Bistahieversor (Navajo/Greek for "Bistahi destroyer"); pronounced bis-TAH-hee-eh-VER-sore
Woodlands of southern North America
Late Cretaceous (75 million years ago)
Size and Weight:
About 30 feet long and one ton
Oddly shaped skull; 64 teeth in mouth
Bistahieversor must have been standing behind the door when all the good (and pronounceable) dinosaur names were being given out, but this late Cretaceous tyrannosaur (the first to be discovered in North America in over three decades) still ranks as an important find. The odd thing about this mid-sized, one-ton carnivore is that it had even more teeth than its famous cousin, Tyrannosaurus Rex, 64 compared to 54, as well as some strange skeletal features (such as an opening in the skull above each eye) that are still being puzzled over by experts.