Amphibians belong to the class of anamniotic, tetrapod, and ectothermic vertebrates, with branchial respiration in the larval period and pulmonary respiration in adulthood. This metamorphosis that they experience over time allowed amphibians to be the first vertebrates that managed to adapt to a semi-terrestrial life. In addition to the aforementioned development of pulmonary respiration, the changes include the appearance of extremities and sensory organs that function in both media.
Currently, scientists estimate that there are about 6,347 species of amphibians that are divided into 60 families. Orders can be mentioned such as anurans (which lack a tail, have unequal limbs and a spine adapted to the jump), caudates (with equal limbs and a tail), and gymnophions (also known as cecilias or apodes, are excavating animals that do not have legs).
When determining a classification of amphibians we find a wide typology of them. However, among the most prominent groups are the so-called nicknames, which are those defined by the fact that they do not have legs, which means that their way of moving and moving is by dragging their bodies. A clear example of this kind of animal would be, for example, the cecilia that is a species of earthworm that lives in underground areas and without light.
Another of the most important groups within amphibians is the one called urodels. Within it are those animals that are characterized because they have a visible tail, their eyes are not very developed and they have a trunk and extremities that are very elongated. Among the main examples that we can put of urodelos we would find the salamanders. Harmless to humans are those that are identified because they live in humid areas, have a tail and four legs, there are eight different families of them and they have a body where the colors yellow and orange take center stage.
However, other living beings framed within this group would be the newts, which have a yellow belly and black circular spots and are known for the fact that when they reproduce they do so from a singular dance of the male. Proteos and mermaids are other amphibians that also fall within the aforementioned group of urodels. The notion of amphibian (which means "in both environments" or "both lives") also makes it possible to refer to plants that can grow in or out of water; to vehicles that can operate in water, on land or in the air; and to military maneuvers that are carried out jointly by land, sea, and air forces.
Currently, scientists estimate that there are about 6,347 species of amphibians that are divided into 60 families. Orders can be mentioned such as anurans (which lack a tail, have unequal limbs and a spine adapted to the jump), caudates (with equal limbs and a tail), and gymnophions (also known as cecilias or apodes, are excavating animals that do not have legs).
When determining a classification of amphibians we find a wide typology of them. However, among the most prominent groups are the so-called nicknames, which are those defined by the fact that they do not have legs, which means that their way of moving and moving is by dragging their bodies. A clear example of this kind of animal would be, for example, the cecilia that is a species of earthworm that lives in underground areas and without light.
Another of the most important groups within amphibians is the one called urodels. Within it are those animals that are characterized because they have a visible tail, their eyes are not very developed and they have a trunk and extremities that are very elongated. Among the main examples that we can put of urodelos we would find the salamanders. Harmless to humans are those that are identified because they live in humid areas, have a tail and four legs, there are eight different families of them and they have a body where the colors yellow and orange take center stage.
However, other living beings framed within this group would be the newts, which have a yellow belly and black circular spots and are known for the fact that when they reproduce they do so from a singular dance of the male. Proteos and mermaids are other amphibians that also fall within the aforementioned group of urodels. The notion of amphibian (which means "in both environments" or "both lives") also makes it possible to refer to plants that can grow in or out of water; to vehicles that can operate in water, on land or in the air; and to military maneuvers that are carried out jointly by land, sea, and air forces.