Download or read book Report on the Tetractinellida Collected by H M S Challenger During the Years 1873 1876 written by William Johnson Sollas and published by . This book was released on 1965 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on the Scientific Results of the Voyage of H M S Challenger During the Years 1873 76 Under the Command of Captain George S Nares and the Late Captain Frank Tourle Thomson written by Great Britain. Challenger Office and published by . This book was released on 1888 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quarterly Journal of Microscopical Science written by and published by . This book was released on 1891 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Bulletin of the United States Bureau of Fisheries written by United States. Bureau of Fisheries and published by . This book was released on 1921 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Comparative Anatomy of Sponges written by Arthur Dendy and published by . This book was released on 1888 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reports and Transactions written by Cardiff Naturalists' Society and published by . This book was released on 1914 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OF1994 01 Ordovician Lithistid Sponges of the Great Basin written by Ronald A. Johns and published by NV Bureau of Mines & Geology. This book was released on 1994 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Royal Society of London written by Royal Society (Great Britain) and published by . This book was released on 1925 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transactions of the Cardiff Naturalists Society written by Cardiff Naturalists' Society and published by . This book was released on 1914 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Choanoflagellates written by Barry S. C. Leadbeater and published by Cambridge University Press. This book was released on 2015-01-08 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique account of the biology, ecology and evolution of choanoflagellates - the closest, known, living, unicellular relatives of animals.
Download or read book Initial Reports of the Deep Sea Drilling Project written by Scripps Institution of Oceanography and published by . This book was released on 1969 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taxonomy of Porifera written by Jean Vacelet and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although sponges are one of the major components of littoral ecosystems, their systematics obviously lags behind that of the majority of other groups of marine invertebrates. Also the evolutionary trends in these most primitive of the Metazoans are poorly understood. The confused state of their taxonomy and the difficulties with their identification prevent their use in ecological studies. The emphasis of interest presently seems to have shifted towards chemistry, but many of the hundreds of interesting chemicals recently described in sponges pro bably have been found in mistakenly or imprecisely identified animals. This situ ation will become worse in the next few years, when a number of experts will retire and will not be replaced by new ones, owing to the difficulties that the science of systematics is facing in most countries - as exemplified during this meeting by an informal discussion on the endangered future of European Museums. Under these circumstances, it is the responsability of present sponge taxono mists to leave a less confused state and tools such as simple fauna or computerized data bases to generations following. These tools do not exist even in one of the best studied areas, the North-Eastern Atlantic (including the Mediterranean Sea).
Download or read book Skeletons in confusion a review of astrophorid sponges with dicho calthrops as structural megascleres Porifera Demospongiae Astrophorida written by Rob van Soest and published by PenSoft Publishers LTD. This book was released on 2010-11-16 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sponges usually obtain their distinct shape and structure by arrangement of mineral or organic skeletal elements (spicules, ?bers). A small group, although provided with spicules, nevertheless is incapable of developing recognizable shapes because the type of structural spicules they have (equal-length four-rayed siliceous elements called calthrops) preclude the possibility of building a cohesive skeleton. Such sponges insinuate themselves in crevices and holes, diminishing the chance of their discovery and collection. The study addresses the taxonomy and biodiversity of two globally distributed genera of these sponges, Dercitus and Calthropella, including the description of ten new species (of 38 species so far documented). The two genera appear similar in spiculation, but they differ in the types of small spicules (microscleres). This induces a discussion of their phylogeny and classi? cation: are they closely related or is it convergent evolution? No proposals are made for a rearranged classi? cation pending independent evidence from molecular studies.
Download or read book Marine Biological Materials of Invertebrate Origin written by Hermann Ehrlich and published by Springer Nature. This book was released on 2019-10-17 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work is a source of modern knowledge on biomineralization, biomimetics and bioinspired materials science with respect to marine invertebrates. The author gives the most coherent analysis of the nature, origin and evolution of biocomposites and biopolymers isolated from and observed in the broad diversity of marine invertebrate organisms and within their unusual structural formations. The basic format is that of a major review article, with liberal use of references to original literature. There is a wealth of new and newly synthesized information, including dozens of previously unpublished images of unique marine creatures and structures from nano- to microscale including high-resolution scanning and transmission electron micrographs. The material is organized effectively along both biological (phyla) and functional lines. The classification of biological materials of marine origin is proposed and discussed. Much of the pertinent data is organized into tables, and extensive use is made of electron micrographs and line drawings. Several modern topics e.g. “biomineralization- demineralization-remineralization phenomena”, or “phenomenon of multiphase biomineralization”, are discussed in details. Traditionally, such current concepts as hierarchical organization of biocomposites and skeletal structures, structural bioscaffolds, biosculpturing, biomimetism and bioinspiration as tools for the design of innovative materials are critically analyzed from both biological and materials science point of view using numerous unique examples of marine origin. This monograph reviews the most relevant advances in the marine biomaterials research field, pointing out several approaches being introduced and explored by distinct laboratories.
Download or read book Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel The Porifera written by Andrew L. Lissner and published by . This book was released on 1994 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
