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Which amphibian families are included in the order Caudata?

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Study an amphibious tiger salamander of the mole salamander family Ambystomatidae in its natural habitat — Caudata Tiger salamanders (*Ambystoma tigrinum*) are widespread across much of the United States. Although they are generally black with yellow blotches, bars, spots, or even stripes, some are lighter in colour or have olive markings. Tiger salamanders belong to the mole salamander family, Ambystomatidae.

The order Caudata, which includes salamanders and newts, consists of 10 extant families. These families are categorized into three suborders based on their evolutionary and anatomical characteristics:12

Suborder Cryptobranchoidea
* Hynobiidae (Asiatic salamanders)
* Cryptobranchidae (Asiatic giant salamanders and hellbenders)

Suborder Sirenoidea
* Sirenidae (sirens and dwarf sirens)

Suborder Salamandroidea
* Ambystomatidae (mole salamanders)
* Amphiumidae (congo eels)
* Dicamptodontidae (giant salamanders)
* Plethodontidae (lungless salamanders)
* Proteidae (olms and mud puppies)
* Rhyacotritonidae (torrent salamanders)
* Salamandridae (salamanders and newts)