Scientists of the University of Vienna have examined parts of a vertebral column found in northern Spain in 1996, and assigned it to the extinct shark group Ptychodontidae. In contrast to teeth, shark vertebrae bear biological information like body size, growth and age, which allowed the team of Patrick L. Jambura to gain new insights into the biology of this mysterious shark group.
Click here for original story, Giant ‘teenager’ shark from the dinosaur era identified from vertebrae remains
Source: Phys.org