Download or read book Die Familie der Aplysinidae written by and published by . This book was released on 1877 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Comparative Embryology of Sponges written by Alexander V. Ereskovsky and published by Springer Science & Business Media. This book was released on 2010-03-27 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major questions in the evolution of animals is the transition from unicellular to multicellular organization, which resulted in the emergence of Metazoa through a hypothetical Urmetazoa. The Comparative Embryology of Sponges contains abundant original and literary data on comparative embryology and morphology of the Porifera (Sponges), a group of 'lower Metazoa'. On the basis of this material, original typization of the development of Sponges is given and the problems concerning origin and evolution of Porifera and their ontogenesis are discussed. A morphogenetic interpretation of the body plan development during embryogenesis, metamorphosis and asexual reproduction in Sponges is proposed. Special attention is given to the analysis of characteristic features of the ontogenesis in Porifera. The book pursues three primary goals: 1) generalization of all existing information on individual development of sponges, its classification and a statement according to taxonomical structure of Porifera; 2) revealing of heterogeneity of morphogenesis and peculiarities of ontogeneses in various clades of Porifera, and also their correlations with the organization, both adult sponges, and their larvae; 3) revealing homology of morphogeneses in both Porifera and Eumetazoa, testifying to the general evolutionary roots of multicellular animals, and peculiar features of sponges' morphogeneses and ontogenesis. This book will be of interest to embryologists, zoologists, morphologists and researchers in evolutionary biology.
Download or read book The Journal of Experimental Zoology written by Ross Granville Harrison and published by . This book was released on 1910 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Systema Porifera written by John N.A. Hooper and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1779 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research whilst compiling this book has uncovered a fauna about twice the size as that previously published in the literature and consequently Systema Porifera revises and stabilizes the systematics of the phylum to accommodate this new knowledge in a contemporary framework. Practical tools (key illustrations, descriptions of character) are provided to facilitate the assignment of approximately 680 extant and 100 fossil genera. Systema Porifera is unique making sponge taxonomy widely available at the practical level of classification (genera, families, order). It is a taxonomic revision of sponges and spongiomorphis (such as sphinctozoans and archaeocyathans) based on re-evaluation of type materials and evidence. It is also a practical guide to sponge identification providing descriptions and illustrations of characters and interpretation of their importance to systematics. Systema Porifera addresses many long standing nomenclatural problems and provides a sound baseline for future debate on sponges and their place in time and space. Systema Porifera describes 3 classes, 7 subclasses, 24 orders, 127 families and 682 valid genera of extant sponges (with over 1600 nominal generic names and an additional 500 invalid names treated). Treatment of the fossil fauna is less comprehensive or critical, although 6 classes, 30 orders, 245 families and 998 fossil genera are mentioned. Keys to all recent and many fossil taxa are provided.
Download or read book Contributions to the Biology of the Philippine Archipelago and Adjacent Regions written by Henry Van Peters Wilson and published by . This book was released on 1925 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 2 of this collection of papers consists of papers concerning the biological survey samples collected by the United States Bureau of Fisheries steamer "Albatross" in the Philippine Islands region between 1907 and 1910. There are 5 separate papers mainly concentrated on invertebrates such as Salps, pelagic tunicates, sponges, and shipworms, by various authors that are listed as "Parts".
Download or read book Silicious and Horny Sponges Collected by the U S Fisheries Steamer Albatross During the Philippine Expedition 1907 10 written by Henry Van Peters Wilson and published by . This book was released on 1925 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimentelle Untersuchungen ber Die Physiologie Der Spongien written by Robert J. Ledenfeld (edler von Lendlmayer, reichsritter von) and published by . This book was released on 1889 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Process of Spermatogenesis in Animals written by Edward C. Roosen-Runge and published by CUP Archive. This book was released on 1977 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the Elisha Mitchell Scientific Society written by Elisha Mitchell Scientific Society (Chapel Hill, N.C.). and published by . This book was released on 1911 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 20- include Proceedings of the North Carolina academy of science, 1902-
Download or read book Bibliography of Sponges 1551 1913 written by Gualtherus Carel Jacob Vosmaer and published by CUP Archive. This book was released on with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shallow water sponges of the western Bahamas written by F. Wiedenmayer and published by Birkhäuser. This book was released on 2013-11-21 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the period the sponges described herein were which were used only sporadically in the past and were collected (1963-7), the author was a Research Associate regarded as of marginal value until two decades ago, at the Department of Geology, University of Illinois, paleontology and embryology, are now receiving great participating in a research project on carbonate attention. They have already brought drastic revisions to sediments of the Bimini area, directed by Prof. William systematics, with regard to redefinition and classification W. Hay (Department of Geology, University of Illinois. of higher taxa. Other approaches have recently emerged utilizing biochemistry, histology, cytology, autecology, now at the Rosenstiel School of Marine and Atmospheric and zoogeography, and these promise significant ad Science, University of Miami) and supported by the National Science Foundation. The objective of this pro vance in the delimitation and classification oflower taxa. ject was a study of the relationship between the carbo The rapidly changing state of sponge taxonomy is reflect nate sediments of the Bimini area and the benthonic ed in the paucity of definitive (i. e. widely accepted) revisions of genera and families. The lack of stability and fauna and flora, especially with regard to skeletal ele ments contributed to the sediment.
Download or read book Pamphlets on Biology written by and published by . This book was released on 2015-09-19 with total page 702 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 The Salpidae Collected by the United States Fisheries Steamer Albatross in Philippine Waters During the Years 1908 and 1909 written by Maynard Mayo Metcalf and published by . This book was released on 1932 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by United States National Museum and published by . This book was released on 1932 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Cacti of Southern Mexico written by Elmer Yale Dawson and published by . This book was released on 1948 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Marine Fauna of New Zealand written by Elliot W. Dawson and published by . This book was released on 1993 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
