WHO WILL WIN?
T. rex
RAAWR
Parasaurolophus
TROOOOT
THE SETUP

T. rex vs Parasaurolophus

T. rex
T. rex
Parasaurolophus
Parasaurolophus

Pretend a t. rex and a parasaurolophus meet in forest. Look at the facts. Then you pick.

Would they meet?

Yes. They could meet in the real wild. This page is still a what-if.

This is pretend and based on facts. Real animals usually hide or leave.

Read the facts. Make your card. The page waits to pick.

Corner A

T. rex

Tyrannosaurus rex · The banana-toothed bone cruiser.

T. rex
Home
Late Cretaceous floodplains of western North America · Lived in North America long ago
Food
Meat
Group
Lives alone
Size
T. rex is giant.

Giant bite-and-pull hunter.

A huge smelling system and eyes that faced more forward than most dinosaurs.

Top of a vanished food web.

  • T. rex is giant and not very fast.
  • Horned dinosaurs, duckbills, leftover carcasses — a giant meat-eater that did not skip free calories.
  • Fossils come from places like Hell Creek: forests, rivers, and floodplains about 66 million years ago.

Family: Birds!

Corner B

Parasaurolophus

Parasaurolophus walkeri · A duckbill with a trombone on its head.

Parasaurolophus
Home
Late Cretaceous forests of western North America · Lived in North America long ago
Food
Plants
Group
Lives in a herd
Size
Parasaurolophus is huge.

Does not hunt.

The crest was a horn.

Nervy salad.

  • Parasaurolophus is huge and fast.
  • Plants ground by a dental battery — a whole chalkboard of replacement teeth.
  • Late Cretaceous North America.

Family: Other hadrosaurs: Edmontosaurus, Corythosaurus, and the duckbill crowd.

TO SCALE!

SIZE & WEIGHT

Stand them next to a grown-up. Who is bigger and heavier?

1.70 m

Grown-up

3.7 m

T. rex to scale

T. rex

3.2 m

Parasaurolophus to scale

Parasaurolophus

Height to scale. A grown-up is 1.7 m.

T. rex8,200 kg

Hip-tall as a basketball hoop, heavier than an African elephant, longer than a school bus.

Parasaurolophus2,500 kg

About as heavy as a rhinoceros, with a head-crest as long as a baseball bat.

T. rex

3.7 m · 8,200 kg

T. rex is giant. 8,200 kg.

Parasaurolophus

3.2 m · 2,500 kg

Parasaurolophus is huge. 2,500 kg.

Kilograms are honest. A small animal can still have a strong tool.

Who would you pick for size?

TOOLKIT!

TOOLS

Teeth, claws, horns, venom, kick — what tools do they have?

  • Weapon: Banana-sized bone shears
  • Armor: Thick skull and a neck like a crane
  • Senses: A huge smelling system and eyes that faced more forward than most dinosaurs.

T. rex · labeled field diagram

  • Weapon: Herd, kick, and a honk
  • Armor: Duckbill battery
  • Senses: The crest was a horn.

Parasaurolophus · labeled field diagram

T. rex8000 psi bite
Parasaurolophus200 psi bite

T. rex

Banana-sized bone shears

Tool: banana-sized bone shears. Bite: 8,000 psi.

Parasaurolophus

Herd, kick, and a honk

Tool: herd, kick, and a honk. Bite: 200 psi.

A bite number is only one tool. Coils and kicks count too.

Whose tools would you trust?

ZOOM!

SPEED

Who gets there first?

T. rex
20 km/h
Parasaurolophus
40 km/h
T. rex20 km/h
Parasaurolophus40 km/h

T. rex

20 km/h

T. rex can go 20 km/h. That is not very fast.

Parasaurolophus

40 km/h

Parasaurolophus can go 40 km/h. That is fast.

A fast animal can miss. A slow one only has to connect.

Who takes the speed card?

HOME MAP!

HOME

They meet in forest. Who is built for this place?

N. AmericaS. AmericaEuropeAfricaAsiaAustraliaAntarctica
T. rexParasaurolophusBoth

Meeting biome: forest. Colored land is fossil range for dinosaurs and living range for zoo animals.

T. rex

This is home · Lived in North America long ago

T. rex lives in places like forest.

Parasaurolophus

This is home · Lived in North America long ago

Parasaurolophus lives in places like forest.

Yes. They could meet in the real wild. This page is still a what-if.

Who gets the home point?

MENU!

FOOD

How do they get lunch?

T. rex
Meat · Giant bite-and-pull hunter.
Parasaurolophus
Plants · Does not hunt.

T. rex

Meat · Giant bite-and-pull hunter.

Horned dinosaurs, duckbills, leftover carcasses — a giant meat-eater that did not skip free calories.

Parasaurolophus

Plants · Does not hunt.

Plants ground by a dental battery — a whole chalkboard of replacement teeth.

A plant eater is not 'safe.' Hippos and elephants still end arguments.

Whose hunting or defending helps more?

MOOD!

MOOD

Alone vs team. This rumble is one vs one.

T. rex
Lives alone
Parasaurolophus
Lives in a herd
T. rex9 grit /10
Parasaurolophus5 grit /10

T. rex

Lives alone

Top of a vanished food web. Grit: 9/10.

Parasaurolophus

Lives in a herd

Nervy salad. Grit: 5/10.

Pack and pride animals lose their backup in a 1-v-1.

Who is better for a solo meeting?

PING!

BRAINS

Who notices first and thinks next?

T. rex
5/10
Parasaurolophus
4/10
T. rex5 brains /10
Parasaurolophus4 brains /10

T. rex

5/10

A huge smelling system and eyes that faced more forward than most dinosaurs.

Parasaurolophus

4/10

The crest was a horn.

In the wild, brains often mean leave before it starts.

Who would you score for noticing?

COUSINS!

FAMILY

Who are they related to?

T. rex
Tyrannosaurus rex
Parasaurolophus
Parasaurolophus walkeri

T. rex

Tyrannosaurus rex

Birds!

Parasaurolophus

Parasaurolophus walkeri

Other hadrosaurs: Edmontosaurus, Corythosaurus, and the duckbill crowd.

Cousins are clues, not a score.

Not a fight point. Who has the wilder family story?

WILD CARD!

SPECIAL

What special move did they evolve?

T. rex
Bone-Crunch Clamp
Parasaurolophus
Crest Trombone Blast

T. rex

Bone-Crunch Clamp

T.

Parasaurolophus

Crest Trombone Blast

Air through the hollow crest probably made a low honk.

A secret move here is a real wild tool, not a video-game combo.

Whose special move would change the meeting?

YOUR SCORECARD

Your scorecard

Tap who has each fact. Then tap who you think wins.

  • SIZE & WEIGHT

  • TOOLS

  • SPEED

  • HOME

  • FOOD

  • MOOD

  • BRAINS

  • SPECIAL

Your card: T. rex 0 · Parasaurolophus 0 · still open 8

Who wins the meeting?

Keep going for the pretend meeting, then the science pick.

FWOOSH!

THEY MEET

Parasaurolophus runs first. T. rex does not race. They wait in forest.

Pretend · fact-based · not a gore-fest

KICK!

THE TOOLS SHOW UP

T. rex is heavier. Parasaurolophus uses herd, kick, and a honk. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

STOOMP!

SPECIAL MOVES

T. rex tries the Bone-Crunch Clamp. Parasaurolophus tries the Crest Trombone Blast. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

T. rex!

A STOMP

You skipped a final pick. The facts still stamp a champ.

On forest, T. rex wins. T. rex is a lot heavier. Parasaurolophus would still win some meetings at home.

In the wild, most animals skip a fight. We still judge who the bodies and the place would favor.

Science card: T. rex 6 · Parasaurolophus 1 · ties 1.

Your card: T. rex 0 · Parasaurolophus 0.

The last page follows the whole animal — body plus home — not one bar chart.

Send this fight

A friend can read the same facts.

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