Download or read book Comparative Microscopic Dental Anatomy in the Petalodontida Chondrichthyes Elasmobranchii written by Rainer Zangerl and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparative Microscopic Dental Anatomy in the Petalodontida Chondrichthyes Elasmobranchii Fieldiana Geology New Series written by H. Frank Joint Author Winter and published by Franklin Classics Trade Press. This book was released on 2018-11-10 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Evolution of Dental Tissues and Paleobiology in Selachians written by Gilles Cuny and published by Elsevier. This book was released on 2018-02-06 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Early Vertebrates written by Philippe Janvier and published by Oxford University Press, USA. This book was released on 1996 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents current knowledge of the early vertebrates--mainly fish, but including some terrestrial creatures--which lived about 250 to 470 million years ago. The work focuses on anatomical and phylogenetic questions, but includes information on fossil discovery and preparation, as well as the analysis of the characteristics from which their relationships may be reconstructed. The author addresses both new and old problems in the evolution of certain anatomical details and deals briefly with the animals' way of life, extinction, and former distribution. The book is the first in its field to use a cladistic approach. For each major vertebrate group, the reader will find a diagram of relationships, or cladogram, with a selection of characters at each node, and a succinct phylogenetic classification.
Download or read book Revised Phylogeny and Functional Interpretation of the Edrioasteroidea Based on New Taxa from the Early and Middle Ordovician of Western Utah written by Thomas Edgar Guensburg and published by . This book was released on 1994 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Palaeozoic Vertebrate Biochronology and Global Marine non marine Correlation written by Alain Blieck and published by . This book was released on 2000 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acta palaeontologica Polonica written by and published by . This book was released on 1956 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Redescription of Paraclupea Chetungensis an Early Clupeomorph from the Lower Cretaceous of Southeastern China written by Mi-man Chang and published by . This book was released on 1997 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Zoological Record written by and published by . This book was released on with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Materials of Marine Origin written by Hermann Ehrlich and published by Springer. This book was released on 2014-12-01 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second monograph by the author on biological materials of marine origin. The initial book is dedicated to the biological materials of marine invertebrates. This work is a source of modern knowledge on biomineralization, biomimetics and materials science with respect to marine vertebrates. For the first time in scientific literature the author gives the most coherent analysis of the nature, origin and evolution of biocomposites and biopolymers isolated from and observed in the broad variety of marine vertebrate organisms (fish, reptilian, birds and mammals) and within their unique hierarchically organized structural formations. There is a wealth of new and newly synthesized information, including dozens of previously unpublished images of unique marine creatures including extinct, extant and living taxa and their biocomposite-based structures from nano- to micro – and macroscale. This monograph reviews the most relevant advances in the marine biological materials research field, pointing out several approaches being introduced and explored by distinct modern laboratories.
Download or read book Comparative Microscopic Dental Anatomy in the Petalodontida Chondrichthyes Elasmobranchii written by H Frank Joint Author Winter and published by Andesite Press. This book was released on 2015-08-12 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Biological Materials of Marine Origin written by Hermann Ehrlich and published by Springer. This book was released on 2010-09-06 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological substances appeared in marine environments at the dawn of evolution. At that moment, the ?rst organisms acquired the ability to synthesize polymer chains which were the basis, in their turn, for the formation of the building blocks that fueled the so-called self-assembling process. They, in their turn, produced more complicated structures. The phenomenon of three main organic structural and sc- folding polymers (chitin, cellulose, and collagen) probably determined the further development and evolution of bioorganic structures and, of course, the organisms themselves. Allthethreebiopolymers,notwithstandingtheirdifferencesinchemical composition, have the common principles in their organization: nano?brils with the diameter 1. 5–2 nm, the ability to self-assemble, production of ?brillar and ?ber-like structures with hierarchical organization from nano—up to macrolevels, the ability to perform both the role of scaffolds and the templates for biomineralization and formation of the rigid skeletal structures. Chitin and collagen in particular played the determining role in the formation of skeletal structure in marine invertebrate organisms. These two biopolymers possess all the qualities needed to refer to them simul- neously as biological materials and biomaterials, the latter thanks to their successful application in biomedicine. The fact that modern science ?nds chitin and collagen both in unicellular and in multicellular invertebrates in fossil and modern species con?rms beyond a doubt the success of these biological materials in the evolution of biological species during millions of years. I realize that this success should be consolidated at genetic level and the detection of corresponding conserved genes must be the main priority.
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: World-class palaeontologists and biologists summarise the state-of-the-art on fish evolution and development.
Download or read book Catalogue of the Fossil Fishes in the British Museum Natural History written by Arthur Smith Woodward and published by . This book was released on 1895 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceans of Kansas written by Michael J. Everhart and published by Indiana University Press. This book was released on 2017-09-11 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Excellent . . . Those who are interested in vertebrate paleontology or in the scientific history of the American midwest should really get a copy.” —PalArch’s Journal of Vertebrate Paleontology Revised, updated, and expanded with the latest interpretations and fossil discoveries, the second edition of Oceans of Kansas adds new twists to the fascinating story of the vast inland sea that engulfed central North America during the Age of Dinosaurs. Giant sharks, marine reptiles called mosasaurs, pteranodons, and birds with teeth all flourished in and around these shallow waters. Their abundant and well-preserved remains were sources of great excitement in the scientific community when first discovered in the 1860s and continue to yield exciting discoveries 150 years later. Michael J. Everhart vividly captures the history of these startling finds over the decades and re-creates in unforgettable detail these animals from our distant past and the world in which they lived—above, within, and on the shores of America’s ancient inland sea. “Oceans of Kansas remains the best and only book of its type currently available. Everhart’s treatment of extinct marine reptiles synthesizes source materials far more readably than any other recent, nontechnical book-length study of the subject.” —Copeia “[The book] will be most useful to fossil collectors working in the local region and to historians of vertebrate paleontology . . . Recommended.” —Choice
Download or read book Bibliographic and Faunal Index of Paleozoic Pelmatozoan Echinoderms written by Ray Smith Bassler and published by Geological Society of America. This book was released on 1943 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
