WHO WILL WIN?
T. rex
RAAWR
Carnotaurus
SNARL-HORN
THE SETUP

T. rex vs Carnotaurus

T. rex
T. rex
Carnotaurus
Carnotaurus

Pretend a t. rex and a carnotaurus meet in grassland. Look at the facts. Then you pick.

Would they meet?

No. Wild t. rexs and carnotauruss would not meet. We still look at the facts.

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

Carnotaurus

Carnotaurus sastrei · Bull horns, tiny arms, and a sprinter's tail.

Carnotaurus
Home
Late Cretaceous plains of Patagonia · Lived in South America long ago
Food
Meat
Group
Lives alone
Size
Carnotaurus is huge.

Sprint hunter of Patagonia.

A runner's kit: look, chase, bite.

A bull-headed sprinter.

  • Carnotaurus is huge and fast.
  • Medium plant-eaters on South American plains.
  • Late Cretaceous Argentina.

Family: Abelisaurids like Abelisaurus and Majungasaurus.

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

2.5 m

Carnotaurus to scale

Carnotaurus

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.

Carnotaurus1,400 kg

About as heavy as a small car, hip-tall as a doorway, with horns a bull would respect.

T. rex

3.7 m · 8,200 kg

T. rex is giant. 8,200 kg.

Carnotaurus

2.5 m · 1,400 kg

Carnotaurus is huge. 1,400 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: Horned skull plus a meat-slicer jaw
  • Armor: Bumpy hide
  • Senses: A runner's kit: look, chase, bite.

Carnotaurus · labeled field diagram

T. rex8000 psi bite
Carnotaurus1500 psi bite

T. rex

Banana-sized bone shears

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

Carnotaurus

Horned skull plus a meat-slicer jaw

Tool: horned skull plus a meat-slicer jaw. Bite: 1,500 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
Carnotaurus
48 km/h
T. rex20 km/h
Carnotaurus48 km/h

T. rex

20 km/h

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

Carnotaurus

48 km/h

Carnotaurus can go 48 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 grassland. Who is built for this place?

N. AmericaS. AmericaEuropeAfricaAsiaAustraliaAntarctica
T. rexCarnotaurusBoth

Meeting biome: grassland. 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 grassland.

Carnotaurus

This is home · Lived in South America long ago

Carnotaurus lives in places like grassland.

No. Wild t. rexs and carnotauruss would not meet. We still look at the facts.

Who gets the home point?

MENU!

FOOD

How do they get lunch?

T. rex
Meat · Giant bite-and-pull hunter.
Carnotaurus
Meat · Sprint hunter of Patagonia.

T. rex

Meat · Giant bite-and-pull hunter.

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

Carnotaurus

Meat · Sprint hunter of Patagonia.

Medium plant-eaters on South American plains.

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
Carnotaurus
Lives alone
T. rex9 grit /10
Carnotaurus7 grit /10

T. rex

Lives alone

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

Carnotaurus

Lives alone

A bull-headed sprinter. Grit: 7/10.

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
Carnotaurus
4/10
T. rex5 brains /10
Carnotaurus4 brains /10

T. rex

5/10

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

Carnotaurus

4/10

A runner's kit: look, chase, bite.

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
Carnotaurus
Carnotaurus sastrei

T. rex

Tyrannosaurus rex

Birds!

Carnotaurus

Carnotaurus sastrei

Abelisaurids like Abelisaurus and Majungasaurus.

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
Carnotaurus
Patagonia Sprint Horns

T. rex

Bone-Crunch Clamp

T.

Carnotaurus

Patagonia Sprint Horns

The tail and legs look built for speed.

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 · Carnotaurus 0 · still open 8

Who wins the meeting?

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

WHAM!

THEY MEET

Carnotaurus runs first. T. rex does not race. They wait in grassland.

Pretend · fact-based · not a gore-fest

WHOOSH!

THE TOOLS SHOW UP

T. rex is heavier. Carnotaurus uses horned skull plus a meat-slicer jaw. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

ZING!

SPECIAL MOVES

T. rex tries the Bone-Crunch Clamp. Carnotaurus tries the Patagonia Sprint Horns. 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 grassland, T. rex wins. T. rex is a lot heavier. Carnotaurus 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 · Carnotaurus 1 · ties 1.

Your card: T. rex 0 · Carnotaurus 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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