Download or read book Treatise on Invertebrate Paleontology Archaeocyatha and Porifera 1955 written by Raymond Cecil Moore and published by . This book was released on 1954 with total page 216 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 Academy of Natural Sciences Vol 141 1989 written by and published by Academy of Natural Sciences. This book was released on with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Color Guide to the Petrography of Carbonate Rocks written by Peter A. Scholle and published by AAPG. This book was released on 2003 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Recognition of Invertebrate Fossil Fragments in Rocks and Thin Sections written by Otto P Majewske and published by BRILL. This book was released on 2023-08-14 with total page 333 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 Proceedings of The Academy of Natural Sciences Vol 150 2000 written by and published by Academy of Natural Sciences. This book was released on with total page 366 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 Fundamentals of Invertebrate Palaeontology written by Sreepat Jain and published by Springer. This book was released on 2016-11-30 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides practical morphological information, together with detailed illustrations and concise texts explaining each entry. The book details the morphological characters of each organism, providing fundamental information for palaeontologists and palaeobiologists alike. Each chapter starts with a brief introduction and goes on to describe the organism’s morphology in detail, followed by a brief note on classification and lastly illustrated examples of stratigraphically important organisms through time along with their major distinguishing characters. The book includes over 3000 clearly labelled, hand-drawn and classroom-friendly illustrations of over 1200 species.

Download or read book Porifera Archaeocyatha Coelenterata Vermes written by Boris Sergeevich Sokolov and published by . This book was released on 1971 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Fossil Book written by Patricia Vickers Rich and published by Courier Dover Publications. This book was released on 2020-01-15 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expanded edition of definitive guide for professionals and amateurs presents valuable information about finding, preserving, and studying fossils. Over 1,500 drawings and photographs. "Readable . . . and remarkably comprehensive." — Chicago Sunday Tribune.

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:

Download or read book Phosphate Deposits of the World Volume 1 written by P. J. Cook and published by Cambridge University Press. This book was released on 2005-03-17 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an important contribution to the scientific understanding of phosphate deposits.

Download or read book Principles of Zoological Micropalaeontology written by Vladimír Pokorný and published by Elsevier. This book was released on 2013-09-03 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Zoological Micropalaeontology, Volume 2 highlights the morphological, phylogenetic and ecological analysis of microfossils. This book is composed of eight chapters that survey the most important microfossil taxa, their variety of form, evolution, relationships, and distribution. The first chapters describe the general morphology and characteristics of skeletal elements of main groups of sponges, melanoscleritoids, polychaetes, and conodonts. Other chapters deal with the anatomy, reproduction, ecology, phylogenetics, classification, and geological distribution of Ostracod and Echinodermata. The last chapters examine the morphological, phylogenetic, and structural aspects of class Ascidiacea and fish microfossils. This book is of great value to micropalaeontologists, zoologists, phylogeneticists, and taxonomists.

Download or read book Fossil Invertebrates written by Ulrich Lehmann and published by Cambridge University Press. This book was released on 1983-06-02 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles of Zoological Micropalaeontology written by John W. Neale and published by Elsevier. This book was released on 2015-12-04 with total page 477 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Zoological Micropalaeontology, Volume II focuses on the study of microfossils. The book first discusses the nature and characteristics of sponges, including the morphology and main groups of sponge spicules, modifications of the shape of sponge spicules, and arrangement of skeletal elements. The text also looks at octocorals and scolecodonts. The taxonomic relationships of the melanoscleritoids; anatomy of the anterior part of the digestive system tract of polychaeta; and classification of scolecodonts are described. The selection also touches on conodonts. Topics include morphology; phylogeny of lamellar conodonts; and geological distribution of conodonts and their value in correlation. The text also examines ostracoda and echinodermata, including reproduction, sexual dimorphism, ecology of ostracods, and skeletal elements of crinoidea, echinoidea, and holothuroidea. The book also discusses otoliths. Topics include nomenclature and morphology of otoliths; geological distribution and value of otoliths, and history of research. The text is a good source of information for readers interested in fossils.