The Bug Creek Problem And The Cretaceous Tertiary Transition At Mcguire Creek Montana
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The Bug Creek Problem and the Cretaceous Tertiary Transition at McGuire Creek Montana
Author | : Donald L. Lofgren |
Publsiher | : Univ of California Press |
Total Pages | : 204 |
Release | : 1995-08-31 |
Genre | : Science |
ISBN | : 0520915798 |
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Bug Creek assemblages from Montana, transitional in composition between typical Cretaceous and Paleocene vertebrate faunas, are critical to K-T extinction debates because they have been used to support both gradual and catastrophic K-T extinction scenarios. Geological and palynological data from McGuire Creek indicate that Bug Creek assemblages are Paleocene and restricted to channel fills entrenched into older sediments, suggesting that the Cretaceous component of the assemblage was reworked. Thus, the author concludes, "Paleocene dinosaurs" are an illusion and the K-T survival rate of mammals is low because the presence of Cretaceous mammals in Bug Creek assemblages is also the result of reworking.
The Bug Creek Problem and the Cretaceous tertiary Transition at McGuire Creek Montana
Author | : Donald Lionel Lofgren |
Publsiher | : Unknown |
Total Pages | : 860 |
Release | : 1990 |
Genre | : Electronic Book |
ISBN | : UCAL:C3365175 |
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Through the End of the Cretaceous in the Type Locality of the Hell Creek Formation in Montana and Adjacent Areas
Author | : Gregory P. Wilson,William A. Clemens,John R. Horner,Joseph H. Hartman |
Publsiher | : Geological Society of America |
Total Pages | : 396 |
Release | : 2014-01-21 |
Genre | : Science |
ISBN | : 9780813725031 |
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"The chapters represent a surge of field and laboratory research activity, illustrating the impacts of new and refined methods and tools. This volume explores geologic and biologic history preserved in the strata bounding the Cretaceous-Paleogene boundary"--Provided by publisher.
The Oligocene Haynes Creek Flora of Eastern Idaho
Author | : Daniel I. Axelrod |
Publsiher | : Univ of California Press |
Total Pages | : 164 |
Release | : 1998-07-31 |
Genre | : History |
ISBN | : 0520098242 |
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This flora of 70 species is dominated by deciduous trees, many with descendants in China. Precipitation was 890 mm, mean annual temperature 12.5°C, the annual range 10°C, and freezing rare. Elevation was about 1000 meters. Comparison with the Horse Prairie flora, 30 miles east and across the present continental divide, indicates that the divide was then low and discontinuous, with warmer climate to the east.
New Perspectives on Horned Dinosaurs
Author | : Michael J. Ryan,Brenda J. Chinnery-Allgeier,David A. Eberth |
Publsiher | : Indiana University Press |
Total Pages | : 658 |
Release | : 2010 |
Genre | : Nature |
ISBN | : 9780253353580 |
Download New Perspectives on Horned Dinosaurs Book in PDF, Epub and Kindle
Easily distinguished by the horns and frills on their skulls, ceratopsians were one of the most successful of all dinosaurs. This volume presents a broad range of cutting-edge research on the functional biology, behavior, systematics, paleoecology, and paleogeography of the horned dinosaurs, and includes descriptions of newly identified species.
The Complete Dinosaur
Author | : M. K. Brett-Surman,Thomas R. Holtz,James O. Farlow |
Publsiher | : Indiana University Press |
Total Pages | : 1160 |
Release | : 2012-06-27 |
Genre | : Science |
ISBN | : 9780253008497 |
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A new edition of the illustrated compendium that is “a gift to serious dinosaur enthusiasts” (Science). What do we know about dinosaurs, and how do we know it? How did they grow, move, eat, and reproduce? Were they warm-blooded or cold-blooded? How intelligent were they? How are the various groups of dinosaurs related to each other, and to other kinds of living and extinct vertebrates? What can the study of dinosaurs tell us about the process of evolution? And why did typical dinosaurs become extinct? These questions and more are addressed in this new, expanded edition of The Complete Dinosaur. Written by leading experts on the “fearfully great” reptiles, the book covers what we have learned about dinosaurs, from the earliest discoveries to the most recent controversies. Where scientific contention exists, the editors have let the experts agree to disagree. The Complete Dinosaur is a feast for serious dinosaur lovers, from the enthusiastic amateur to the professional paleontologist. Praise for the first edition: “An excellent encyclopedia that serves as a nice bridge between popular and scholarly dinosaur literature.” —Library Journal (starred review) “Stimulating armchair company for cold winter evenings. . . . Best of all, the book treats dinosaurs as intellectual fun.” —New Scientist “Useful both as a reference and as a browse-and-enjoy compendium.” —Natural History “Copiously illustrated and scrupulously up-to-date.” —Publishers Weekly “The amount of information in [these] pages is amazing. This book should be on the shelves of dinosaur freaks as well as those who need to know more about the paleobiology of extinct animals. It will be an invaluable library reference.” —American Reference Books Annual
The Hell Creek Formation and the Cretaceous Tertiary Boundary in the Northern Great Plains
Author | : Joseph Herbert Hartman,Kirk R. Johnson,Douglas J. Nichols |
Publsiher | : Geological Society of America |
Total Pages | : 530 |
Release | : 2002 |
Genre | : Science |
ISBN | : 0813723612 |
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Contributions to Geology
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 702 |
Release | : 1991 |
Genre | : Geology |
ISBN | : RUTGERS:39030025472228 |
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