👉 Silometopoides is a genus of extinct mammals that lived during the Late Cretaceous period, around 56-38 million years ago. They are known for their large, highly developed skulls with numerous deep creases and grooves on their faces. This type of skull was characteristic of certain dinosaur species such as Tyrannosaurus rex and Velociraptor, but they were also found in the Mesozoic era, which is a period from about 196