The primary difference between Anura and Urodela lies in the presence or absence of a tail in their adult forms.
Anura and Urodela are two distinct orders within the class Amphibia, each characterized by unique physical traits that differentiate their members. The most notable distinction concerns the presence or absence of a tail.
Key Differences Between Anura and Urodela
- Anura: This order includes all species of frogs and toads. A defining characteristic of adult anurans is their tailless nature. They are typically well-adapted for jumping, possessing long, powerful hind legs.
- Urodela: This order encompasses salamanders and newts. Unlike anurans, adult urodeles retain a prominent tail throughout their lives. They typically have elongated bodies and four equally sized limbs, moving with a more reptilian-like gait.
Anura vs. Urodela: A Comparative Overview
| Feature | Anura | Urodela |
|---|---|---|
| Common Members | Frogs, Toads | Salamanders, Newts |
| Tail in Adults | Absent (tailless) | Present (tailed) |
| Body Shape | Compact, short body | Elongated body |
| Locomotion | Primarily jumping, strong hind legs | Walking/waving tail, four equal limbs |
