An anonymous reader writes: It's possible that one of the pivotal events in human evolution occurred around 37 million years ago, when a tiny bug-eating primate the size of a chipmunk journeyed from Asia to Africa by crossing a broad sea that connected the modern-day Atlantic and Indian oceans.
A team of international scientists think they've found evidence of this mighty migration in 14 fossilized teeth uncovered in the Southeast Asian country of Myanmar. The teeth belong to a long-extinct species the scientists have dubbed Afrasia djijidae and who bear a striking resemblance to another ancient primate uncovered in North Africa, Afrotarsius libycus.
Because Afrasia and Afrotarsius are from around the same time period and look so similar, that's a clue that the migration happened at that time — if the migration had happened earlier, the two lineages would likely have diverged more visibly, according to Beard.
Once Afrasia made it to Africa, it found itself without the same kind of competition for resources from other primates that it faced in its homeland. That window of opportunity would allow Afrasia and its descendants to flourish, setting the stage for the evolution of more advanced primates in Africa — including, perhaps, humans.