Living World / Dinosaurs

Did fierce, predatory dinosaurs value their family ties? In the 1920s, paleontologists working in Mongolia discovered fossilized nests, which hinted that some dinosaurs incubated their eggs. More recently, some researchers have interpreted adult and baby dinosaur tooth marks seen next to each other on the same fossilized bones as signs of shared meals (Discover, June 2003). Now a set of mid-Jurassic footprints found on the Isle of Skye in Scotland adds to the evidence for posthatchling parental care among even the most savage meat eaters.

All the track marks point in the same direction, much like ducklings following their mother, which suggests that the tracks were created by a single group of animals all at once. Clark theorizes that the beasts were headed to a nearby water’s edge for a drink or on an instructive hunting expedition. “The similarities between birds and dinosaurs have gotten a lot of attention recently,” he says. “While the reptiles would have had an even smaller brain capacity, there’s no reason they shouldn’t have been capable of similar social strategies.”