This category is for sites about the study of 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.
Please only submit sites dealing with the scientific study of chordates and vertebrates here. Please submit sites dealing with the scientific study of a particular class of vertebrates to the appropriate subcategory.
Sites about individual species or groups of species should be submitted to the appropriate category of Chordata. Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site. Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.
Reptiles are cold-blooded, air-breathing vertebrates having the skin covered with scales. The class includes tortoises, turtles, lizards, snakes and the Crocodilia.
Amphibians are cold-blooded vertebrates with smooth skin. The class includes salamanders, frogs, toads and newts.
Herpetology is the scientific study of reptiles and amphibians.
Fish are cold-blooded, aquatic vertebrates breathing by means of gills and having fins supported by skeletal rods called fin-rays. The class includes the bony fishes and the cartilaginous fishes. Ichthyology is the scientific study of fish.
Birds are warm-blooded, feather-bearing, egg-laying, amniotic vertebrates having the fore-limbs modified into wings. Ornithology is the scientific study of birds.