Original: He personally chose three female researchers, Jane Goodall, Dian Fossey, and Birute Galdikas, who were later dubbed 'Leakey's Angels' and each went on to become important scholars in the field of primatology.
Simplified: He chose three female researchers: Jane Goodall, Dian Fossey, and Birute Galdikas. They were dubbed 'Leakey's Angels'.