Oregon State University anthropologist Rob Bonnichsen thinks the latter is a possibility, which would explain why some ancient American tools are more similar to European ones than to Asian ones.
Anthropologist Rob Bonnichsen has been at Oregon State University for 10 years.
mnli hypothesis: Anthropologist Rob Bonnichsen has been at Oregon State University for 10 years. premise: Oregon State University anthropologist Rob Bonnichsen thinks the latter is a possibility, which would explain why some ancient American tools are more similar to European ones than to Asian ones.