which belong to the southern African herbivore Massospondylus. The x-rays let her reconstruct the embryonic skulls inside, down to tiny teeth the dinosaur would have either shed or reabsorbed ...

Our next fascinating discovery takes us back to the Early Jurassic, where we encounter Massospondylus (mass-oh-SPON-di-luss). This herbivorous dinosaur lived around 208 to 204 million years ago.