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Author: Sally Morgan
Publisher: Capstone Classroom
ISBN: 9781410913494
Category : Juvenile Nonfiction
Languages : en
Pages : 68
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Book Description
Discusses physical characteristics of different invertebrates such as sponges, cnidarians, worms, and echinoderms that are found around the world.
Author: Sally Morgan
Publisher: Capstone Classroom
ISBN: 9781410913494
Category : Juvenile Nonfiction
Languages : en
Pages : 68
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Book Description
Discusses physical characteristics of different invertebrates such as sponges, cnidarians, worms, and echinoderms that are found around the world.
Author: John N.A. Hooper
Publisher: Springer Science & Business Media
ISBN: 1461507472
Category : Science
Languages : en
Pages : 1779
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Book Description
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.
Author: Sally Morgan
Publisher: Capstone Classroom
ISBN: 9781410913463
Category : Juvenile Nonfiction
Languages : en
Pages : 68
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Book Description
Discusses the group of animals know as mammals, each is shown in their natural habitats, and examines what makes these groups different from each other.
Author: Ruth Miller
Publisher: Capstone Classroom
ISBN: 9781410913487
Category : Juvenile Nonfiction
Languages : en
Pages : 68
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Book Description
Discusses characteristics of different reptiles that belong to vertebrates with backbones and live in hot, dry regions.
Author: Daniel Gilpin
Publisher: Capstone
ISBN: 9780756516130
Category : Juvenile Nonfiction
Languages : en
Pages : 52
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Book Description
Introduces the reader to an incredible group of animals, from the common garden snail to the giant squid.
Author: Sally Morgan
Publisher: Heinemann-Raintree Library
ISBN: 9781410910462
Category : Juvenile Nonfiction
Languages : en
Pages : 52
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Book Description
Classifies each kind of amphibian, shows them in their natural habitats, and presents amazing facts about the longest-lived salamander to the most poisonous frog.
Author: Sarah Bowen
Publisher: Princeton University Press
ISBN: 0995567387
Category : Nature
Languages : en
Pages : 200
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Book Description
Sea squirts and sponges are found in most seafloor habitats around the coasts of Britain and Ireland. Despite being the dominant life forms in many areas, these two groups of under-recorded marine animals are often confused with one another, and most divers and snorkellers can recognise and name very few species. In fact, around 500 species of Ascidiacea (sea squirts) and Porifera (sponges) have been described so far in British and Irish seas, corresponding to over 4% of the world’s total. This book is recommended reading for anyone who wants to identify and discover more about these fascinating and diverse animals. Rather than relying on the characteristics of preserved specimens, this guide uses marine photography and detailed underwater observations to concentrate on in situ features, allowing you to record species without collecting them. Most sea squirts found in Britain and Ireland’s shallow waters are included, together with the most easily recognised sponges. Whether you are a student, a diver, a rockpooler or simply an enthusiast, this is an essential companion. ● Over 115 species described in detail with in situ photographs to help with underwater recognition ● Information on size, depth, habitat and distribution ● Key distinguishing features and areas of confusion in identification highlighted ● Details of body structure, life histories, digestive and reproductive processes ● Information about predators, interactions between species, non-native and problem invasive species
Author: Alexander V. Ereskovsky
Publisher: Springer Science & Business Media
ISBN: 9048185750
Category : Science
Languages : en
Pages : 382
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Book Description
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.
Author: Sally Morgan
Publisher: Heinemann-Raintree Library
ISBN: 9781410910486
Category : Juvenile Nonfiction
Languages : en
Pages : 68
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Book Description
Classifies each kind of fish, shows each in their natural habitats, and provides facts about the fastest shark to the heaviest sturgeon.
Author: Ruth Miller
Publisher: Capstone Classroom
ISBN: 9781410913470
Category : Juvenile Nonfiction
Languages : en
Pages : 52
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Book Description
Discusses mollusks, their physical characteristics, their life cycles, their behaviors, and amazing facts about them.
