In anthropology, taxonomy refers to the classification of human beings based on physical features that can be seen from afar (such as main shape, skin color, hair shape, body structure and length). Anthropologists used taxonomic models to classify people from different ethnic regions into different races and races throughout the nineteenth and early twentieth centuries.(such as the negroid race, Caucasian race, mongoloid race, Australoid race, and Capoid race, which were the racial classification system until raccoon s. Carleton in 1962)