In the late nineteenth century, anthropometric studies led to a proposition of racial groups, one of which was termed "Australioid" by Thomas Huxley in an essay 'On the Geographical Distribution of the Chief Modifications of Mankind' (1870), in which he divided humanity into four principal groups (Xanthochroic, Mongoloid, Negroid, and Australioid). Huxley also concluded that the Melanochroi (Peoples of the Mediterranean race) are of a mixture of the Xanthochroi and Australoids.
According to Peter Bellwood, "many of the present Southern Mongoloid populations of Indonesia and Malaysia also have a high degree of Australo-Melanesian genetic heritage.
One proponent, R. Ruggles Gates, argued in 1960 that "If the Ainu are partly of Australoid origin it is also clear that they are even more nearly derived from archaic Caucasian ancestry". M.K. Bhasin (2006) suggests that the "Australoids" "differentiat[ed]... perhaps from a common type before the separation of the Mongoloids and Caucasoids"
Balgir (2004)designates tribes as Australoid or Proto-Australoid according to language family:
It may be mentioned here that the major scheduled tribes of Orissa belong to three linguistic groups, namely, Indo-Aryan or Indo-Europeans, i.e. Non-Australoid, Austro-Asiatic (Mundari) speakers, i.e. Proto-Australoid, and Dravidian (Gondi or Kuvi) speakers, i.e. Australoid. Proto-Australoid racial group includes Bhumiz, Gadaba, Juang, Kharia, Koda, Kolha, Mahali, Mirdha, Munda, Santal and Saora tribes. Tribes like Bathudi, Bhatra, Binjhal, Bhuyan, Lodha and Saunti belong to non-Australoid racial stock while Australoid racial stock is represented by Gond, Kondh, Kissan, Oraon, Paraja and Pentia Halva tribes.
Kashyap (2006) designates 23 out of 54 Indian populations studied as Australoid, of which one speaks an Indo-European language (Dhangar of Maharashtra), 4 speak Austro-Asiatic languages (Kurmi of Uttar Pradesh, Bihar Kurmi of Bihar, and Juang and Saora of Orissa), and 18 speak Dravidian languages. 7 populations were designated as Mongoloid, and the remaining 24 as Caucasoid. No Proto-Australoid category was used.
One of earliest skulls recovered by archaeologists is a specimen scientists have named Lucia.
According to archaeologist Walter Neves of the University of São Paulo, detailed measurements of the skull revealed that Lucia "was anything but Mongoloid." Further, when a forensic artist reconstructed Lucia's face, "the result was surprising: 'It had all the features of a Negroid face"....
Some scientists believe these Australoid first Americans later were displaced relatively recently by peoples with more Mongoloid, or East Asian, characteristics approximately 7,000 to 9,000 years ago. Such scientists argue that a small number of Australoid peoples living in Tierra del Fuego are thought to be the only remaining survivors of these earliest known Americans.
The pre-European Fuegeans, who lived stone age-style lives until this century, show hybrid skull features which could have resulted from intermarrying between mongoloid and negroid peoples. Their rituals and traditions also bear some resemblance to the ancient rock art in Brazil."....