Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All ten extant salamander families are grouped together under the order Urodela, the sole surviving order from the group Caudata. Urodela is a scientific Latin term based on the Ancient Greek : ourà dēlē "conspicuous tail". Caudata is the Latin for "tailed ones", from : "tail".
Caudata is an ancient group of amphibians that includes all modern salamanders, which are recognizable by their lizard-like bodies, short limbs, and distinctive tails that persist throughout their lives. Understanding Caudata matters because these animals represent an important branch of amphibian evolution and help scientists study how vertebrates adapted to life both in water and on land.
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Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All ten extant salamander families are grouped together under the order Urodela, the sole surviving order from the group Caudata. Urodela is a scientific Latin term based on the Ancient Greek : ourà dēlē "conspicuous tail". Caudata is the Latin for "tailed ones", from : "tail".
Salamander diversity is highest in eastern North America, especially in the Appalachian Mountains; most species are found in the Holarctic realm, with some species present in the Neotropical realm. Salamanders never have more than four toes on their front legs and five on their rear legs, but some species have fewer digits and others lack hind limbs. Their permeable skin usually makes them reliant on habitats in or near water or other cool, damp places. Some salamander species are fully aquatic throughout their lives, some take to the water intermittently, and others are entirely terrestrial as adults.
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