Order names linked to a key of that order.
| 1 | a. Tail present in adult form; front and hind legs similar in size b. No tail in adults; hind legs adapted for jumping |
Order Urodela Order Anura |
Suborder names linked to common name examples.
| 1 | a. 1 pair of limbs, anterior only b. 2 pairs of limbs |
Meantes 2 |
| 2 | a. Aquatic; eyes reduced; body not eel-like b. Not as above |
3 4 |
| 3 | a. Adults with gills b. Adults without gills but with 1 pair of open gill slits |
Proteida Cryptobranchoidea |
| 4 | a. Vomerine teeth present b. Vomerine teeth absent |
Salamandroidea Ambystomoidea |
Suborder names and common name examples:
Suborder names linked to common name examples.
| 1 | a. Pupil of eye vertical b. Pupil of eye not vertical |
2 3 |
| 2 | a. With a sharp-edged metatarsal extension b. No sharp-edged extension on hind foot; male with intromittent organ |
Anomocoela Amphicoela |
| 3 | a. Tympanum (eardrum behind eye) present; tip of tongue entire b. Tympanum absent, or, if present, then tongue notched. |
Procoela Diplasiocoela |
Suborder names and common name examples: