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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 from the group Caudata. [2]
Adult lungless salamanders have four limbs, with four toes on the fore limbs, and usually with five on the hind limbs. Within many species, mating and reproduction occur solely on land. Accordingly, many species also lack an aquatic larval stage, a phenomenon known as direct development in which the offspring hatch as fully-formed, miniature ...
A sub-adult wandering salamander. The wandering salamander is a long, slender salamander that grows to a snout-vent length of approximately 80 millimetres (3.1 in) and a total length of 130 millimetres (5.1 in). [6] [7] Its base color ranges from brown to light grey, with lighter bronze-grey mottling distributed across its dorsal surface ...
Salamandridae is a family of salamanders consisting of true salamanders and newts. Salamandrids are distinguished from other salamanders by the lack of rib or costal grooves along the sides of their bodies and by their rough skin. Their skin is very granular because of the number of poison glands. They also lack nasolabial grooves.
Two-toed amphiumas are the most prominent in the Amphiumidae family and the longest salamander species in the United States, [4] that can grow from 39 to 1,042 g (1.4 to 36.8 oz) in mass and from 34.8 to 116 cm (13.7 to 45.7 in) in length.
The red-backed salamander (Plethodon cinereus) is a small, hardy woodland salamander species in the family Plethodontidae.It is also known as the redback salamander, [3] eastern red-backed salamander, [3] or the northern red-backed salamander to distinguish it from the southern red-backed salamander (Plethodon serratus).
Sirenidae, the sirens, are a family of neotenic aquatic salamanders. Family members have very small fore limbs and lack hind limbs altogether. [1] In one species, the skeleton in their fore limbs is made of only cartilage. In contrast to most other salamanders, they have external gills bunched together on the neck in both larval and adult
Amphiumas have an elongated body, generally grey-black in color. They do have legs, but they are merely vestigial and very small. While amphiumas can be up to 116 cm (46 in) long, their legs measure only up to about 2 cm (0.79 in). It is because of this that they are often mistaken for eels or snakes. They also lack eyelids and a tongue. [7]