- 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.
- Biology of Chordates
- Previews the video showing vertebrate evolution from BioMedia Associates. With images and ordering information.
- 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
- 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 and Environmental Education Research Phylum Chordata
- Presents the distinguishing features of the members of the group as well as the major subdivisions. Includes references.
- 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.
- Phylum Chordata
- Examines the morphology, digestive, reproductive, respiratory and circulatory systems of the chordates.
- Reptiles and Amphibians
- Lists web sites with short descriptions. With photos.
- Reptiles and Amphibians
- Shows pictures and links.
- 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.
- Who's Who in the Vertebrates?
- Contains information on diversity of species. With chart, table, and timeline.
- 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.
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