Maelestes gobiensis

Maelestes gobiensis is a species of prehistoric shrew-like mammal discovered in 1997 in the Gobi Desert. The animal lived in the late Cretaceous Period, around 71-75 million years ago, and was a contemporary of dinosaurs such as Velociraptor and Oviraptor. The discovery and analysis of this species suggests that true placental mammals appeared during the time the dinosaurs went extinct 65 million years ago, not earlier in the Cretaceous as previously thought.