A skull from Georgia suggests that all early humans were a single species

[riazur]

The analysis of a 1.8-million-year-old skull found in a region of Georgia suggests that the earliest members of the Homo genus actually belonged to the same species. The skull was discovered alongside the remains of four other early human ancestors, but had different physical features despite being from the same time period and location.

Researchers have traditionally used variation among Homo fossils to define separate species, but now think that early, diverse Homo fossils from Africa actually represent members of a single, evolving lineage — they just looked different from one another.