Download or read book New Sponges from the Puerto Rican Deep written by Max Walker De Laubenfels and published by . This book was released on 1934 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Sponges from the Puerto Rican Deep written by and published by . This book was released on 1934 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Johnson Fund Reports on the Collections Obtained by the First Johnson Smithsonian Deep see Expedition to the Puerto Rican Deep New Sponges from the Puerto Rican Deep by M W de Laubenfels written by M. W. de Laubenfels and published by . This book was released on 1934 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rocas Alijos written by Robert W. Schmieder and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rocas Alijos lies 180 nautical miles west of Baja California. It comprises several exposed rocks that surmount a large oceanic volcano rising from the ocean floor well off the continental shelf. It is located at the transition zone between two major biologic provinces, at a latitude where the Pacific Current turns westward to form the north Pacific trans-oceanic current. In spite of its obvious importance for biogeographical studies, the remoteness of Rocas Alijos and its small size thwarted any major scientific work until very recently, and the topography, biota, and oceanographic conditions of the site remained largely unknown. During 1990, and again in 1993, Cordell Expeditions, a nonprofit research organization based in Walnut Creek, California, undertook expeditions to describe the site. A scientific team of 30 was onsite 31 October-7 November 1990, and a scientific team of 12 was onsite 10-15 February 1993. Since most of the Rocas Alijos site is subtidal, much of the examination and specimen collection was done by scuba, although several remote sampling techniques were also used. The exposed rocks were sampled by climbers, and megafauna were observed from shipboard.
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 Catalogue of the Public Documents of the the Fifty third Congress to the 76th Congress and of All Departments of the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1896 with total page 2662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pamphlets on Protozoology Kofoid Collection written by and published by . This book was released on 1909 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Genus of Brittlestars from Puerto Rico written by Aaron Louis Treadwell and published by . This book was released on 1935 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Bulletin of the written by and published by . This book was released on 1954 with total page 682 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 Collected Papers on Bryozoa written by Raymond Carroll Osburn and published by . This book was released on 1912 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Fishery Bulletin of the Fish and Wildlife Service written by and published by . This book was released on 1954 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Public Documents of the Congress and of All Departments of the Government of the United States for the Period from to written by United States. Superintendent of Documents and published by . This book was released on with total page 2660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gulf of Mexico Its Origin Waters and Marine Life written by Paul Simon Galtsoff and published by . This book was released on 1954 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog United States Public Documents written by United States. Superintendent of Documents and published by . This book was released on 1934-07 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Download or read book Monthly Catalog United States Public Documents written by and published by . This book was released on 1935 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
