 For example, Mary Leakey's famous find of 1948 began as "africanus" and was split from it to be lumped with Thomas Whitworth's finds of 1951 as "heseloni" by Alan Walker in 1993.The family of Proconsulidae was first proposed by Louis Leakey, eleven years after he and Wilfrid Le Gros Clark had defined "africanus", "nyanzae" and "major".It was not immediately accepted but ultimately prevailed.