Byronosaurus skull
About 80 million years ago, this long and narrow skull filled with sharp teeth belonged to a dinosaur that lived in the Gobi. This theropod gives important clues about the evolution of birds. Since its large eyes faced forward, it was easily able to zero in on its prey.
Deltatheridium skeleton
This cat-sized mammal was discovered at Ukhaa Tolgod. By studying its small skull and skeleton, scientists figured out that Deltatheridium is closely related to the opossum. If you look closely at its mouth, you'll see a long front tooth.
The top view of this lizard's triangular head reveals its pebble-like skin texture. Gobiderma is a relative of the poisonous Gila (HEE-luh) Monster that lives today in the U.S. and Mexico.
Baby Protoceratops skeleton
This dinosaur was related to Triceratops, and had a parrot-like beak. This dinosaur walked on four legs (you can see two), and was heavily built. If this Protoceratops had grown to adulthood, it would have grown a bony frill over its neck.
oviraptorid skull
At first this roundish fossil skull might make you think, "Huh? What's that!?" But if you look at it carefully, you can see its large eye socket in the center. It's hard to tell, but its mouth is actually pointing to the right.
Pinacosaurus skull
This plant-eating dinosaur lived in the Gobi about 80 million years ago. Can you spot its teeth? If the entire skeleton of this specimen had been preserved, you would see that its body was protected by body armor and a tail club.
troodontid nest
Towards the end of the Mesozoic Era, this nest contained more than a dozen dinosaur eggs. One of the hatchlings apparently died before it left the nest. You can see its skeleton on top of the nest. Scientists used the hatchling's bones to help them figure out the nest belonged to a troodontid dinosaur.
Kryptobaatar skeleton
This extinct rat-sized mammal had large eyes - the better to hunt at night! Although Kryptobaatar means "hidden hero," it's just a coincidence that this specimen's body is mostly hidden in the rock. Can you spot the crease or line on the top of its skull?