60,000-year-old ostrich eggshell engravings reveal early human cognitive development
Researchers discover that geometric engravings on 60,000-year-old ostrich eggshells shed light on the early development of human intelligence.
160,000-year-old artworks
Engravings on ostrich eggshells found at archaeological sites in South Africa and Namibia reveal that Homo sapiens living 60,000 years ago possessed surprisingly advanced mental capacities. A team led by the University of Bologna discovered these markings were not random scratches but followed specific geometric principles. Published in PLOS One, the study reveals a complex 'visual language' containing parallel lines, right angles, and repeating patterns.
2Systematic analysis methods
Researchers applied novel geometric and statistical analysis techniques to 112 fragments found at Diepkloof and Klipdrift sites in South Africa and Apollo 11 in Namibia. They reconstructed the directions, angles, and paths of engraved lines. Results showed over 80% of configurations contained consistent spatial patterns, with 90-degree angles and parallel line sets frequently repeating.
3Complex geometric patterns
More elaborate designs like hatched bands, grids, and diamond-shaped motifs showed evidence of advanced techniques including rotation, translation, repetition, and embedding. According to Silvia Ferrara, these engravings represent not just repeating signs but a true 'visual language' capable of creating hierarchical levels. Artists could visualize complete figures mentally before engraving them.
4Use as water containers
Ostrich eggshells were likely used to carry or store water, but their engravings appear to have symbolic rather than practical meaning. These findings suggest early humans developed abstract thinking beyond daily needs. Valentina Decembrini emphasizes this ability connects to the origins of writing systems.
5Origins of abstract thought
The research demonstrates humans 60,000 years ago could organize visual space according to abstract principles. The ability to transform simple forms into complex systems following defined rules has played a decisive role throughout human history, from decoration creation to symbolic systems and ultimately writing.
6International collaboration
The study was conducted as part of the SAPIENCE project directed by Professor Silvia Ferrara at the University of Bologna, in collaboration with Professor Enza Spinapolice from Sapienza University of Rome. Supported by FIS Advanced, the project investigates the origins of symbols, preliterate communication, and code evolution. Findings provide new insights into early human cognitive evolution.
7Innovation in archaeological methodology
This study adopted a novel methodological approach in artifact analysis. Using geometric and statistical techniques previously not applied to such objects, researchers gained significant clues about human mind evolution. The team notes these methods could also examine other prehistoric artworks.
8Discovery illuminating human evolution
The 60,000-year-old ostrich eggshell engravings document a critical turning point in human cognitive evolution. These findings show abstract thinking emerged much earlier than presumed and foundations of complex visual language were being laid. Such archaeological evidence becomes increasingly important for understanding the origins of human cognitive abilities.