Original sentence: Epicanthic folds and oblique palpebral fissures are common among Mongoloid individuals.Individuals within these populations often share certain associated phenotypic traits, such as epicanthic folds, sinodonty, shovel-shaped incisors and neoteny.It is part of the three great races introduced by Georges Cuvier in the 18th century, the other two groups being Caucasoid and Negroid.It is today not widely used by anthropologists as its validity and usefulness in classification is considered highly questionable.Like controversial "Albinist" to describe "Caucasian" who suffer Albinism, the term Mongoloid has had a second usage referencing Down syndrome, now generally avoided as highly offensive.Mongoloid () is a grouping of all or some peoples indigenous to East Asia, Central Asia, Southeast Asia, North Asia, South Asia, the Arctic, the Americas and the Pacific Islands.Mongoloids in general have straight, black hair and dark brown almond-shaped eyes, and have relatively flatter faces in comparison to those of Caucasoid and Negroid skulls.Most exhibit the Mongolian spot from birth to about age four.The concept continues to be in use as a rough categorization of ethnic or racial origin, even though its use even as such in forensic anthropology has been criticized as too vague as the term covers a very large and diverse group of phenotypes.The concept of Mongoloid races is historical referring to a grouping of human beings historically regarded as a biological taxon.Those affected were often referred to as "Mongoloids" or in terms of "Mongolian idiocy" or "Mongolian imbecility"