Download or read book A Memoir on the Palaeozoic Reticulate Sponges written by James Hall and published by . This book was released on 1898 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Memoir on the Palaeozoic Reticulate Sponges Constituting the Family Dictyospongidae Classic Reprint written by James Hall and published by Forgotten Books. This book was released on 2017-12-20 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Memoir on the Palaeozoic Reticulate Sponges Constituting the Family Dictyospongidae So rapid has been the growth of these collections and so generous the disposition of all collectors and students toward the perfecting of this monograph, that to-day we present descriptions of about thrice the number of specific forms recognized as such, seven years ago. This wonderful increase is not especially a matter for congratulation, save that it serves to show the amazing diversity of these siliceous sponges in late Devonian and early Carboniferous faunas. The species and genera are established in accordance with the best standards attainable for these variable organisms. Future collections and observations may show that these divisions are not in all cases sharply defined they will undoubtedly Show that the present account of this organic element in these ancient rocks is far from being complete. In 1892, Mr. Clarke undertook a revision of all previous work upon these fossils and this, with the elaboration of new material, he has carried forward to its present state. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Fossil and Recent Sponges written by Joachim Reitner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fossil and Recent Sponges contains articles on taxonomic, phylogenetic and ecological aspects of sponges of both biological and paleontological interest. They focus on three main topics: phylogeny and systematics, biology, and paleoecology of sponges. The reader is offered an overview over the most important aspects of current sponge research: - establishment of a new taxonomy based on mono phyletic groups (phylogenetic systematics) including recent and fossil taxa - new concepts of the biomineralisation of sponge skeletons - palaeoenvironmental analysis of fossil sponge buildups.
Download or read book Memoir written by and published by . This book was released on 1898 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Memoir on the Palaeozoic Reticulate Sponges Constituting the Family Dictyospongidae written by and published by . This book was released on 1898 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A memoir on the Palaeozoic Reticulate Sponges constituting the family Dictyospongidae written by James Hall and published by . This book was released on 1898 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Memoir on the Palaeozoic Reticulate Sponges Constituting the Family Dictyospongidae written by James Hall and published by Hardpress Publishing. This book was released on 2012-08 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Download or read book Memoirs written by New York State Museum and published by . This book was released on 1898 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by New York State Museum and published by . This book was released on 1904 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Silurian Llandovery Telychian Sponge Assemblage from Gotland Sweden written by Freek Rhebergen and published by John Wiley & Sons. This book was released on 2014-02-27 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: A newly discovered, diverse sponge fauna of early Silurian age, is described from Gotland, Sweden. This is the first Silurian sponge assemblage known from Baltica, and the only diverse Llandoverian assemblage known worldwide. The fauna includes 20 genera and 29 species, of which three genera and six species are new. Eighteen species are new to Baltica. The fauna shows strong similarities to later Silurian assemblages in Arctic Canada, but one endemic species comprises ca. 50% of the fauna. The fauna shows that lithistid sponges recovered well from the late Ordovician extinction in some areas, and became widely spread in the early Silurian. In contrast, non-lithistid sponges like, such as hexactinellids, appear to have evolved rapidly during the Late Ordovician – early Silurian interval, and some modern groups probably originated in inshore habitats.
Download or read book Receptaculitids written by Matthew H. Nitecki and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Receptaculitids are extinct high-level fossils that provide a window into the history of life. After the discovery and analysis of a deposit of phosphatized receptaculitids on the Baltic Sea island of Öland, the authors conclude that receptaculitids possess an attribute not found in any other group of organisms, living or fossil.
Download or read book MEMOIR ON THE PALAEOZOIC RETIC written by James 1811-1898 Hall and published by . This book was released on 2016-08-27 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of State Librarian written by Pennsylvania State Library and published by . This book was released on 1901 with total page 424 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 Bibliography and Index of North American Geology Paleontology Petrology and Mineralogy for the Years 1892 1900 Inclusive written by Fred Boughton Weeks and published by . This book was released on 1902 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography and Index of North American Geology Paleontology Petrology and Mineralogy for the Year 1899 written by Fred Boughton Weeks and published by . This book was released on 1900 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography and Index of North American Geology Paleontology Petrology and Mineralogy written by Fred Boughton Weeks and published by . This book was released on 1902 with total page 1084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
