Ferocious dino gets wimpy name

ABC News: Huge Meat-Eating Dinosaur Discovered

Check out these headlines.
Meat-eating mega-dinosaur species found in Argentina
Scientists Find New Meat-Eating Dinosaur Bigger Than T-Rex
Jurassic Bad Boys
Pack your bags T-Rex, a new giant is movin' in
A Bigger, Badder Prehistoric Beast
After reading these headlines, you'd think they'd be about some new dino with a name to suit it - like Megasaurus or Beastosaurus or BloodDrippingBigTeethosaurus. You get the picture. I don't pretend to be any good at naming things like these, but what's with the name Mapusaurus? That's what they named it. Seriously! What? It makes me wonder if the dinosaur had some navigation system where they could develop some extremely detailed mental map in its head. That simply is not the case. It stands for earth lizard. I'm sorry, but when I think of "earth lizard" I think of cute little lizards that run around the desert or inside aquariums. This thing is much more massive than any earth lizard, not to mention what's thought to be its blood thirsty nature. Tyrannosaurus stands for tyrant lizard and Rex stands for king. Now that's an appropriate name. T-Rex = Tyrant lizard king. Sure! I can buy that. Even the Giganotosaurus. That name is self-explanatory. It was huge. Fine. Those names I can deal with, but Mapusaurus? This dino is bigger than the T-rex and probably even bigger than Giganotosaurus, but yet it gets a name that stands for earth lizard. What gives?