Origin And Early Evolution Of The Metazoa

Author : Jere H. Lipps,Philip W. Signor
Publisher : Springer Science & Business Media
Page : 568 pages
File Size : 47,8 Mb
Release : 2013-11-21
Category : Science
ISBN : 9781489924278

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Origin and Early Evolution of the Metazoa by Jere H. Lipps,Philip W. Signor Pdf

Several years ago, we realized that the most prominent ideas that had been ex pressed about the origin and early evolution of the Metazoa seemed to have been developed chiefly by zoologists using evidence from modern species without reference to the fossil record. Paleontologists had, in fact, put forth their own ideas but the zoological and the paleontological evidence were about the problem, seldom considered together, especially by zoologists. We believed that the paleon tological documentation of the first Metazoa was too scattered, too obscure to Western readers, and much of it too recent to have been readily available to our colleagues in zoology. Whether or not that was entirely true, we thought that a single volume reviewing the fossil record of the earliest Metazoa would be useful to many in both paleontology and zoology, especially since so much new informa tion has been developed in the last few years. Some of this information has been summarized in general articles recently, but an overview of most of the field does not exist. We therefore organized this book in five parts so that the evidence could be placed in perspective and summarized and inferences made from it. Part I intro duces the previous hypotheses that have been proposed for the origin and early radiation of Metazoa. Part II consists of two summary chapters that set the sedi mentological, geochemical, and biological background to the known radiations of Metazoa.

Author : Werner E.G. Müller
Publisher : Springer Science & Business Media
Page : 191 pages
File Size : 43,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642722363

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Molecular Evolution: Towards the Origin of Metazoa by Werner E.G. Müller Pdf

Recently, new genes and their proteins that revealed striking new insights into the early evolution of multicellular animals have been identified and characterized from members of the lowest metazoan phylum, the porifera (sponges). The unexpected result was that the sequences obtained from sponge displayed high similarity to those found in higher metazoa; in consequence, it was concluded that during the transition from protozoa to metazoa the major structural and regulatory proteins evolved only once. The data gathered are now powerful arguments to establish monophyly of metazoa; in addition, new insights on the evolutionary diversification of metazoa were obtained.

Author : Alberto M. Simonetta,Simon Conway Morris
Publisher : Cambridge University Press
Page : 0 pages
File Size : 43,6 Mb
Release : 2009-06-11
Category : Science
ISBN : 0521111587

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The Early Evolution of Metazoa and the Significance of Problematic Taxa by Alberto M. Simonetta,Simon Conway Morris Pdf

One of the great enigmas of evolutionary biology has been how to treat animals of problematic systematic position. Many are known only as fossils, so this area has been of particular interest to palaeobiologists. This book represents a wide synthesis. It embraces not only general problems of animal classification of animals and new information on their molecular sequences that bear on their wider relationships, but also addresses more specific problems. These include details appraisals of both living and fossil groups. From the fossil record special emphasis is laid on examples from exceptionally preserved biotas that include the Burgess shale-type faunas of the Cambrian of south China and western North America, the Carboniferous Mazon Creek beds of Illinois, and the Jurassic Osteno beds of northern Italy. In addition, experimental studies of soft-patrt preservation in jellyfish are relevant to comparable preservation in the fossil record.

Author : Earl D. Hanson
Publisher : Wesleyan
Page : 0 pages
File Size : 51,8 Mb
Release : 1977
Category : Biological Evolution
ISBN : 0819550086

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The Origin and Early Evolution of Animals by Earl D. Hanson Pdf

Author : Sally Leys,Andreas Hejnol
Publisher : Unknown
Page : 128 pages
File Size : 47,9 Mb
Release : 2021
Category : Electronic
ISBN : 0367766086

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Origin and Evolution of Metazoan Cell Types by Sally Leys,Andreas Hejnol Pdf

Author : Joachim Reitner,Volker Thiel
Publisher : Springer
Page : 927 pages
File Size : 45,5 Mb
Release : 2011-03-10
Category : Science
ISBN : 140209213X

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Encyclopedia of Geobiology by Joachim Reitner,Volker Thiel Pdf

The interplay between Geology and Biology has shaped the Earth from the early Precambrian, 4 billion years ago. Moving beyond the borders of the classical core disciplines, Geobiology strives to identify chains of cause-and-effect and synergisms between the geo- and the biospheres that have been driving the evolution of life in modern and ancient environments. Combining modern methods, geobiological information can be extracted not only from visible remains of organisms, but also from organic molecules, rock fabrics, minerals, isotopes and other tracers. An understanding of these processes and their signatures reveals enormous applied potentials with respect to issues of environment protection, public health, energy and resource management. The Encyclopedia of Geobiology has been designed to act as a key reference for students, researchers, teachers, and the informed public and to provide basic, but comprehensible knowledge on this rapidly expanding discipline that sits at the interface between modern geo- and biosciences.

Author : Jovan Hadži
Publisher : Elsevier
Page : 514 pages
File Size : 49,8 Mb
Release : 2013-09-03
Category : Science
ISBN : 9781483226637

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The Evolution of the Metazoa by Jovan Hadži Pdf

Zoology, Volume 16: The Evolution of the Metozoa presents the significant results of the Cnidaria research, their interpretations and implications in the field of zoology. This book is composed of four chapters, and begins with the establishment of the systematic position of the Spongiae, the position of Ctenophora in the animal classification, and Cnidaria as the only Coelenterata. The subsequent chapter deals with a critical survey of the interpretations of the origin and nature of Cnidaria, with emphasis on the morphologic proofs of its phylogeny. These topics are followed by an outline of the most probable reconstruction of the phylogeny of Cnidaria and the descriptions of the evolution of this metozoa. The final chapter considers the established classification of the animal world and the genealogical tree. This book will be of value to zoologists and researchers who are interested in evolution and classification of Cnidaria.

Author : Peter Godfrey-Smith
Publisher : Farrar, Straus and Giroux
Page : 352 pages
File Size : 49,8 Mb
Release : 2020-11-10
Category : Science
ISBN : 9780374720186

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Metazoa by Peter Godfrey-Smith Pdf

"Enthralling . . . breathtaking . . . Metazoa brings an extraordinary and astute look at our own mind’s essential link to the animal world." —The New York Times Book Review (Editors' Choice) "A great book . . . [Godfrey-Smith is] brilliant at describing just what he sees, the patterns of behaviour of the animals he observes." —Nigel Warburton, Five Books The scuba-diving philosopher who wrote Other Minds explores the origins of animal consciousness Dip below the ocean’s surface and you are soon confronted by forms of life that could not seem more foreign to our own: sea sponges, soft corals, and serpulid worms, whose rooted bodies, intricate geometry, and flower-like appendages are more reminiscent of plant life or even architecture than anything recognizably animal. Yet these creatures are our cousins. As fellow members of the animal kingdom—the Metazoa—they can teach us much about the evolutionary origins of not only our bodies, but also our minds. In his acclaimed 2016 book, Other Minds, the philosopher and scuba diver Peter Godfrey-Smith explored the mind of the octopus—the closest thing to an intelligent alien on Earth. In Metazoa, Godfrey-Smith expands his inquiry to animals at large, investigating the evolution of subjective experience with the assistance of far-flung species. As he delves into what it feels like to perceive and interact with the world as other life-forms do, Godfrey-Smith shows that the appearance of the animal body well over half a billion years ago was a profound innovation that set life upon a new path. In accessible, riveting prose, he charts the ways that subsequent evolutionary developments—eyes that track, for example, and bodies that move through and manipulate the environment—shaped the subjective lives of animals. Following the evolutionary paths of a glass sponge, soft coral, banded shrimp, octopus, and fish, then moving onto land and the world of insects, birds, and primates like ourselves, Metazoa gathers their stories together in a way that bridges the gap between mind and matter, addressing one of the most vexing philosophical problems: that of consciousness. Combining vivid animal encounters with philosophical reflections and the latest news from biology, Metazoa reveals that even in our high-tech, AI-driven times, there is no understanding our minds without understanding nerves, muscles, and active bodies. The story that results is as rich and vibrant as life itself.

Author : J. Wolfgang Wägele,Thomas Bartolomaeus
Publisher : Walter de Gruyter
Page : 764 pages
File Size : 40,9 Mb
Release : 2014-02-27
Category : Science
ISBN : 9783110277524

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Deep Metazoan Phylogeny: The Backbone of the Tree of Life by J. Wolfgang Wägele,Thomas Bartolomaeus Pdf

The growing success of molecular methods has challenged traditional views of animal evolution and a large number of alternative hypotheses are hotly debated today. For the deep metazoan phylogeny project, data sets of hitherto unmatched quality and quantity were compiled and analysed with innovative bioinformatics tools. The book begins at the base of the tree of life to discuss the origin of animals and early branches of the phylogenetic tree. The following section presents special data sets gained from mitochondrial genomes and from morphology, with a focus on nervous systems. The final section is dedicated to theoretical aspects of data analysis and new bioinformatics tools. The book closes with a unique general discussion of all hypotheses contained in previous chapters. This work provides the most comprehensive overview available of the state of the art in this exciting field of evolutionary research.

Author : Rob Desalle,Bernd Schierwater
Publisher : CRC Press
Page : 439 pages
File Size : 50,5 Mb
Release : 2010-12-07
Category : Science
ISBN : 9781439854020

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Key Transitions in Animal Evolution by Rob Desalle,Bernd Schierwater Pdf

Tackling one of the most difficult and delicate of the evolutionary questions, this challenging book summarizes the more recent results in phylogenetics and developmental biology that address the evolution of key innovations in metazoans. Divided into three sections, the first considers the phylogenetic issues involving this area of the tree of lif

Author : Y. Pichon
Publisher : Birkhäuser
Page : 445 pages
File Size : 51,9 Mb
Release : 2013-03-08
Category : Science
ISBN : 9783034872652

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Comparative Molecular Neurobiology by Y. Pichon Pdf

It is generally accepted that all living organisms present on earth derive from one single primordial cell born several billion years ago. One important step in the evolution occurred some 1. 5 billion years ago with the transition from small procaryote cells with relatively simple internal structures such as bacteria to larger and more compleX: eucaryotic cells such as those found in higher animals and plants. Large membrane proteins which enable the cells to communicate appeared early in evolution, and it is believed that the nerve membrane receptors and ionic channels which are observed today in both invertebrate and vertebrate species derive from a common ancestor. Basically, the three identified superfamilies, 1) ionotropic receptors (i. e. receptors containing an integral ionic channel), 2) metabotropic receptors (receptors coupled to G proteins) and 3) voltage-dependent ionic channels (Na+, K + and Ca2+ channels) were already well differentiated when vertebrates separated from invertebrate species. The large number of subtypes which are observed in each superfamily may be of more recent evolutionary origin. To understand how this happened, the best approach was to compare the sequences and the properties of the receptors and ionic channels in species sufficiently distant in the evolutionary tree. In the present volume, many of the best specialists in the field of comparative molecular neurobiology, several of them working on vertebrate and invertebrate species, have accepted to report their most recent findings.

Author : R. B. Clark
Publisher : Unknown
Page : 313 pages
File Size : 42,5 Mb
Release : 1967
Category : Electronic
ISBN : OCLC:1123349046

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Dynamics in Metazoan Evolution by R. B. Clark Pdf

Author : Barry S. C. Leadbeater
Publisher : Cambridge University Press
Page : 331 pages
File Size : 51,8 Mb
Release : 2015-01-08
Category : Science
ISBN : 9780521884440

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The Choanoflagellates by Barry S. C. Leadbeater Pdf

A unique account of the biology, ecology and evolution of choanoflagellates - the closest, known, living, unicellular relatives of animals.

Author : Peter A.V. Anderson
Publisher : Springer Science & Business Media
Page : 427 pages
File Size : 53,8 Mb
Release : 2013-11-11
Category : Science
ISBN : 9781489909213

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Evolution of the First Nervous Systems by Peter A.V. Anderson Pdf

This book represents the proceedings of a NATO Advanced Research Workshop of the same name, held at St. Andrews University, Scotland in July of 1989. It was the first meeting of its kind and was convened as a forum to review and discuss the phylogeny of some of the cell biological functions that underlie nervous system function, such matters as intercellular communication in diverse, lower organisms, and the electrical excitability of protozoans and cnidarians, to mention but two. The rationale behind such work has not necessarily been to understand how the first nervous systems evolved; many of the animals in question provide excellent opportunities for examining general questions that are unapproachable in the more complex nervous systems of higher animals. Nevertheless, a curiosity about nervous system evolution has invariably pervaded much of the work. The return on this effort has been mixed, depending to a large extent on the usefulness of the preparation under examination. For example, work on cnidarians, to many the keystone phylum in nervous system evolution simply because they possess the "first" nervous systems, lagged behind that carried out on protozoans, because the latter are large, single cells and, thus, far more amenable to microelectrode-based recording techniques. Furthermore, protozoans can be cultured easily and are more amenable to genetic and molecular analyses.

Author : Robert Bernard Clark
Publisher : Unknown
Page : 313 pages
File Size : 44,7 Mb
Release : 1964
Category : Animal locomotion
ISBN : OCLC:163808838

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Dynamics in Metazoan Evolution by Robert Bernard Clark Pdf