Aquatic and Land Animal DiversityAmphibians |
What are the major groups of amphibians? |
More than 4,000 species of amphibians are known to live on Earth and are found on every continent except Antarctica, which are divided into three major groups. The following lists those groups, their order (in terms of classification), and the known number (to date) of living species:
Group |
Order |
No. of Species |
Frogs and toads |
Anura (Salientia) |
3,800 |
Salamanders and newts |
Caudata (Urodela) |
360 |
Caecilians |
Apoda (Gymnophiona) |
160 |