Animals Today and Their History


Let Us Figure Out For You How The Animals Have Gone Through The Evolution Stages Through Out The History!

Present Day Animals

Animal species from the whole kingdom animalia are the most common ones and they have been research and studied on multiple levels widely throughout the world. The present day species from the kingdom animalia are in millions. We cannot name them all; we cannot count them all in one sitting as it would take up all of ours and yours lives. However, to study them and also to make the study of the whole animal kingdom easy for the readers, the animalists have divided these millions of species into different heads. This division into separate heads was done on the basis of the animals’ habitat, traits, living styles, eating habits and also on the basis of their body structures and features too.

The major and the most popular division of the animals has been done as they were split into seven major heads which are most common among the people today and also are identified easily. These heads are:

  1. Reptiles
  2. Amphibians
  3. Mammals
  4. Vertebrates
  5. Fish
  6. Birds
  7. Insects

Evolutionary History of the Animals over the Time

Over the time, we have been studying and reading a lot about the animals and their enriched history. The examples here would make you understand the concept easily, by thinking on how were snakes formed or lizards formed. It was an evolutionary game, however, the history since the classical times till the present age, there is a lot filled in it to explain how happened and what happened to the animals over this time.

1.     Classical Age in the Animals’ History

The classical age within the animals’ history begins with the time of Aristotle. Aristotle was the most famous historian who had written a variety of books in his age after researching widely about animals and other nature items. He has widely produced in the field of zoology, mathematics and physics. Aristotle, in zoology, is famous for dividing the kingdom animalia into meaningful heads over the history and adding more names to it within the already discovered ones.

Initially, Aristotle divided the whole kingdom animalia into two parts which were:

  1. With blood
  2. Without blood

Two legged

According to his own understanding, he divided the species into two parts showing that some species have blood within them while others do not. Later on, another discovery by Aristotle was added to the list where he put the name of human beings up. It meant that human beings are having warm blood, two legs along with a meaningful and purposeful soul as well.

Four legged

As the time passed, he discovered more and added the tetrapods into the same discovery list. These were having a lot of similar traits and body structures such as being 4 legged was the symbol of their identity.


These are another discovered specie later on by Aristotle and been added to the history so far. Aristotle referred those animals to this group who had many legs or no blood.


Sponges are more creative and widely found creatures. They are spongy looking creatures. Firstly, even Aristotle thought as if they are not the animals but verified lately.

2.     Neo Classical Age for Animals Discovery

Neo Classical era among the animals’ evolution is said the second half of the 18th century right after the 1750s. Back in these times, the discovery was being made by the most well-known person of that era whose name was Carl (also known as) Carolus Linneaus in different scientific evolution books.

Carl Linneaus

Since after the 1758, the discovery and study industry of animals is flourishing. Carolus Linneaus give out a method of animal division or you can call is classical nomenclature. According to this method of the biological nomenclature, it becomes true and realistic to call these animals by their scientific names.

Carolus Linneaus worked on the macro level for contributing towards animals’ science. The major six heads or scientific nomenclature were given by the Carl. These six major sub headings are here:

  1. Aves or Birds
  2. Mammalia or Mammals
  3. Insecta or Insects
  4. Vermes or Vertebral column
  5. Pisces or Fish
  6. Amphibia and amphibians.

Jean Baptiste de Lamarck

Later on in 1793, J. B. Lamarck who came with adding to the Wikipedia that how the animals are keeping on a continuous growth. Three more animals’ classes were introduced to the animalia kingdom by sir J. B. Lamrack. and by the time in 1809, about 9 more phyla were added to the animalia kingdom.

3.     Modern Age of Animal Evolution

George Cuvier

Modern age of the animal evolution started right after the 1817 when the George Cuvier grouped the whole kingdom animalia on the basis of comparative anatomy into four parts which were names as:

  1. Zoophytes
  2. Articulated animals
  3. Vertebrates
  4. Molluscs

Earnest Haeckel

By the time of 1874, the well-known animalist, Earnest Haeckel  has divided the complete majestic animal kingdom into two parts and that is:

  1. Metozoa
  2. Protozoa

Since the time, the animals division has been done successfully and people study them new, make researches on different levels while exploring such creations.

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