Sponges Are Skeletons

Author: Barbara Juster Esbensen

Publisher: HarperCollins

ISBN: 9780064451840

Category: Juvenile Nonfiction

Page: 32

View: 845

Time to squeeze a skeleton! It's bath time, and your sponge is actually the skeleton of an animal that lived under the sea. Read on to find out how sponges use their special holes and tunnels to eat and breathe, and how you use these same holes and tunnels to soak up the water and rinse off the soap.Sploosh! Splash! Dribble! Did you know your bath sponge once lived in the sea? Sponges come in all shapes, colors, and sizes. Barbara Juster Esbensen and Holly Keller have paired an engaging text with funny, kid-friendly illustrations to reveal that a sponge is not just a bath toy. Sploosh! Splash! Dribble! Did you know your bath sponge once lived in the sea? Sponges come in all shapes, colors, and sizes. Barbara Juster Esbensen and Holly Keller have paired an engaging text with funny, kid-friendly illustrations to reveal that a sponge is not just a bath toy.
Posted in Juvenile Nonfiction

Microfacies of Carbonate Rocks

Analysis, Interpretation and Application

Author: Erik Flügel

Publisher: Springer Science & Business Media

ISBN: 9783540220169

Category: Science

Page: 976

View: 9000

"The book brings together the methods used in microfacies analysis and details the potential of microfacies in evaluating depositional environments and diagenetic history, and, in particular, applying microfacies data to the study of carbonate hydrocarbon reservoirs and the provenance of archaeological materials. Nearly 400 instructive plates and figures (30 in color) showing thin-section photographs with detailed explanations form a central part of the content."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved
Posted in Science

Skeletons in confusion: a review of astrophorid sponges with (dicho?)calthrops as structural megascleres (Porifera, Demospongiae, Astrophorida)

Author: Rob van Soest,Elly Beglinger,Nicole De Voogd

Publisher: PenSoft Publishers LTD

ISBN: 9546425664

Category: Science

Page: 88

View: 744

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.
Posted in Science

Principles of Zoological Micropalaeontology

International Series of Monographs on Earth Sciences

Author: John W. Neale

Publisher: Elsevier

ISBN: 1483156036

Category: Nature

Page: 476

View: 8066

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.
Posted in Nature

Coralline Spongien

der Versuch einer phylogenetisch-taxonomischen Analyse

Author: Joachim Reitner

Publisher: N.A

ISBN: N.A

Category: Sponges, Fossil

Page: 352

View: 8332

Posted in Sponges, Fossil

Fossil and Recent Sponges

Author: Joachim Reitner,Helmut Keupp

Publisher: Springer Science & Business Media

ISBN: 3642756565

Category: Science

Page: 595

View: 8249

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.
Posted in Science

Sponges

Author: Patricia R. Bergquist

Publisher: Univ of California Press

ISBN: 9780520036581

Category: Science

Page: 268

View: 4870

Posted in Science

Pamphlets: sponges

Author: N.A

Publisher: N.A

ISBN: N.A

Category: Sponges

Page: N.A

View: 3224

Posted in Sponges

The Log of the Sun

Author: William Beebe

Publisher: Lulu.com

ISBN: 1304121976

Category: Animals

Page: 319

View: 2437

Posted in Animals

The Outer Lands: A Natural History Guide to Cape Cod, Martha's Vineyard, Nantucket, Block Island, and Long Island

Author: Dorothy Sterling

Publisher: W. W. Norton & Company

ISBN: 0393247201

Category: Science

Page: 200

View: 6373

Did you know that horseshoe crabs have been around for 200 million years? That mussels "spin" long anchor lines and climb steep slopes with them? Do you know what a "Beetlebung" tree is? This is all part of Dorothy Sterling's fascinating description of The Outer Lands, and the plants and animals that inhabit this peninsula and chain of islands along our New England coast.
Posted in Science

Pennak's Freshwater Invertebrates of the United States

Porifera to Crustacea

Author: Douglas Grant Smith

Publisher: John Wiley & Sons

ISBN: 9780471358374

Category: Science

Page: 638

View: 7961

Invertebrate Zoology deals with the animals that have no backbones, including the shrimps, crabs, sponges, worms, snails and squids. This book deals specifically with the invertebrates that spend all or part of their lifecycle in a freshwater environment. (As is usual and as in the previous edition, aquatic insects are excluded due to their vast numbers.) The invertebrate species far outnumber the vertebrate species, and a through understanding of aquatic invertebrate zoology is essential.
Posted in Science

Animals Without Backbones

An Introduction to the Invertebrates

Author: Ralph Buchsbaum,Mildred Buchsbaum,John Pearse,Vicki Pearse

Publisher: University of Chicago Press

ISBN: 022607627X

Category: Science

Page: 582

View: 8163

Animals Without Backbones has been considered a classic among biology textbooks since it was first published to great acclaim in 1938. It was the first biology textbook ever reviewed by Time and was also featured with illustrations in Life. Harvard, Stanford, the University of Chicago, and more than eighty other colleges and universities adopted it for use in courses. Since then, its clear explanations and ample illustrations have continued to introduce hundreds of thousands of students and general readers around the world to jellyfishes, corals, flatworms, squids, starfishes, spiders, grasshoppers, and the other invertebrates that make up ninety-seven percent of the animal kingdom. This new edition has been completely rewritten and redesigned, but it retains the same clarity and careful scholarship that have earned this book its continuing readership for half a century. It is even more lavishly illustrated than earlier editions, incorporating many new drawings and photographs. Informative, concise legends that form an integral part of the text accompany the illustrations. The text has been updated to include findings from recent research. Eschewing pure morphology, the authors use each group of animals to introduce one or more biological principles. In recent decades, courses and texts on invertebrate zoology at many universities have been available only for advanced biology majors specializing in this area. The Third Edition of Animals Without Backbones remains an ideal introduction to invertebrates for lower-level biology majors, nonmajors, students in paleontology and other related fields, junior college and advanced high school students, and the general reader who pursues the rewarding study of the natural world.
Posted in Science

Life and Death Of Coral Reefs

Author: Charles Birkeland

Publisher: Springer Science & Business Media

ISBN: 9780412035418

Category: Science

Page: 536

View: 3438

Coral reefs have shaped the surface of our planet far more than has any other ecosystem. They are dynamic systems, producing limestone at the rate of 400-2,000 tons per hectare per year, and influencing the chemical balance of the world's oceans. Coral reefs have been around since before the prairies or other ecosystems of flowering plants existed, yet they vanish about a million years before other groups of organisms each time there is a global mass extinction. They return after each catastrophe, however, following a long period of absence. Although coral reefs are the most productive communities in the sea, the fisheries of coral reefs are among the most vulnerable to overexploitation. Despite having the power to create the most massive structures in the world made by living creatures (including man), the thin veneer of living tissue of coral reef is particularly sensitive to natural disturbances and effects of human activities. Coral reefs are the first to go during periods of climate change, but they have always come back. This combination of attributes, creative power and fragility, resilience and sensitivity, makes management of coral-reef systems a challenge to science. Over 70% of the coral reefs in the Caribbean and Asian waters have been degraded, and perhaps a third of the 400 species of corals in Japanese waters are in danger of local extinction unless effective coastal management practices are established. This book presents what is known about factors that shift the balance between accretion and erosion, recruitment and mortality, stony corals and filamentous algae, recovery and degradation--the life and death of coral reefs. Insight into the factors controlling the direction of these processes is essential for appropriate management decisions.
Posted in Science

The Ecology of the Indonesian Seas

Author: Tomas Tomascik

Publisher: N.A

ISBN: 9780198501862

Category: Coral reefs and islands

Page: 746

View: 8752

Located between the Pacific and Indian Oceans, and between the Asian and Australian continents, the seas of the Indonesian Archipelago have a significant role in global weather patterns and oceanic circulation. The dynamic interplay between geological, physical, chemical, and biological processes, past and present, has given rise to one of the most diverse marine regions on the planet. Using maps and numerous illustrations, This text describes the complex coastal and marine ecosystems of the region in detail. Discussion of development, resource use and ecologically sustainable management plans is also incorporated.
Posted in Coral reefs and islands

INVERTEBRATE ZOOLOGY

Author: MANDAL

Publisher: PHI Learning Pvt. Ltd.

ISBN: 8120346157

Category: Science

Page: 360

View: 3077

This comprehensive book incorporates systematic study of all invertebrate phyla from protozoa to hemichordata. It provides detailed description of representative genus of each of the major groups studied at undergraduate and postgraduate courses in zoology and life sciences. It gives contemporary accounts on adaptive morphology, anatomy, physiology, including diversity in the mode of locomotion, nutrition respiration, reproduction, and varied life cycle pattern of representative genus. This adequately explained and immensely illustrated text, with updated information, will prove to be a valuable source for students and academics. The last Chapter on Conservation of Invertebrates draws special attention of readers.
Posted in Science

The Comparative Embryology of Sponges

Author: Alexander V. Ereskovsky

Publisher: Springer Science & Business Media

ISBN: 9789048185757

Category: Science

Page: 329

View: 5230

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.
Posted in Science

Sessile Animals of the Sea Shore

Author: Vernon Haris

Publisher: Springer Science & Business Media

ISBN: 9780412337604

Category: Science

Page: 379

View: 3584

This is a study on the sessile species of the intertidal zone which attempts to portray the intricate interplay of structural, physiological and behavioural adaptations that enable one animal to live where its congeners cannot.
Posted in Science