10 Interesting Amphibians Facts
Read more about amphibians facts if you want to know the unique animals. They have unique characteristics that you cannot find in any other kinds of animals. You can also learn about the evolutionary history and life cycle in the following post below:
Amphibians Facts 1: group
Amphibians are categorized in three groups. Those are caecilians, frogs and toads, and newts and salamander.
Amphibians Facts 2: Frogs and toads
Frogs and toads are included as the largest group in Amphibians. They do not have tail but they have four legs. There are many kinds of frogs that you can see spreading in various rainforests. Most bright colored frogs are poisonous.
Amphibians Facts 3: Newts and salamanders
Newts and salamanders are different from frogs and toads. They have four legs but with a long tail. Salamander will like to spend most of their life in water. On the other hand, newts like to live on land. They only go to the water when breeding.
Amphibians Facts 4: Caecilians
Probably most of you do not know much about Caecilians. This group is considered as the least known amphibian. It has a very short tail with no limbs. The appearance for this animal reminds you with eels, worms or snakes. But actually Caecilians do not have relation with any of those animals.
Amphibians Facts 5: species
The identified species of amphibians until this recent day are around 5000 and 6000 species.
Amphibians Facts 6: the most diverse group
The most diverse group of amphibian is frogs and toads. They have 4,380 species with 29 families.
Amphibians Facts 7: the second most diverse group
The second most diverse group is newts and salamander. They only occupy 470 species with 10 families.
Amphibians Facts 8: the least diverse group
The least diverse group in Amphibian is Caecilians. It only has 170 species with 3 families.
Amphibians Facts 9: The first amphibians
The first amphibians appeared around the Devonian Period. It was 370 million years ago. It was the crossopterygians considered as the first amphibian in the world.
Amphibians Facts 10: a simple body structure
Compared to any other vertebrates, amphibians have a very simple body structure. Most adult amphibians have five digits on the hind limb and 4 digits the front limbs. However, caecilians do not have any limbs or digits.
There is a group of salamander which does not have any lungs. It is called as plethodontids. Many people often called this group as lungless salamander. They can be seen living in Sardinia, Central America, North American and Korea. Do you want to ask question on facts about Amphibians?