A new high-resolution 3-D quantitative method for identifying bone surface modifications with implications for the...

Area of Science:

• Paleoanthropology
• Archaeology
• Taphonomy

Background:

• Bone surface modifications are key indicators of hominin behavior and ecology.
• Current methods for identifying these marks lack standardization and rely on qualitative assessments.
• Advancements in 3-D data capture offer new possibilities for analyzing these traces.

Purpose of the Study:

• To propose a universal and replicable protocol for identifying bone surface modifications using high-resolution 3-D data.
• To establish the precision and reliability of this new analytical approach.
• To improve the accuracy of taphonomic research.

Main Methods:

• Collected 3-D data using a white-light non-contact confocal profilometer.
• Analyzed data with Digital Surf's Mountains® software.
• Employed multivariate analyses to discriminate between mark types.

Main Results:

• Standardized methods yielded statistically indistinguishable results between researchers.
• Multivariate analyses accurately discriminated between stone tool cut marks and carnivore tooth marks (97.5% accuracy).
• The method showed 100% correspondence with expert macroscopic identifications on fossil specimens.

Conclusions:

• High-resolution 3-D analysis offers improved reliability and accuracy in taphonomic research.
• A standardized, replicable protocol is essential for the precise application of these techniques.
• This approach enhances the study of hominin behavior and paleoecology.