A 300-million-year-old brain of a relative of sharks and ratfish has been revealed by French and American scientists using synchrotron holotomography. It is the first time that the soft tissue of such an old fossil brain has ever been found.
A 300-million-year-old brain of a relative of sharks and ratfish has been revealed by French and American scientists using synchrotron holotomography. It is the first time that the soft tissue of such an old fossil brain has ever been found.