New fossil hominid calvaria from Indonesia - Sambungmacan 3

A morphologically distinct partial calvaria of Homo cf. erectus from Java, Indonesia is described. The fossil hominid Sambungmacan 3 (Sm 3) was first discovered in 1977 from the banks of the Solo River near the village of Pol oyo, Sambungmacan district, in central Java. It was later recovered in a Ne w York City natural history establishment in 1999 and quickly returned to t he Indonesian authorities. Examination of Sm 3 shows that the calvaria is w ell preserved with only portions of the cranial base missing. The most stri king characteristics of Sm 3 include: the presence of a vertically rising f orehead, more open occipital/nuchal and frontal angles, a more globular vau lt, and a cranial capacity within the Homo erectus range. Most notably abse nt in Sm 3 are a number of the classic characters attributed to Homo erectu s, such as a strongly expressed angular torus and a continuous supratoral s ulcus. The absence of such characters would normally place the calvaria out side the range of Homo erectus (sensu stricto), however, overall quantitati ve and qualitative morphological assessments of Sm 3 place it within the Ho mo erectus spectrum. The combination of the morphological characters in Sm 3 may be interpreted in several ways: 1.) the known cranial variation of H. erectus from Indonesia and China is extended; 2.) this calvaria shows evid ence of evolutionary change within H. erectus; or 3.) more than one species of Homo existed in the (presumed) Middle Pleistocene of Java.) Anat Rec 26 2:344-368, 2001. (C) 2001 Wiley-Liss, Inc.