This list of Anuran families shows all extantfamilies of Anura. Anura is an order of animals in the class Amphibia that includesfrogs and toads. There are more than 5,000 species currently described in the order. The living Anurans are typically divided into three suborders: Archaeobatrachia, Mesobatrachiaand Neobatrachia. This classification is based on such morphological features as the number of vertebrae, the structure of the pectoral girdle, and the morphology of tadpoles.