Proteomics of fossils yields evidence of collagen

摘要

John Asara, Mary Schweitzer, and colleagues at Harvard Medical School, North Carolina State University, Montana State University, and the University of Chicago have detected evidence for the presence of protein in fossils from a 160,000-600,000-year-old mastodon and a 68 million-year-old Tyrannosaurus rex. In back-to-back papers, the researchers report that they have extracted organic material from a mastodon skull and a T. rex femur and analyzed the samples with a range of techniques.