Simplify the following text for a Grade 12 native English-speaking person.
Original: Extant amphibians fall into one of three orders - the Anura ( frogs , including toads ) , the Caudata or Urodela ( salamanders , including newts ) , and the Gymnophiona or Apoda ( the limbless caecilians ) .
Simplified: Extant amphibians fall into one of three orders â '' the Anura ( frogs and toads ) , the Caudata or Urodela ( salamanders and newts ) , and the Gymnophiona or Apoda ( the limbless caecilians ) .