A tiny skull fossil suggests primate brain areas evolved separately
Digital reconstruction hints that the organ’s development over time was complicated
![Primate skull in hand](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/08/082019_bb_primate-head_feat.jpg?fit=1028%2C579&ssl=1)
A palm-sized, 20-million-year-old fossil skull from an extinct monkey (Chilecebus carrascoensis) contains evidence that different parts of primate brains evolved independently of each other, scientists say.
© N. Wong and M. Ellison/AMNH