA

80999 (Technical Sessions)

31 Paleontology III: Life and Climate

Presentations