Deltatheridium

Flashback to 80 million years ago in the Gobi Desert. Deltatheridium scurried among dinosaurs. This cat-sized mammal had sharp canine teeth and triangular molars, much like those of opossums today. This early marsupial probably sunk its teeth into small lizards and insects.

Deltatheridium prerituberculare
(del-tah-ther-ID-ee-um)
Locality Found: Mongolia
Age: Cretaceous 80 MYA Size: 6 inches long
Prepared For: 2000 Museum exhibit Fighting Dinosaurs
Characteristics: Paleontologists believe that Deltatheridium was an early ancestor to modern day marsupials.

Image credits: courtesy of AMNH; quote. Mark Norell courtesy of Discovery Channel Online.