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Paleobiology and Paleoenvironments of Eocene Rocks. McMurdo Sound, East Antarctica. Antarctic Research Series

  • ID: 2489302
  • Book
  • Region: Antarctica
  • 372 Pages
  • John Wiley and Sons Ltd
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Published by the American Geophysical Union as part of the Antarctic Research Series, Volume 76.

Michael K. Brett–Surman, George Washington University, observed that, "being a paleontologist is like being a coroner except all the witnesses are dead and all the evidence has been left out in the rain for 65 million years." In the study of paleontology in Antarctica it could also be added that, if not left out in the rain, most of the evidence remains buried beneath several thousand feet of ice. Elucidating the geologic history of the Antarctic continent will always be plagued with this problem. Nonetheless, numerous clever means have been used to extract as much information as is possible, and as presented in this volume. In this light, one of the most intriguing time intervals in Antarctic history is the Eocene Epoch. During this time, the climatic conditions deteriorated rapidly from the so–called "Greenhouse" conditions that dominated Earth′s conditions from mid–Mesozoic time through the early Cenozoic to the "Icehouse" conditions that have dominated the climate since that time. Unfortunately, the record of Eocene rocks on the continent is sparse. On the Antarctic Peninsula, specifically on Seymour Island, a robust record of Eocene rocks and fossils has provided virtually all the information we possess about this time interval. Thus the discovery and description of Eocene erratic boulders in morainal deposits in the McMurdo Sound region provides only the second site on the entire continent where we can study the paleontology of this time interval. In all likelihood, the description of erratics containing fossils from any other place in the world would warrant little study and would attract even less attention. However, when most of the vast area of Antarctica lies beneath ice and when clues to the nature of the crust of that part of the continent can be extracted only from study of erratics, the discovery carries with it some excitement.
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PrefaceJeffrey D. Stilwell and Rodney M. Feldmann xi

The McMurdo Erratics: Introduction and OverviewDavid M. Harwood and Richard H. Levy  1

Glacial Geologya nd Origin of Fossiliferous–Erratic–BearinMgo raines,S outhernM cMurdo Sound, Antarctica: An Alternative Ice Sheet HypothesisGary S. Wilson 19

Sedimentary Lithofacies of the McMurdo Sound ErraticsRichard H. Levy and David M. Harwood 39

Clay Mineral Composition of Glacial Erratics, McMurdo SoundMary Anne Holmes 63

Marine Diatom Assemblages from Eocene and Younger Erratics, McMurdo Sound, AntarcticaDavid M. Harwood and Steven M. Bohaty 73

Ebridian and Silicoflagellate Biostratigraphy from Eocene McMurdo Erratics and the Southern OceanSteven M. Bohaty and David M. Harwood 99

Spores and Pollen from the McMurdo Sound Erratics, AntarcticaRosemary A. Askin 161

Tertiary Marine Palynomorphs from the McMurdo Sound Erratics, AntarcticaRichard H. Levy and David M. Harwood 183

Eocene Plant Macrofossils from Erratics, McMurdo Sound, AntarcticaMike Pole, Bob Hill and David M. Harwood 243

Fossil Wood from Eocene High Latitude Forests McMurdo Sound, AntarcticaJane E. Francis 253

Eocene Mollusca (Bivalvia, Gastropoda and Scaphopoda) from McMurdo Sound: Systematica s d
Paleoecologic SignificanceJeffrey D. Stilwell 261

Bryozoan Fragments from Eocene Glacial Erratics of McMurdo Sound, East AntarcticaUrszula Hara 321

Rhynchonellide Brachiopods from Eocene to Earliest Oligocene Erratics in the McMurdo
Sound Region, Antarctica
Daphne E. Lee and Jeffrey D. Stilwell 325

A New Species of Austrobalanus (Cirripedia, Thoracicia) from Eocene Erratics, Mount Discovery,  McMurdo Sound, East AntarcticaJohn St. J. S. Buckeridge  329

Callichirus symmetricus (Decapoda: Thalassinoidea) and Associated Burrows, Eocene, AntarcticaCarrie E. Schweitzer and Rodney M. Feldmann 335

Fish Remains from the Eocene of Mount Discovery, East AntarcticaDouglas H. Long and Jeffrey D. Stilwell 349

A Probable Piscivorous  Crocodile from Eocene Deposits of McMurdo Sound, East AntarcticaPaul M.A. Willis and Jeffrey D. Stilwell 355

The First Record of a Fossil Bird from East AntarcticaCraig M. Jones 359

Paleobiogeographic Synthesis of the Eocene Macrofauna from McMurdo Sound, AntarcticaJeffrey D. Stilwell and William J. Zinsmeister  365

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Jeffrey D. Stilwell
Rodney M. Feldmann
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