New research sheds light on an old fossil solving an evolutionary mystery

Picrodontids — an extinct family of placental mammals that lived several million years after the extinction of the dinosaurs — are not primates as previously believed.

​Picrodontids — an extinct family of placental mammals that lived several million years after the extinction of the dinosaurs — are not primates as previously believed. Picrodontids — an extinct family of placental mammals that lived several million years after the extinction of the dinosaurs — are not primates as previously believed.