image: This is a 380-million-year-old fossil of the predatory placoderm fish Eastmanosteus from the Gogo site in Western Australia. Preserved muscle fibers found from this species were used in the new study. This image relates to a paper that appeared in the June 13, 2013, issue of Science Express, published by AAAS. The paper, by Kate Trinajstic at Curtin University in Perth, WA, Australia, and colleagues was titled, "Fossil Musculature of the Most Primitive Jawed Vertebrates." view more
Credit: [Image courtesy of John A. Long]