a. Homo neanderthalensis, Homo heidelbergensis, and maybe Homo floresiensis Homo heidelbergensis is an extinct, potentially distinct species of the genus Homo and may be the direct ancestor of H. neanderthalensis in Europe and H.floresiensis fits into the family tree of hominins which includes those species that evolved after the human lineage (of the genus Homo) split from the chimpanzees. Solution a. Homo neanderthalensis, Homo heidelbergensis, and maybe Homo floresiensis Homo heidelbergensis is an extinct, potentially distinct species of the genus Homo and may be the direct ancestor of H. neanderthalensis in Europe and H.floresiensis fits into the family tree of hominins which includes those species that evolved after the human lineage (of the genus Homo) split from the chimpanzees..