What is Big Al famous for?

Many injuries and infections on its skeleton

How may Allosaurus have used its head when attacking?

Like a hatchet, slashing with its upper jaw

Allosaurus Challenge – A 10-Question Trivia Quiz

Allosaurus ruled the Jurassic about 75 million years before Tyrannosaurus rex appeared, and the allosaurus challenge explores this formidable hunter. Meet Big Al, a skeleton with many injuries, visit Utah's Cleveland-Lloyd quarry with thousands of Allosaurus bones and learn how it fought Stegosaurus.

Start Allosaurus Challenge

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Name
What does Allosaurus mean?
Period
When did Allosaurus live?
Quarry
Which Utah site holds thousands of Allosaurus bones?
Big Al
What is Big Al famous for?
Prey
Which plated dinosaur did Allosaurus fight?
Size
About how long was Allosaurus?
Hatchet
How may Allosaurus have used its head when attacking?
Arms
How many fingers did Allosaurus have?
State
Which US state has Allosaurus as its state fossil?
Crests
What small features sat above its eyes?

Explanations: answer key for all 10 questions

Q1: What does Allosaurus mean?
Answer: Different lizard
Its vertebrae differed from others known.
Q2: When did Allosaurus live?
Answer: Late Jurassic
About 155 to 145 million years ago.
Q3: Which Utah site holds thousands of Allosaurus bones?
Answer: Cleveland-Lloyd Dinosaur Quarry
Why so many died there is debated.
Q4: What is Big Al famous for?
Answer: Many injuries and infections on its skeleton
It was found in Wyoming in 1991.
Q5: Which plated dinosaur did Allosaurus fight?
Answer: Stegosaurus
A spike wound proves it.
Q6: About how long was Allosaurus?
Answer: About 8 to 9 meters
It was smaller than T. rex.
Q7: How may Allosaurus have used its head when attacking?
Answer: Like a hatchet, slashing with its upper jaw
Its bite was weaker than T. rex's.
Q8: How many fingers did Allosaurus have?
Answer: Three
It had large curved claws.
Q9: Which US state has Allosaurus as its state fossil?
Answer: Utah
It was adopted in 1988.
Q10: What small features sat above its eyes?
Answer: Horn-like crests
They may have been for display.

Allosaurus Challenge – Jurassic Top Predator

Allosaurus was the most common large predator in the Late Jurassic of North America, living about 155 to 145 million years ago. It grew to about 8 to 9 meters long and had a large skull, sharp serrated teeth and powerful three-fingered arms.

Thousands of Allosaurus bones have been found at the Cleveland-Lloyd Dinosaur Quarry in Utah, and a skeleton called Big Al shows broken bones and infections from a tough life. Allosaurus is Utah's state fossil.

Allosaurus hunted plant-eaters such as Stegosaurus and young sauropods, perhaps slashing with its upper jaw like a hatchet. A Stegosaurus spike wound in an Allosaurus bone proves the two fought. It lived long before Tyrannosaurus rex.

What This Quiz Teaches

Dinosaur fans and students will enjoy these questions.

What its name means
When it lived
Where many fossils are
What Big Al shows
Which dinosaurs it hunted

Did You Know?

Allosaurus had about 70 teeth.
Saurophaganax may be a large Allosaurus.
Fossils are also found in Portugal.
Its skull had light openings.
Young Allosaurus grew quickly.