Download or read book SMITHIAN EARLY TRIASSIC AMMONOIDS FROM CRITTENDEN SPRINGS ELKO COUNTY NEVADA TAXONOMY BIOSTRATIGRAPHY AND BIOGEOGRAPHY written by JAMES F. JENKS and published by New Mexico Museum of Natural History and Science. This book was released on 2018 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Smithian Early Triassic ammanoids from Crittenden Springs Elko County Nevada Implications for taxonomy biostratigraphy and biogeography written by James F. Jenks and published by New Mexico Museum of Natural History and Science. This book was released on 2010-01-01 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Triassic of the American West written by Spencer G. Lucas and published by New Mexico Museum of Natural History and Science. This book was released on 2007-01-01 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cephalopods Present and Past New Insights and Fresh Perspectives written by Neil H. Landman and published by Springer Science & Business Media. This book was released on 2007-09-09 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together international scientists who focus on present-day and fossil cephalopods, ranging broadly from Paleozoic ammonoids to today's octopods. It covers systematics and evolution; hard- and soft part morphology; and ecology, biogeography, and taphonomy. The book also includes new evidence for the existence of an ink sac in fossil ammonoids and features the first record of an in-depth study of octopus ecology in Alaska.
Download or read book Paleontology and Neontology of Cephalopods written by M. R. Clarke and published by Elsevier. This book was released on 2013-10-22 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paleontology and Neontology of Cephalopods examines information that throws new light on the evolution of coleoids. This book is part of a multivolume work, The Mollusca, which attempts to provide comprehensive treatment of major areas of molluscan research. The Mollusca is intended to serve several disciplines—zoology, biochemistry, physiology, and paleontology. It will prove useful to researchers and to all others with interests in mollusks. The book begins with a review of the main features of cephalopod evolution. This is followed by separate chapters on the evolution of the gladius in coleoids; the buccal mass of Cephalopoda; beaks of living coleoid Cephalopoda; cephalopod hooks; statoliths of cephalopods; buoyancy and locomotion in recent cephalopods; and evolution of the cephalopod brain and cephalopod statocyst. Subsequent chapters deal with the photophore structure and evolution within the Enoploteuthinae; the interrelationships of genera within the Ommastrephidae; evolutionary pathways traversed by the cephalopod family Cranchiidae; the cephalopod fauna of the European Mediterranean; and the evolution of recent cephalopods.
Download or read book Ammonoid Paleobiology written by Neil H. Landman and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 857 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renowned researchers summarize the current knowledge on ammonoid paleobiology. The book begins with a description of the systematic position of the Ammonoidea within the Cephalopoda, providing the phylogenetic framework for the rest of the book. Following discussions include soft- and hard-part morphology of ammonoids, rate of growth and ontogeny, and taphonomy and ecology. Closing chapters explore the distribution of ammonoids in time and space as well as their extinction at the end of the Cretaceous. With its diverse viewpoints and new material, this resource will benefit researchers and graduate students in paleontology, marine biology, and evolutionary biology.
Download or read book Evolutionary Patterns and Processes written by D. R. Lees and published by Academic Press. This book was released on 1993 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolution is the central theme of all biology. Researcarcch in the many branches of evolutionary study continues to flourish. This book, based on a symposium of the Linnean Society, discusses the diversity in currentevolutionary research. It approaches the subject ambitiously and from several angles, bringing ttogether eminent authors from a variety of disciplines paleontologists traditionally with a macroevolutionary bias, neontologists concentrating on microevolutionary processes, and those studying the very essence ofsses and those studying the very essence of evolution the process of speciation in living organisms. Evolutionary Patterns and Processes will appeal to a broad spectrum of professional biologistsworking in such fields as paleontology, population biology, and evolutionary genetics. Biologists will enjoy chapters by Stephen J. Gould, discovering in the much earlier work of Hugo de Vries parallels with his ideas on punctuational evolution; Guy Bush,considering why there are so many small animals; Peter Sheldon, examining detailed fossil trilobite sequences for evidence of microevolutionary processes and considering models of speciation; as well as others dealing with cytological, ecological, and behavioral processes leading to the evolution of new species. None
Download or read book Nautilus written by W. Bruce Saunders and published by Springer Science & Business Media. This book was released on 2009-12-17 with total page 683 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. 1 Nautilus and Allonautilus: Two Decades of Progress W. Bruce Saunders Department of Geology Bryn Mawr College Bryn Mawr PA 19010 wsaunder@brynmawr. edu Neil H. Landman Division of Paleontology American Museum of Natural History New York, New York 10024 landman@amnh. org When Nautilus: Biology and Paleobiology of a Living Fossil was published in 1987, it marked a milestone in cross-disciplinary collaboration. More than half of the contributing authors (36/65) were paleontologists, many of whom were collaborating with neontological counterparts. Their interest in studying this reclusive, poorly known animal was being driven by a search for clues to the mode of life and natural history of the once dominant shelled cephalopods, through study of the sole surviving genus. At the same time, Nautilus offered an opportunity for neontologists to look at a fundamentally different, phylogenetically basal member of the extant Cephalopoda. It was a w- win situation, combining paleontological deep-time perspectives, old fashioned expeditionary zeal, traditional biological approaches and new techniques. The results were cross-fertilized investigations in such disparate fields as ecology, functional morphology, taphonomy, genetics, phylogeny, locomotive dynamics, etc. As one reviewer of the xxxvi Introduction xxxvii book noted, Nautilus had gone from being one of the least known to one of the best understood of living cephalopods.
Download or read book New Approaches to Speciation in the Fossil Record written by Douglas H. Erwin and published by Columbia University Press. This book was released on 1995 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of case studies that seeks to reexamine the understanding of the speciation patterns that appear in the fossil record through an analysis of the patterns and their presumed processes. In each case, the rigorous techniques of morphological analysis, quantitative genetic analysis, phylogenetic analysis, and sedimentary completeness have been employed.
Download or read book Introduction to Geological Data Analysis written by ARH Swan and published by Wiley-Blackwell. This book was released on 1995-03-29 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike most other sciences, geology does not have a strong tradition of numerical analysis. It is, however, increasingly common for primary geological information to be quantitative rather than descriptive, and analysis of numerical data is now a skill of immense value to any earth scientist. The authors of this book have set out to provide students at undergraduate and graduate level with a thorough grounding in the statistical techniques required in the earth sciences. All the modern statistical methods employed by geologists and geophysicists are covered, with clear worked examples using the type of data the reader is likely to encounter.
