The Tyrannosaurus rex has a nasty reputation as an evil man-eater. But was that really the case? Was the Tyrannosaurus rex a predator or really a scavenger? Take our quiz to learn about the cases for and against.
What kind of gait did the Tyrannosaurus rex (T. rex) have?
Where did the T. rex rank in its ecosystem?
as the largest carnivore
as the second largest carnivore
as one of the smaller carnivores
What kind of teeth did the T. rex have?
What do scientists estimate was the biting power of a T. rex's jaws?
2,364 pounds to 3,112 pounds (113,200 newtons to 149,000 newtons)
3,822 pounds to 6,788 pounds (183,000 newtons to 325,000 newtons)
8,765 pounds to 9,863 pounds (419,670 newtons to 472,200 newtons)
What do long thigh bones in an animal indicate?
that the animal was agile
that the animal was tall
good running endurance
What was the purpose of the triceratops's bony frilled neck?
It was a defense mechanism.
It was a beauty feature.
It helped protect them against inclement weather.
Where did the triceratops get its name from?
The pleats on its neck frill.
It's three toed feet.
The three horns on its head.
When did the idea that the T. rex may have been a scavenger originate?
in the 1600s
in the 1900s
in the 1990s
Which theory is the basis for the theory that T. rex may have been a scavenger?
The theory that birds originated from dinosaurs.
The theory that dinosaurs were gentle animals.
The Alvarez theory.
What was the tooth structure of a T. rex's bite?
The upper teeth met the inside of the lower teeth.
The tops of the lower teeth met the tops of the upper teeth.
The lower teeth met the inside of the upper teeth.
What would a T. rex's large nasal passages have served for according to the scavenger theory?
They would be able to use their jaws for attacking, while still getting in enough air through their nose.
It would have enabled them to smell carrion from afar.
It would enable them to sense danger using more than just their sense of vision.
What is coprolite?
dinosaur protein strands
dinosaur bone marrow
fossilized dinosaur dung
What aspects of the T. rex's physical structure would have made running a challenge?
its small feet
its short forelimbs
its heavy torso
What do studies suggest was the T. rex's speed while running?
22 mph (10 meters per second)
44 mph (20 meters per second)
66 mph (30 meters per second)
How much carrion would have been needed for a dinosaur to live on?
one carcass a day
the amount of carrion found in the Serengeti today
500 kilograms (1,100 pounds) per week
What is further evidence that the T. rex may have been a predator?
weak digestive systems that would not have been able to tolerate decaying meat
lack of other dinosaur fossils in the vicinity of a T. rex fossil, indicating that other dinosaurs avoided them
evidence of bite marks on other dinosaurs
What does Kenneth Carpenter, of the Denver Museum of Natural History, say about the T. rex's arms?
They were strong.
They were puny.
They were a hindrance.
Which animals preys on other animals despite not having arms?
What else would a T. rex have bitten?
What do many scientists conclude about the T. rex?