Chordata

• Amphibia
• Aves
• Fish
• Mammalia
• Reptilia
• Urochordata

• Animal Diversity Web Phylum Chordata  - Presents the differentiating characteristics of the members of the phylum.
• Animal Genome Size Database: Chordates  - Details information on members of the phylum that do not have a spinal cord.
• Characteristics of Chordates  - Lists the unique features of members of the phylum that it shares with what is believed to be its ancestors.
• Chordate  - Features the unique characteristics of the members of the phylum. With links to classes and subgroups.
• Chordates  - Relates phylum characteristics and information on subphyla.
• Chordates  - Offers a short lecture on the general characteristics and subdivisions of the phylum.
• Chordates From Tunicates to Humans  - Describes the common features of the members of the phylum as well as its major divisions. With links to subgroups.
• Encyclopedia.com: Chordata  - Offers definitions, related topics, newspaper and magazine articles, and videos.
• Geologic Ranges: Primitive Chordates  - Cretaceous Fossils charts the existence of various representatives of the phylum through various eras.
• Introduction to the Chordata  - Offers information on the phylum that includes humans and all the vertebrates. Includes distinguishing features.
• Introduction to the Vertebrates  - Presents the unique characteristics of the animals with backbones. With links to related sites.
• Marine Fauna Gallery of Norway Chordates  - Presents images of saltwater representatives of the phylum.
• Mikko's Phylogeny Archive Main Group of Chordates  - Presents the major subdivisions of the phylum. Includes references.
• Paleontology Portal: Hemichordates and Chordates  - Contains characteristics, earliest fossil occurrence, and access to images of fossil specimens from various eras.
• Phanerozoic Aeon 570 MYA-Present Development of Chordates Up to the Vertebrates  - Presents a discussion on animal evolution throughout the eleven periods in this particular eon.
• Reptiles and Amphibians  - Shows pictures and links.
• Reptiles and Amphibians  - Lists web sites with short descriptions. With photos.
• Reptiles and Amphibians in French  - Shows pictures and links.
• Ryan Photographic Chordates  - Provides access to a collection of images of members of the phylum.
• Science News Chordates and Vertebrates  - Provides links to articles on members of the phylum.
• Shape of Life Phylum Chordata  - Provides information on the group that includes the birds, mammals, reptiles, amphibians and fishes. With links to related sites.
• Smithsonian National Zoological Park Reptiles and Amphibians  - Discusses member species and population. With pictures, links and related events.
• South Carolina Reptiles and Amphibians  - Provides pictures and links to species in other areas of the globe.
• Tree of Life Chordata  - Describes the group that includes the mammals, fishes, amphibians, reptiles and birds.
• Vertebrate Evolution and Diversity  - Presents a course outline for teaching the subject. With links to related sites and images.
• Will's Skull Page  - Offers access to images of skulls from mammals, reptiles and birds. With descriptions and measurements.
• Zoobotanica Chordates  - Offers scientific illustrations of members of the phylum.