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Author: Gilles Cuny Publisher: ISTE Group ISBN: 1784054003 Category : Chondrichthyes Languages : fr Pages : 135
Book Description
Les chondrichthyens possèdent des particularités anatomiques uniques chez les vertébrés actuels, en particulier un squelette entièrement cartilagineux et une dentition renouvelée en permanence. Ces caractéristiques rendent leur fossilisation difficile, et par conséquent leur registre fossile est principalement constitué d’un grand nombre de dents isolées. L’étude de leur dentition revêt donc un intérêt primordial dans la compréhension de l’évolution du groupe. Au-delà de la morphologie dentaire, la structure des tissus composant la dentition s’est révélée une source importante d’information, parfois difficile à interpréter, sur les habitudes alimentaires et la paléobiologie de ces animaux. Cet ouvrage a pour but de passer en revue les théories existantes dans ce domaine d’étude, et d’apporter de nouveaux éléments, basés sur des études récentes, pour tenter d’éclaircir certaines questions demeurant mal résolues quant à l’utilisation et au potentiel de l’étude des tissus dentaires des poissons cartilagineux.
Author: Gilles Cuny Publisher: ISTE Group ISBN: 1784054003 Category : Chondrichthyes Languages : fr Pages : 135
Book Description
Les chondrichthyens possèdent des particularités anatomiques uniques chez les vertébrés actuels, en particulier un squelette entièrement cartilagineux et une dentition renouvelée en permanence. Ces caractéristiques rendent leur fossilisation difficile, et par conséquent leur registre fossile est principalement constitué d’un grand nombre de dents isolées. L’étude de leur dentition revêt donc un intérêt primordial dans la compréhension de l’évolution du groupe. Au-delà de la morphologie dentaire, la structure des tissus composant la dentition s’est révélée une source importante d’information, parfois difficile à interpréter, sur les habitudes alimentaires et la paléobiologie de ces animaux. Cet ouvrage a pour but de passer en revue les théories existantes dans ce domaine d’étude, et d’apporter de nouveaux éléments, basés sur des études récentes, pour tenter d’éclaircir certaines questions demeurant mal résolues quant à l’utilisation et au potentiel de l’étude des tissus dentaires des poissons cartilagineux.
Author: Gilles Cuny Publisher: Elsevier ISBN: 0081011407 Category : Science Languages : en Pages : 140
Book Description
Chondrichthyans possess unique anatomical features compared to other vertebrates, in particular a fully cartilaginous skeleton and a permanently renewed dentition. These characteristics make the fossilization of whole bodies difficult and consequently their fossil record consists mainly of a large number of isolated teeth. The study of their dentition is therefore of primary interest for our understanding of the evolution of this group. Beyond the dental morphology, the structure of the tissues composing the dentition has proved an important source of information, sometimes difficult to interpret, on the eating habits and the paleobiology of these animals. This book makes a thorough review of the existing theories in this field of research as well as introducing new elements from more recent studies. Through close reference to the fossil record of ancient selachians it examines what the study of dental tissue in cartilaginous fish can tell us about the evolution and the past biology of these animals, as well as what we can learn about the evolution of teeth themselves. - Focuses on the evolution of the teeth microstructure of the cartilaginous fishes - Offers a complete overview of the terminology used to describe fish tooth microstructures - Offers an overview of convergent enameloid microstructures between actinopterygians (ray-finned fishes) and chondrichthyans to enable better understanding of the evolution of this kind of tissue - Highlights the importance of isolated fossil teeth to understand the evolution of whole clades - Discusses the use of isolated fossil teeth to understand the evolution of whole clades
Author: Rudolf A. Raff Publisher: University of Chicago Press ISBN: 022625657X Category : Science Languages : en Pages : 545
Book Description
Rudolf Raff is recognized as a pioneer in evolutionary developmental biology. In their 1983 book, Embryos, Genes, and Evolution, Raff and co-author Thomas Kaufman proposed a synthesis of developmental and evolutionary biology. In The Shape of Life, Raff analyzes the rise of this new experimental discipline and lays out new research questions, hypotheses, and approaches to guide its development. Raff uses the evolution of animal body plans to exemplify the interplay between developmental mechanisms and evolutionary patterns. Animal body plans emerged half a billion years ago. Evolution within these body plans during this span of time has resulted in the tremendous diversity of living animal forms. Raff argues for an integrated approach to the study of the intertwined roles of development and evolution involving phylogenetic, comparative, and functional biology. This new synthesis will interest not only scientists working in these areas, but also paleontologists, zoologists, morphologists, molecular biologists, and geneticists.
Author: William C. Hamlett Publisher: JHU Press ISBN: 9780801860485 Category : Nature Languages : en Pages : 542
Book Description
Successor to the classic work in shark studies, The Elasmobranch Fishes by John Franklin Daniel (first published 1922, revised 1928 and 1934), Sharks, Skates, and Rays provides a comprehensive and up-to-date overview of elasmobranch morphology. Coverage has been expanded from anatomy to include modern information on physiology and biochemistry. The new volume also provides equal treatment for skates and rays. The authors present general introductory material for the relative novice but also review the latest technical citations, making the book a valuable primary reference resource. More than 200 illustrations supplement the text.
Author: David Ebert Publisher: Univ of California Press ISBN: 0520222652 Category : History Languages : en Pages : 300
Book Description
"Ebert has herein assembled an enormous body of knowledge about California's 43 shark species ranging from shark and human behavior to taxonomic minutiae, along with up-to-date explanations of their ecology, status and fisheries. More importantly, his Herculean effort includes the often-overlooked 25 species of skates, rays and chimaeras. That, along with the fine illustrations of Mat Squillante, should answer any question that a student, diver, natural history buff, or recreational or commercial fisher might ask."—John E. McCosker, coauthor of Great White Shark "The timing of this publication is ideal given the status of some of California's elasmobranch populations and the need for a deeper understanding of their biology, ecology, and fishery management. The book is a comprehensive treatment—if one wants to find out the latest information on any species of shark or ray off California, this is the place to go. An outstanding work!"—Gregor M. Cailliet, Professor, Moss Landing Marine Laboratories, and Director, Pacific Shark Research Center
Author: Brian K. Hall Publisher: Springer Science & Business Media ISBN: 9780412785801 Category : Science Languages : hr Pages : 528
Book Description
Although evolutionary developmental biology is a new field, its origins lie in the last century; the search for connections between embryonic development (ontogeny) and evolutionary change (phylogeny) has been a long one. Evolutionary developmental biology is however more than just a fusion of the fields of developmental and evolutionary biology. It forges a unification of genomic, developmental, organismal, population and natural selection approaches to evolutionary change. It is concerned with how developmental processes evolve; how evolution produces novel structures, functions and behaviours; and how development, evolution and ecology are integrated to bring about and stabilize evolutionary change. The previous edition of this title, published in 1992, defined the terms and laid out the field for evolutionary developmental biology. This field is now one of the most active and fast growing within biology and this is reflected in this second edition, which is more than twice the length of the original and brought completely up to date. There are new chapters on major transitions in animal evolution, expanded coverage of comparative embryonic development and the inclusion of recent advances in genetics and molecular biology. The book is divided into eight parts which: place evolutionary developmental biology in the historical context of the search for relationships between development and evolution; detail the historical background leading to evolutionary embryology; explore embryos in development and embryos in evolution; discuss the relationship between embryos, evolution, environment and ecology; discuss the dilemma for homology of the fact that development evolves; deal with the importance of understanding how embryos measure time and place both through development and evolutionarily through heterochrony and heterotrophy; and set out the principles and processes that underlie evolutionary developmental biology. With over one hundred illustrations and photographs, extensive cross-referencing between chapters and boxes for ancillary material, this latest edition will be of immense interest to graduate and advanced undergraduate students in cell, developmental and molecular biology, and in zoology, evolution, ecology and entomology; in fact anyone with an interest in this new and increasingly important and interdisciplinary field which unifies biology.
Author: Jonathan Bard Publisher: CRC Press ISBN: 1000483215 Category : Science Languages : en Pages : 534
Book Description
Evolution is the single unifying principle of biology and core to everything in the life sciences. More than a century of work by scientists from across the biological spectrum has produced a detailed history of life across the phyla and explained the mechanisms by which new species form. This textbook covers both this history and the mechanisms of speciation; it also aims to provide students with the background needed to read the research literature on evolution. Students will therefore learn about cladistics, molecular phylogenies, the molecular-genetical basis of evolutionary change including the important role of protein networks, symbionts and holobionts, together with the core principles of developmental biology. The book also includes introductory appendices that provide background knowledge on, for example, the diversity of life today, fossils, the geology of Earth and the history of evolutionary thought. Key Features Summarizes the origins of life and the evolution of the eukaryotic cell and of Urbilateria, the last common ancestor of invertebrates and vertebrates. Reviews the history of life across the phyla based on the fossil record and computational phylogenetics. Explains evo-devo and the generation of anatomical novelties. Illustrates the roles of small populations, genetic drift, mutation and selection in speciation. Documents human evolution using the fossil record and evidence of dispersal across the world leading to the emergence of modern humans.
Author: Philip C J Donoghue Publisher: CRC Press ISBN: 9780367394738 Category : Languages : en Pages : 296
Book Description
Determining the precise timing for the evolutionary origin of groups of organisms has become increasingly important as scientists from diverse disciplines attempt to examine rates of anatomical or molecular evolution and correlate intrinsic biological events to extrinsic environmental events. Molecular clock analyses indicate that many major groups are twice as old, or more, than a literal reading of the fossil record attests, implying that the fossil record is incomplete. Few paleontologists agree that the fossil record is inadequate, arguing instead that our understanding of the molecular clock is far from ideal. Telling the Evolutionary Time: Molecular Clocks and the Fossil Record represents a discussion between molecular biologists and paleontologists, in which they investigate the significance of competing sources of data, explain the nature of molecular clocks and the fossil record, and strive to develop compromise models that incorporate contradictory opinions. These are presented as a series of case studies dealing with many of the most important groups of complex organisms, such as protists, land plants, flowering plants, complex animals, chordates, vertebrates, tetrapods, and modern birds. Bringing fresh insight and various perspectives to a complicated argument, this book assembles all sides of the debate into one comprehensive text. It is a significant volume for research scientists and advanced students across the field of evolutionary biology.
Author: Gilles Cuny
Author: Gilles Cuny
Author: Henri Cappetta
Author: Gilles Cuny
Author: Geological Survey (U.S.)
Author: Rudolf A. Raff
Author: William C. Hamlett
Author: David Ebert
Author: Brian K. Hall
Author: Jonathan Bard
Author: Philip C J Donoghue