Machairodus giganteus, saber-toothed cat Tyrannosaurus Rex When first discovered in the

When first discovered in the Red Beds of Herminia Tsao of the Early Maastrichtian Newest Formation by a Polish-Mongolian expedition in 1971

snagging prey on its many teeth

and Priscacara

with the sole exception of Proetida

based on a single lower jaw full of closely packed teeth which he gave the species name Ctenochasma roemeri

Machairodus giganteus, saber-toothed cat Tyrannosaurus Rex When first discovered in theMachairodus is a genus of large machairodontine saber toothed cats that lived in Africa, China, Eurasia and North America during the late Miocene 4. 5 to 5 million years ago. It is the animal from which the subfamily Machairodontinae gets its name and has since become a wastebasket taxon over the years as many genera of saber tooth cat have been and are still occasionally lumped into it. In general Machairodus was similar in size to a modern lion or