- Amphibian - Wikipedia
Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia In its broadest sense, it is a paraphyletic group encompassing all tetrapods, but excluding the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals)
- Amphibian | Characteristics, Life Cycle, Facts | Britannica
amphibian, (class Amphibia), any member of the group of vertebrate animals characterized by their ability to exploit both aquatic and terrestrial habitats
- Amphibians – Definition, Examples, Characteristics
Amphibians are ectothermic (cold-blooded) vertebrates that belong to the Class Amphibia A defining characteristics is their ability to live both in aquatic and terrestrial environments
- Amphibian - Adaptation, Metamorphosis, Ecology | Britannica
The three living groups of amphibians have distinct evolutionary lineages and exhibit a diverse range of life histories The breeding behaviour of each group is outlined below
- Amphibian Pictures Facts - National Geographic
Amphibians are small vertebrates that need water, or a moist environment, to survive The species in this group include frogs, toads, salamanders, and newts All can breathe and absorb water
- Amphibians - National Wildlife Federation
Explore facts and photos about amphibians found in the United States Learn about their range, habitat, diet, life history, and more
- Amphibians Portal | Britannica
Some species of amphibians have picked sides, however, and dwell exclusively in the water or on land Today's amphibians include frogs and toads, newts and salamanders, and the wormlike amphibians known as caecilians
- Amphibian - Adaptation, Metamorphosis, Ecology | Britannica
Although the structure of the muscular, skeletal, and other anatomical systems are specifically modified for each group, amphibians are often set apart from other groups of animals by their characteristic skin, or integument, and evolutionary advances in vision and hearing
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