Graph showing LB1 is outlier (image) Field Museum Caption This graph shows the cranial capacities in cubic centimeters for 118 fossil hominids plotted against time, extending back almost 3.5 million years. The arrow indicates the highly incongruous value reported in Nature by Brown et al. in 2004 for Homo floresiensis, described as an insular dwarf derived from Homo erectus. The relatively tiny brain size only 18,000 years ago does not fit into known patterns of hominid brain size and development. It is "off the chart." Credit Graph by Robert D. Martin, Courtesy of The Field Museum Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.