Paleontology US blog.

Therapsida is a group of synapsids that includes mammals and their ancestors. Many of the traits today seen as unique to mammals had their origin within...

Between about 220 and 65 million years ago, dinosaurs on what's now the Colorado Plateau endured dramatic geologic and climatic changes that...

Tyrannosaurus Tyrannosaurus (meaning “tyrant lizard”, from the Ancient Greek tyrannos (τύραννος), “tyrant”, and sauros (σαῦρος), “lizard”) is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex (rex meaning...

What is a Paleontologist? Paleontology is the science dealing with the fossils of long-deceased animals and plants that lived...

Acrocanthosaurus Acrocanthosaurus (meaning “high-spined lizard”) is a genus of theropod dinosaur that existed in what is now North America during...