Placodonts were among the first marine reptiles. With their trademark crushing teeth, they fed on shellfish and crustaceans. However, when and where these highly specialized marine reptiles originated remained unclear until now. A 246-million-year-old skull of a juvenile placodont was recently discovered in the Netherlands. Paleontologists from the universities of Zurich and Bonn have now proved that it is one of the earliest examples of this saurians and that it originated in Europe.
For around 50 million years, placodonts populated the flat coastal regions of the Tethys Ocean, in modern day Europe and China.