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A newt is a salamander in the subfamily Pleurodelinae. The terrestrial juvenile phase is called an eft. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats. Not all aquatic salamanders are considered newts, however.
The red eft (juvenile) stage is a bright orangish-red, with darker red spots outlined in black. An eastern newt can have as many as 21 of these spots. The pattern of these spots differs among the subspecies. An eastern newt's time to get from larva to eft is about three months.
They looked like robust modern salamanders but lacked a number of anatomical features that characterise all modern salamanders. [ 105 ] The two groups of extant salamanders are the Cryptobranchoidea (which includes Asiatic and giant salamanders) and the Salamandroidea (which includes all other living salamanders), also known as ...
Scientists have revealed fossils of a giant salamanderlike beast with sharp fangs that ruled waters before the first dinosaurs arrived. The predator, which was larger than a person, likely used ...
The red salamander has more spots and the spots also tend to be larger in size than those of the mud salamander. The spots on P. ruber are also said to overlap in many areas, whereas mud salamanders rarely, if ever, do. [9] In regard to eye color, the red salamander's iris is a gold-like tint, whereas the mud salamander's iris is brown. [2]
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.
The alpine newt (Ichthyosaura alpestris) is a species of newt native to continental Europe and introduced to Great Britain and New Zealand. Adults measure 7–12 cm (2.8–4.7 in) and are usually dark grey to blue on the back and sides, with an orange belly and throat.
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