Endocasts: possibilities and limitations for the interpretation of human brain evolution

Area of Science:

• Paleoneurology
• Human Evolution
• Paleoanthropology

Background:

• Brains are not preserved in the fossil record, making direct study impossible.
• Endocranial casts, molds of the internal braincase, are the sole direct evidence of human brain evolution.
• Paleoneurology, the study of fossil endocasts, provides limited but crucial data on brain size, shape, and surface morphology.

Purpose of the Study:

• To review new fossil endocasts and recent methodological advancements in paleoneurology.
• To discuss novel analyses of old endocasts leading to new findings and hypotheses.
• To emphasize the importance of integrating comparative data from living species for interpreting hominin brain evolution.

Main Methods:

• Analysis of new fossil endocranial casts.
• Application of recent methodological advances to analyze existing endocasts.
• Comparative analysis with brains and behavior of living species.

Main Results:

• New fossil endocasts provide additional data points for studying hominin brain evolution.
• Methodological advances enable more detailed and novel analyses of endocranial morphology.
• Intriguing findings and hypotheses regarding brain evolution have emerged from recent studies.

Conclusions:

• Endocranial casts are vital for understanding human brain evolution, offering insights into size, shape, and surface features.
• Integrating paleoneurological data with comparative studies of living species is crucial for robust interpretations.
• Future research should focus on interdisciplinary approaches to enhance our understanding of hominin brain evolution.