This artist's interpretation shows 190-million-year-old nests, eggs, hatchlings and adults of the prosauropod dinosaur Massospondylus in Golden Gate Highlands National Park, South Africa. While the mother dinos likely were 20 feet (6 meters) long, while their eggs were only 2.3 - 2.7 inches (6 to 7 cm) wide.
This is a handprint of the baby dinosaur Massospondylus from the nesting site in South Africa. The handprint shows that the hatchlings walked on all fours, whereas the adults are known to be bipedal.
Paleontologists Robert Reisz and David Evans excavate dinosaur nests from the site in South Africa. Because the nests, and the eggs and embryos inside, are so delicate, the researchers had to encase them in plaster and fabric to protect the contents during removal from the rock.
Protecting the Nests
Once removed from the rocky environment, the dinosaur nests of the prosauropod Massospondylus were brought back to the lab where Reisz and Evans, and their colleagues, could analyze them more closely.