Frontal bone fragment ofHomo erectus from Sangiran, Java

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In 1994 a hominid frontal bone fragment was found in the river floor of the Brangkal River, the Sangiran area, Central Java. The original stratigraphic level is not known at present stage of the research. But it is possible that the bone was derived from the Grenzbank zone of the Bapang Formation (Lower/Middle Pleistocene). Morphological features of the bone, such as a thick and continuous supraorbital torus, a wide and flat supratoral plane, and a flat and strongly inclined frontal squame suggest that the bone is assigned to JavaneseHomo erectus, especially to the Sangiran and Trinil group of it.