WHO WILL WIN?
Spinosaurus
CROCO-RAAWR
T. rex
RAAWR
THE SETUP

Spinosaurus vs T. rex

Spinosaurus
Spinosaurus
T. rex
T. rex

Pretend they meet in forest. Dinosaurs lived long ago. Look at the facts. Then you pick.

Would they meet?

No. Spinosaurus lived in long ago. T. rex lived in long ago. Pretend meeting.

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

Spinosaurus

Spinosaurus aegyptiacus · A sail-backed river hunter longer than a bus.

Spinosaurus
Home
Mid-Cretaceous rivers of North Africa · Lived in Africa long ago
Food
Meat
Group
Lives alone
Size
Spinosaurus is giant.

River specialist.

A snout that may have sensed pressure in water, like a crocodile's face.

Boss of a Cretaceous river.

  • Spinosaurus is giant and not very fast.
  • Giant fish, and probably other animals that came to drink.
  • Cretaceous North Africa, about 95 million years ago — rivers and mangrove-ish coasts, not the Serengeti.

Family: Other spinosaurids like Baryonyx and Suchomimus.

Corner B

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!

TO SCALE!

SIZE & WEIGHT

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

1.70 m

Grown-up

2.8 m

Spinosaurus to scale

Spinosaurus

3.7 m

T. rex to scale

T. rex

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

Spinosaurus7,000 kg

Longer than T. rex, maybe as long as a city bus, with a sail that could top a doorway.

T. rex8,200 kg

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

Spinosaurus

2.8 m · 7,000 kg

Spinosaurus is giant. 7,000 kg.

T. rex

3.7 m · 8,200 kg

T. rex is giant. 8,200 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: Croc-snout plus canoe claws
  • Armor: Sail and dense bones
  • Senses: A snout that may have sensed pressure in water, like a crocodile's face.

Spinosaurus · labeled field diagram

  • 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

Spinosaurus2000 psi bite
T. rex8000 psi bite

Spinosaurus

Croc-snout plus canoe claws

Tool: croc-snout plus canoe claws. Bite: 2,000 psi.

T. rex

Banana-sized bone shears

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

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

Whose tools would you trust?

ZOOM!

SPEED

Who gets there first?

Spinosaurus
18 km/h
T. rex
20 km/h
Spinosaurus18 km/h
T. rex20 km/h

Spinosaurus

18 km/h

Spinosaurus can go 18 km/h. That is not very fast.

T. rex

20 km/h

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

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

Spinosaurus

Not their home · Lived in Africa long ago

Spinosaurus's home is the mid-cretaceous rivers of north africa, not forest.

T. rex

This is home · Lived in North America long ago

T. rex lives in places like forest.

No. Spinosaurus lived in long ago. T. rex lived in long ago. Pretend meeting.

Who gets the home point?

MENU!

FOOD

How do they get lunch?

Spinosaurus
Meat · River specialist.
T. rex
Meat · Giant bite-and-pull hunter.

Spinosaurus

Meat · River specialist.

Giant fish, and probably other animals that came to drink.

T. rex

Meat · Giant bite-and-pull hunter.

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

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.

Spinosaurus
Lives alone
T. rex
Lives alone
Spinosaurus7 grit /10
T. rex9 grit /10

Spinosaurus

Lives alone

Boss of a Cretaceous river. Grit: 7/10.

T. rex

Lives alone

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

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?

Spinosaurus
4/10
T. rex
5/10
Spinosaurus4 brains /10
T. rex5 brains /10

Spinosaurus

4/10

A snout that may have sensed pressure in water, like a crocodile's face.

T. rex

5/10

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

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

Who would you score for noticing?

COUSINS!

FAMILY

Who are they related to?

Spinosaurus
Spinosaurus aegyptiacus
T. rex
Tyrannosaurus rex

Spinosaurus

Spinosaurus aegyptiacus

Other spinosaurids like Baryonyx and Suchomimus.

T. rex

Tyrannosaurus rex

Birds!

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?

Spinosaurus
River-Ambush Paddle
T. rex
Bone-Crunch Clamp

Spinosaurus

River-Ambush Paddle

Spinosaurus was built to hunt in rivers.

T. rex

Bone-Crunch Clamp

T.

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: Spinosaurus 0 · T. rex 0 · still open 8

Who wins the meeting?

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

THWACK!

THEY MEET

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

Pretend · fact-based · not a gore-fest

SLAM!

THE TOOLS SHOW UP

T. rex is heavier. Spinosaurus uses croc-snout plus canoe claws. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

POW!

SPECIAL MOVES

Spinosaurus tries the River-Ambush Paddle. T. rex tries the Bone-Crunch Clamp. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

T. rex!

A CLEAR PICK

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

On forest, T. rex wins. T. rex likes forest more. Spinosaurus 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: Spinosaurus 0 · T. rex 7 · ties 1.

Your card: Spinosaurus 0 · T. rex 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.

1/17 · scroll