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The Chordate category includes sites devoted to the organisms in the Phylum Craniata (our phylum), Phylum Cephalochordata, and Phylum Urochordata. Included in this category are the vertebrate classes fish, amphibians, reptiles, mammals and birds.
| Dinosaurs@ | Chordata |
| Herpetology | Ichthyology |
| Mammalogy | Ornithology |
| Tunicates@ | Vertebrate Paleontology@ |
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