Searching for the earliest archaeological record: insights from chimpanzee material landscapes
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Investigating chimpanzee nut-cracking reveals diverse stone tool signatures. This provides insights into potential pre-core and flake archaeological records, shedding light on early tool use origins.
Area Of Science
- Human Evolutionary Studies
- Archaeology
- Primatology
Background
- The origin of tool use is a key question in human evolution, with earliest evidence found in Plio-Pleistocene core and flake technologies.
- A potential earlier phase of percussive tool use is hypothesized but lacks direct archaeological evidence.
- The archaeological signature of percussive behaviors is less understood compared to core and flake technologies.
Purpose Of The Study
- To investigate the material signature of percussive tool use by studying chimpanzee nut-cracking behavior.
- To understand how behavioral and environmental factors shape the stone tool record of percussive activities.
- To provide insights into potential signatures of pre-core and flake archaeological records.
Main Methods
- Conducted a landscape-scale study of chimpanzee (Pan troglodytes verus) material culture at the Djouroutou Chimpanzee Project in Taï Forest, Cote d'Ivoire.
- Surveyed nut-cracking sites, analyzed available nut species, and assessed raw material availability.
- Examined the resulting stone material signatures from nut-cracking activities.
Main Results
- Demonstrated how resource availability influences the material signature of nut cracking in chimpanzees.
- Revealed the diversity of material signatures associated with a purely percussive tool use record.
- Provided a basis for understanding potential archaeological signatures preceding core and flake technologies.
Conclusions
- Chimpanzee nut-cracking provides a model for understanding purely percussive stone tool use.
- The study highlights the variability in material signatures resulting from resource availability and behavior.
- Offers new expectations for identifying earlier, pre-core and flake, evidence of tool use in the human lineage.
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
Related Concept Videos
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
Phylogenetic trees illustrate the evolutionary relationships among these organisms. Scientists infer organisms’ common ancestry by evaluating shared morphological and genetic characteristics....
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
Past Periods of Warming and Cooling
In...
Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
The collection of fossils within sedimentary rocks give a record of common ancestry and often depicts the history of...
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.