Biology

The Phylum Mollusca The Phylum Mollusca- Introduction to these organisms, with photographs and information on the various classes and their biology. Mollusks: Phylum Mollusca Mollusks: Phylum Mollusca- A diverse group of animals that include cephalopods (squid, octopuses, cuttlefish), gastropods (nudibranchs, snails, slugs, limpets, sea hares) and biva… Seashells of New South Wales Seashells of New South Wales- A guide to the sea shells of New South Wales, Australia, with high quality images and detailed information. Keys to the Mollusks of the Hawaiian Islands Keys to the Mollusks of the Hawaiian Islands- Identification guide to Hawaiian bivalves and gastropods. Catalogue of Mediterranean Seashells Catalogue of Mediterranean Seashells- Listing of major taxa in the region in all molluscan classes with line drawings of some species. Mollusca Mollusca- Information from the Tree of Life Project about mollusk systematics with references and links. Alabama Mollusks Alabama Mollusks- Overview of endangered, common, and exotic freshwater and marine bivalves and gastropods. An Identification Manual for the Freshwater Snails of Florida An Identification Manual for the Freshwater Snails of Florida- Provides a key to the freshwater bivalves and gastropods of the south east US. Mollusks of San Salvador, Bahamas Mollusks of San Salvador, Bahamas- Photos of representatives of the major families of bivalves and gastropods. Lophophore Lophophore- Information from Wikipedia on the characteristic feeding organ possessed by the three major phyla Brachiopoda, Bryozoa and Phoronida. The Lophophore The Lophophore- Information on this complex feeding structure possessed by members of the groups Brachiopoda, Bryozoa, and Phoronida and the likelihood that they must therefore be… Kinorhyncha Kinorhyncha- Illustration and information from the Tree of Life Web Project. Wikipedia: Kinorhyncha Wikipedia: Kinorhyncha- Encyclopedia article on these marine invertebrates including their anatomy, classification and taxonomy. Phylum Kinorhyncha Phylum Kinorhyncha- Description of this invertebrate phylum. Kinorhyncha Kinorhyncha- Anatomical diagrams. Phylum Hemichordata Phylum Hemichordata- Brief description of the phylum with images of some fossil species. The Phylum Hemichordata The Phylum Hemichordata- An introduction to the hemichordates including their characteristics and the two classes Enteropneusta and Pterobranchia. Hemichordata Hemichordata- Information from Wikipedia on this phylum of worm-shaped marine deuterostome organisms. Hemichordata (Acorn Worms and Pterobranchs) Hemichordata (Acorn Worms and Pterobranchs)- Photograph of an acorn worm (Saccoglossus kowalevskii). Introduction to the Hemichordata Introduction to the Hemichordata- UCMP Berkeley's introduction to the acorn worms. Includes information on graptolites. Phylum Gnathostomulida Phylum Gnathostomulida- Images of some members of this taxonomic group. The Sand Worms (Phylum Gnathostomula) The Sand Worms (Phylum Gnathostomula)- Description of the tiny marine worms in this phylum and the characteristics that distinguish them from other worms. Wikipedia: Gastrotrich Wikipedia: Gastrotrich- Encyclopedia article including anatomy, reproduction and taxonomy. Gastrotricha Gastrotricha- Photograph and classification from the Tree of Life Web Project. Gastrotricha World Portal Gastrotricha World Portal- Detailed information about these small aquatic organisms, including overview, systematics, evolution, checklists, photos, and movies. Echiura Echiura- Wikipedia article on this group of marine worms that burrow into mud or sand or live in empty shells. Introduction to the Echiura Introduction to the Echiura- Introduction to this small phylum, closely related to the Annelids, from UCMP Berkeley. The Echinoid Directory The Echinoid Directory- Project based at the Natural History Museum, London, aiming to provide information for amateurs and the scientific community on this major group of marine … Phylum Echinodermata Phylum Echinodermata- Some characteristics of the phylum that includes starfish, sea cucumbers, sea urchins, crinoids and brittle stars. Galaxy of Images: Starfish, Sea Lilies and Other Echinoderms Galaxy of Images: Starfish, Sea Lilies and Other Echinoderms- Provides images from the printed books and manuscripts in the collections of the Smithsonian Institution Libraries. Gallery of Echinoderm Larvae Gallery of Echinoderm Larvae- A collection of photographs of developing starfish and sea urchins with information about each. Echinodermata Echinodermata- Characteristics and phylogeny of the spiny-skinned animals: sea urchins, starfish, and their allies. Introduction to the Echinodermata Introduction to the Echinodermata- Overview of the systematics and ecology of starfish, brittle stars, sea cucumbers, sea urchins, and sand dollars. Sea and Sky: Echinoderms Sea and Sky: Echinoderms- A brief description of the phylum followed by a long list of annotated photographs. Echinoderms Echinoderms- Descriptions of the major species of Echinodermata (starfish, brittle star, sea urchin, feather star, sea cucumber) with illustrations and links to photos. Phylum Chordata Phylum Chordata- Brief introduction to the chordates, defined as organisms that possess a structure called a notochord, at least during some part of their development. Includes li… Subphylum Vertebrata Subphylum Vertebrata- What makes a vertebrate a vertebrate? They have more in common than a backbone. Find out more from the Animal Diversity Web. Tree of Life: Gnathostomata Tree of Life: Gnathostomata- Philippe Janvier's article about this clade which differs from all other vertebrates in having a vertically biting device, the jaws. North American Wildlife North American Wildlife- Includes photographs and information on a wide range of mammals and reptiles from Canada, the United States and Mexico. Includes fact sheets and distribut… Database of Vertebrates and Centres of Vertebrate Diversity in Mozambique Database of Vertebrates and Centres of Vertebrate Diversity in Mozambique- The Database includes almost 3500 vertebrate species, taxonomic information, English, Portuguese and ver… Phylum Hemichordata, Urochordata and Cephalochordata Phylum Hemichordata, Urochordata and Cephalochordata- Illustrated description of these three phyla, and the three classes within Urochordata. Also information on the larval stages… Chordata Chordata- Overview of the taxonomy of Phylum Chordata, which includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals), hagfishes, tunicates, and lancelet… Vertebrata Vertebrata- Introduction to the vertebrates and their classification, including the Hyperoartia, or lampreys, and the Gnathostomata, or jawed vertebrates. The Chaetognath, a Strange Creature The Chaetognath, a Strange Creature- Photographic study by Jean-Marie Cavanihac of the Arrow Worm. International Bryozoology Association International Bryozoology Association- This organisation aims to encourage research and promote an exchange of knowledge on Bryozoa. Provides information on the society, membershi… The Bryozoa The Bryozoa- Brief description of the phylum with illustrations of several species. The Phylum Ectoprocta (Bryozoa) The Phylum Ectoprocta (Bryozoa)- Includes characteristics, biology and ecology. Bryozoans of the West Coast of North America Bryozoans of the West Coast of North America- Large gallery of photographs. Ectoprocta (Bryozoans) Ectoprocta (Bryozoans)- Provides biological information on these sessile, colonial suspension feeders with photographs of a Cyphonautes larva and a lacy colony of a species of Tri… Bryozoa Bryozoa- Information from Wikipedia on these colonial organisms that make hard skeletons of calcium carbonate, superficially resembling coral.