Lemur-Like Toes Complicate Human Lineage (Live Science)
Updated: Mar 6, 2018
A 47-million-year-old primate may have been a fashionista of sorts, as new analysis of the fossil suggests it sported grooming claws.
Besides helping the primate rake through its fur, particularly in hard-to-reach spots, the grooming claw presents a puzzle of sorts for scientists studying the relationship between a group that includes humans, apes and monkeys, and the family that includes lemurs. That's because the primate is the first extinct North American primate with a toe bone showing features associated with the presence of both nails and a grooming claw.