Name: Kimbetopsalis simmonsae
Meaning: "Simmon's cutting shears of Kimbeto Wash" in recognition of mammal paleontologist Nancy Simmons, the place where the fossils were found, and the snipping front teeth of the beast.
Age: Around 64.5 million years old.
Where in the world?: The San Juan Basin of northern New Mexico.
What sort of critter?: One of the multituberculates, a superficially rodent-like and long-lived group of extinct mammals.
Size: Estimated at around three feet long and over 22 pounds.
How much of the creature’s body is known?: A partial skull and elements of the upper jaws, including teeth still in their sockets.
Claim to fame: Multituberculates were one of evolution's greatest success stories. That may ...