Between 280 and 200 million years ago, a group of animals evolved which would eventually give rise to mammals, including humans: the therapsids. They were first described more than 150 years ago, based on fossils from South Africa. Since then, many more fossils have been discovered.
James Kitching, one of the most talented South African fossil hunters of the 20th century, excavated many thousands of therapsids from the rocks of the Karoo (a semi-arid region of the country’s interior). He also found fossilised dinosaur eggs, but neither he nor any palaeontologist after him ever found therapsid eggs.
