Massospondylus was named in 1854 by anatomist Sir Richard Owen. Hundreds of fossils of Massospondylus have been found throughout South Africa‚ ranging in size and age. James Kitching discovered fossil eggs and embryos in the Golden Gate National Park in the eastern Free State in 1976. They were herbivores.
Chapelle started researching Massospondylus as an honours student and conducted most of her field work in the Free State‚ Eastern Cape and Lesotho. She was able to examine tiny features of the brain‚ such as the nerves and the organs of the inner ear. Chapelle said studying the inner ear can show how the Massospondylus moved.
Massospondylus babies weighed less than 100g but grew to be half-tonne adults.
“You can actually see tiny replacement teeth in the bones of the jaws‚ showing us that Massospondylus continuously replaced its teeth‚ like crocodiles do‚ but unlike humans that can only do it once‚” Chapelle said.
“I was amazed when I started digitally reconstructing Massospondylus’s skull and found all these features that had never been described.”
Her research was published on Friday in the open-access academic journal PeerJ‚ where you can view or download the 3D surface file if you want to print the skull at home.
Chapelle is using the CT technology to study additional fossils for her PhD.
“It just goes to show that researchers still have a lot to learn about South Africa’s dinosaurs.”