still highly debated, and many still believe it has ape-like placement. Subsequently, Falk unearthed an unpublished manuscript that Dart completed in 1929 in the Archives of the University of Witwatersrand, which provides a much more thorough description and analysis of the Taung endocast than Dart's earlier announcement in Nature. This was barred from being published to Dart's dismay in 1931. It remains unpublished in these archives where very few are able to appreciate it. In this writing Falk discovered that she and Dart had come to similar conclusions surrounding the evolutionary process of the brain that Taung indicates. Whereas Dart had identified only two potential sulci on the Taung endocast in 1925, he identified and illustrated 14 additional sulci in this still-unpublished monograph. There, too, Dart detailed how Taung's endocast was expanded globally in three different regions, contrary to the suggestion that he believed hominin brains evolved back-end-first, in a so-called mosaic fashion. This goes against Holloway's interpretation as he has indicated that the back area of the brain evolved before other regions of the brain, but it stands in agreement with Falk's belief that the brain evolved equally in a coordinated fashion instead. Description The fossil has most of the face and mandible with teeth and, uniquely, a natural endocast of the braincase. It is estimated to be 2.3 million years old. Originally thought to have belonged to a monkey or ape, the skull, as Dart realized, must have been positioned directly above the spine, indicating an upright posture. That is a trait seen in humans but unknown in other primates. The Taung Child was originally thought to have been about six years old at death because of the presence of deciduous teeth, but it is now believed to have been about three or four, based on studies of rates of enamel deposition on the teeth. There was some debate over the age of this creature initially because it was unclear if it grew at the speed of a human, or of an ape. Compared to an ape, it would have been aged about 4 years, and compared to a human, it would have been aged around 5–7 years old. Comparison of the Taung Child fossil to the skull of a nine-year-old modern child suggest that A. africanus had a growth rate to adolescence more similar to that of modern apes, like chimpanzees (genus Pan), than to that of