Outstanding ancient Greek scientist Aristotle made the first classification of animals, which he divided into two groups: with blood, and without blo

Animal classification facts [Interesting, Amazing]

Outstanding ancient Greek scientist Aristotle made the first classification of animals, which he divided into two groups: with blood, and without blood (he believed that the blood can be only red). Animals with blood, he, in turn, divided into live-bearing legless (cetaceans) and viviparous quadrupeds (the other mammals), oviparous and ovoviviparous tetrapods (amphibians, reptiles, birds) and legless oviparous (fish).

Prominent Swedish scientist Carl Linnaeus (1707-1778) in his book “System of Nature” described and classified more than 4000 species of animals. He divided all animals into 6 classes: beasts (i.e. mammals), birds, amphibians (this class contained amphibians and reptiles), fish, insects and worms. The animals, which he failed to organize, he referred to an artificial group of “chaos”.

Linnaeus system of animals later was revised by the eminent French scientist Jean-Baptiste Lamarck (1744-1829). He first divided the animals in invertebrates and vertebrates, highlighting the 16 classes, instead of the 6 proposed by C. Linnaeus.

Another prominent French scientist Georges Cuvier (1769-1832), using the comparative anatomical method of animals research (i.e. highlighting common features and similar organisms), divided all classes of animals into four major groups: radiant, segmented animals, mollusks and vertebrates which later became known as phylums. Taken from http://worldofschool.org

In the scientific literature after the species name usually follows the name of the scientist who described it, and the year when the species was described. For example, a full international name of bison is: Bison bonasus Linnaeus, 1758. This means that the species was described in 1758 by C. Linnaeus. This is necessary in order to make it impossible to describe the same species under different names.