Download or read book Placodermi written by Robert Howland Denison and published by . This book was released on 1978 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Placodermi of the Upper Devonian of East Greenland written by Erik Andersson Stensiö and published by . This book was released on 1934 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Estonian Academy of Sciences Geology written by and published by . This book was released on 1993 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Collected papers written by Erik Andersson Stensiö and published by . This book was released on 1922 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multilingual Thesaurus of Geosciences written by G. N. Rassam and published by Elsevier. This book was released on 2013-10-22 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesaurus is presented in six languages, English, French, German, Italian, Russian and Spanish, and sponsored by the International Council for Scientific and Technical Information (ICSTI) and the International Union of Geological Sciences (IUGS). There is a main list of approximately 5000 key terms together with indexes and translations which include a specific linguistic index and a field index in which key terms have been classified by field.

Download or read book Learning and Emotion Evolutionary processes written by Peter J. Livesey and published by Psychology Press. This book was released on 1986 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1986. Routledge is an imprint of Taylor & Francis, an informa company.

Download or read book From Clone to Bone written by Robert J. Asher and published by Cambridge University Press. This book was released on 2012-10-18 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Top researchers show how molecular biology can inform paleontology, directly and indirectly, to better understand life's past.

Download or read book The Downtonian and Devonian Vertebrates of Spitsbergen Family Cephalaspidae A text B plates 1927 written by Erik Andersson Stensiö and published by . This book was released on 1927 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chordate Zoology written by P.S.Verma and published by S. Chand Publishing. This book was released on 1965 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: FOR B.Sc & B.Sc.(Hons) CLASSES OF ALL INDIAN UNIVERSITIES AND ALSO AS PER UGC MODEL CURRICULUMN Contents: CONTENTS:Protochordates:Hemicholrdata 1.Urochordata Cephalochordata Vertebrates : Cyclostomata 3. Agnatha, Pisces Amphibia 4. Reptilia 5. Aves Mammalia 7 Comparative Anatomy:lntegumentary System 8 Skeletal System Coelom and Digestive System 10 Respiratory System 11. Circulatory System Nervous System 13. Receptor Organs 14 Endocrine System 15 Urinogenital System 16 Embryology Some Comparative Charts of Protochordates 17 Some Comparative Charts of Vertebrate Animal Types 18 Index.

Download or read book Skrifter Om Svalbard Og Nordishavet written by Norsk polarinstitutt and published by . This book was released on 1927 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evolutionary Biology written by Max K. Hecht and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fifteen volumes and one supplement have now appeared in the series known as Evolutionary Biology. The editors continue to seek critical reviews, original papers, and commentaries on controversial topics. It is our aim to publish papers primarily of greater length and depth than those normally published by society journals and quarterlies. The editors make every attempt to solicit manuscripts on an international scale and to see that no facet of evolutionary biology-classical or modern-is slighted. Manuscripts should be sent to anyone of the following: Max K. Hecht, Department of Biology, Queens College of the City University of New York, Flushing, New York 11367; Bruce Wallace, Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061; Ghillean T. Prance, New York Botanical Garden, Bronx, New York 10458. The Editors vII Contents 1. Patterns of Neotropical Plant Species Diversity . . . . . . . . . . . . . . . . . . . . . . 1 Alwyn H. Gentry Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I Sites and Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Sample Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Structural Trends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Community Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Floristic Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Dispersal Ecology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Pollination Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Appendix. Sites and Communities Studied . . . . . . . . . . . . . . . . . . . . . . . . . . 50 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 2. Evolution on a Petri Dish: The Evolved fJ-Galactosidase System as a Model for Studying Acquisitive Evolution in the Laboratory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ••. . . . . . . . . . . . . . . . . . . 85 Barry G. Hall Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Approaches to Molecular Evolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 The Descriptive Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 The Experimental Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Mechanisms for the Acquisition of New Genetic Material. . . . . 97 The EBG System a s a Model for Acquisitive Evolution . . . . . . . 98 The Unevolved Enzyme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Download or read book Convergent Evolution on Earth written by George R. McGhee, Jr. and published by MIT Press. This book was released on 2019-10-29 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of patterns of convergent evolution on Earth that suggests where we might look for similar convergent forms on other planets. Why does a sea lily look like a palm tree? And why is a sea lily called a “lily” when it is a marine animal and not a plant? Many marine animals bear a noticeable similarity in form to land-dwelling plants. And yet these marine animal forms evolved in the oceans first; land plants independently and convergently evolved similar forms much later in geologic time. In this book, George McGhee analyzes patterns of convergent evolution on Earth and argues that these patterns offer lessons for the search for life elsewhere in the universe. Our Earth is a water world; 71 percent of the earth's surface is covered by water. The fossil record shows that multicellular life on dry land is a new phenomenon; for the vast majority of the earth's history—3,500 million years of its 4,560 million years of existence—complex life existed only in the oceans. Explaining that convergent biological evolution occurs because of limited evolutionary pathways, McGhee examines examples of convergent evolution in forms of feeding, immobility and mobility, defense, and organ systems. McGhee suggests that the patterns of convergent evolution that we see in our own water world indicate the potential for similar convergent forms in other water worlds. We should search for extraterrestrial life on water worlds, and for technological life on water worlds with continental landmasses.

Download or read book Major Histocompatibility Complex written by M. Kasahara and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every biological system is the outcome of evolution and has a history all its own. This history dictates how the system works and why it has certain properties and not others. This is why we need to study not only the structure and function, but also the history of the system. This argument undoubtedly applies to the study of the immune system and also to the study of the major histocompatibility complex (MHC). Since 1989, researchers of various scientific disciplines who share a deep inter est in MHC evolution have held a meeting every two years to discuss their latest research developments, exchange ideas, and foster friendship. Together with my colleagues Drs. Naoyuki Takahata and Yoko Satta, I organized the Sixth Interna tional Workshop on MHC Evolution in Hayama, Japan, May 25-29, 1999. This volume is the proceedings of that conference. It covers diverse topics pertinent to MHC evolution, including the origin of the adaptive immune system, the organi zation of the MHC in humans and other model vertebrates, MHC-parasite co evolution, and the nature and origin of MHC polymorphism. I hope that this book will be of interest not only for MHC researchers and immunologists, but also for other specialists who are interested in the evolution of biological systems in gen eral.

Download or read book Skrifter om Svalbard og Nordishavet written by and published by . This book was released on 1927 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Meaning of Evolution written by George Gaylord Simpson and published by Yale University Press. This book was released on 1949-01-01 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: A world-famous scientist presents a synthesis of modern views on the principles of evolution. The result of twenty-five years of research, The Meaning of Evolution follows the rise and fall of the dynasties of life through the 2,000,000,000 years of the history of earth. It explains what forces have been acting to bring about evolution and re-examines human aims, values, and duties in the light of what science discloses of the nature of man and of his place in the history of life. The clearest and soundest exposition of the nature of the evolutionary process that has yet been written...The book may be read with equal profit and pleasure by the general reader, the student, and the expert.-Ashley Montagu, Isis This book is, without question, the best general work on the meaning of evolution to appear in our time.-The New York Times

Download or read book Evolution and Development of Fishes written by Zerina Johanson and published by Cambridge University Press. This book was released on 2019-01-10 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish, or lower vertebrates, occupy the basal nodes of the vertebrate phylogeny, and are therefore crucial in interpreting almost every feature of more advanced vertebrates, including amphibians, reptiles, birds and mammals. Recent research focuses on combining evolutionary observations - primarily from the fish fossil record - with developmental data from living fishes, in order to better interpret evolutionary history and vertebrate phylogeny. This book highlights the importance of this research in the interpretation of vertebrate evolution, bringing together world-class palaeontologists and biologists to summarise the most interesting, current and cutting-edge topics in fish evolution and development. It will be an invaluable tool for researchers in early vertebrate palaeontology and evolution, and those particularly interested in the interface between evolution and development.

Download or read book Modern Text Book of Zoology Vertebrates written by R. L. Kotpal and published by Rastogi Publications. This book was released on 2010 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt: