Taxonomy is the science of the description and classification of Organisms, essential in Theoretical and Applied Biology. Aristotle is credited with creating the first classification system more than 2,000 years ago. He classified living things as plants or animals according to their appearance. Later on Carolus Linnaeus, a Swedish naturalist began to classify all living things by proposing a binomial, or two-name system which is unanimously accepted globally and being followed to date. About 1.7 million species have been named since Linnaeus and it is estimated that only around 5-10% of the world's biota has been described so far. In recent years modern taxonomists consider that gross morphological characteristics are not always sufficient to provide means of differentiation in determining the genetic and evolutionary relationship between taxa. To achieve this taxonomical evidence Anatomy, Embryology, Palynology, Cytology, Palaeobotany, Ecology, Biochemistry, etc. are being considered to confirm or describe the species. Under these circumstances, it is a prerequisite to discuss the recent developments in taxonomical research on fauna around the globe.