WHO WILL WIN?
Spinosaurus
CROCO-RAAWR
Stegosaurus
WHAP-SPIKE
THE SETUP

Spinosaurus vs Stegosaurus

Spinosaurus
Spinosaurus
Stegosaurus
Stegosaurus

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

Would they meet?

No. Spinosaurus lived in long ago. Stegosaurus 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

Stegosaurus

Stegosaurus stenops · Roof-plates up top, a tagged tail in back.

Stegosaurus
Home
Late Jurassic fern prairies of western North America · Lived in North America long ago
Food
Plants
Group
Lives in a herd
Size
Stegosaurus is huge.

Browser.

A tiny brain, a low head, and a tail that did not wait for a committee.

Slow salad tank.

  • Stegosaurus is huge and slow.
  • Low plants.
  • Morrison Formation country — Late Jurassic, about 150 million years ago.

Family: Other plated dinosaurs like Kentrosaurus.

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

2.8 m

Stegosaurus to scale

Stegosaurus

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.

Stegosaurus3,500 kg

About the weight of a pickup truck, with plates that could top a grown-up's head.

Spinosaurus

2.8 m · 7,000 kg

Spinosaurus is giant. 7,000 kg.

Stegosaurus

2.8 m · 3,500 kg

Stegosaurus is huge. 3,500 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: 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: Thagomizer tail spikes
  • Armor: Kite-plate rooftop
  • Senses: A tiny brain, a low head, and a tail that did not wait for a committee.

Stegosaurus · labeled field diagram

Spinosaurus2000 psi bite
Stegosaurus200 psi bite

Spinosaurus

Croc-snout plus canoe claws

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

Stegosaurus

Thagomizer tail spikes

Tool: thagomizer tail spikes. 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?

Spinosaurus
18 km/h
Stegosaurus
12 km/h
Spinosaurus18 km/h
Stegosaurus12 km/h

Spinosaurus

18 km/h

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

Stegosaurus

12 km/h

Stegosaurus can go 12 km/h. That is slow.

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
SpinosaurusStegosaurusBoth

Meeting biome: grassland. 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 grassland.

Stegosaurus

This is home · Lived in North America long ago

Stegosaurus lives in places like grassland.

No. Spinosaurus lived in long ago. Stegosaurus lived in long ago. Pretend meeting.

Who gets the home point?

MENU!

FOOD

How do they get lunch?

Spinosaurus
Meat · River specialist.
Stegosaurus
Plants · Browser.

Spinosaurus

Meat · River specialist.

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

Stegosaurus

Plants · Browser.

Low plants.

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
Stegosaurus
Lives in a herd
Spinosaurus7 grit /10
Stegosaurus7 grit /10

Spinosaurus

Lives alone

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

Stegosaurus

Lives in a herd

Slow salad tank. 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?

Spinosaurus
4/10
Stegosaurus
2/10
Spinosaurus4 brains /10
Stegosaurus2 brains /10

Spinosaurus

4/10

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

Stegosaurus

2/10

A tiny brain, a low head, and a tail that did not wait for a committee.

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
Stegosaurus
Stegosaurus stenops

Spinosaurus

Spinosaurus aegyptiacus

Other spinosaurids like Baryonyx and Suchomimus.

Stegosaurus

Stegosaurus stenops

Other plated dinosaurs like Kentrosaurus.

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
Stegosaurus
Plate Parade Whip

Spinosaurus

River-Ambush Paddle

Spinosaurus was built to hunt in rivers.

Stegosaurus

Plate Parade Whip

The brain was famously small.

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 · Stegosaurus 0 · still open 8

Who wins the meeting?

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

FWOOSH!

THEY MEET

Spinosaurus runs first. Stegosaurus does not race. They wait in grassland.

Pretend · fact-based · not a gore-fest

KICK!

THE TOOLS SHOW UP

Spinosaurus is heavier. Stegosaurus uses thagomizer tail spikes. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

STOOMP!

SPECIAL MOVES

Spinosaurus tries the River-Ambush Paddle. Stegosaurus tries the Plate Parade Whip. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

Spinosaurus!

A SQUEAKER

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

On grassland, Spinosaurus wins. Spinosaurus is a lot heavier. Stegosaurus 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 6 · Stegosaurus 2.

Your card: Spinosaurus 0 · Stegosaurus 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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