WHO WILL WIN?
Stegosaurus
WHAP-SPIKE
Brachiosaurus
HOOOOONK
THE SETUP

Stegosaurus vs Brachiosaurus

Stegosaurus
Stegosaurus
Brachiosaurus
Brachiosaurus

Pretend a stegosaurus and a brachiosaurus 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

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.

Corner B

Brachiosaurus

Brachiosaurus altithorax · A living watchtower that ate the upstairs leaves.

Brachiosaurus
Home
Late Jurassic woodlands of western North America · Lived in North America long ago
Food
Plants
Group
Lives in a herd
Size
Brachiosaurus is giant.

Does not hunt.

A watchtower head.

Calm until it steps.

  • Brachiosaurus is giant and slow.
  • High browse: conifers and other tall plants.
  • Late Jurassic North America, sharing the Morrison world with Allosaurus and Stegosaurus.

Family: Other sauropods: Giraffatitan (the African look-alike), Camarasaurus, and the whole long-neck family.

TO SCALE!

SIZE & WEIGHT

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

1.70 m

Grown-up

2.8 m

Stegosaurus to scale

Stegosaurus

12.0 m

Brachiosaurus to scale

Brachiosaurus

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

Stegosaurus3,500 kg

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

Brachiosaurus35,000 kg

Head as high as a four-story building. Heavier than four African elephants stacked in a science dream.

Stegosaurus

2.8 m · 3,500 kg

Stegosaurus is huge. 3,500 kg.

Brachiosaurus

12.0 m · 35,000 kg

Brachiosaurus is giant. 35,000 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: 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

  • Weapon: Column legs plus a neck crane
  • Armor: A body the size of a house
  • Senses: A watchtower head.

Brachiosaurus · labeled field diagram

Stegosaurus200 psi bite
Brachiosaurus80 psi bite

Stegosaurus

Thagomizer tail spikes

Tool: thagomizer tail spikes. Bite: 200 psi.

Brachiosaurus

Column legs plus a neck crane

Tool: column legs plus a neck crane. Bite: 80 psi.

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

Whose tools would you trust?

ZOOM!

SPEED

Who gets there first?

Stegosaurus
12 km/h
Brachiosaurus
10 km/h
Stegosaurus12 km/h
Brachiosaurus10 km/h

Stegosaurus

12 km/h

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

Brachiosaurus

10 km/h

Brachiosaurus can go 10 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 forest. Who is built for this place?

N. AmericaS. AmericaEuropeAfricaAsiaAustraliaAntarctica
StegosaurusBrachiosaurusBoth

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

Stegosaurus

This is home · Lived in North America long ago

Stegosaurus lives in places like forest.

Brachiosaurus

This is home · Lived in North America long ago

Brachiosaurus 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?

Stegosaurus
Plants · Browser.
Brachiosaurus
Plants · Does not hunt.

Stegosaurus

Plants · Browser.

Low plants.

Brachiosaurus

Plants · Does not hunt.

High browse: conifers and other tall 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.

Stegosaurus
Lives in a herd
Brachiosaurus
Lives in a herd
Stegosaurus7 grit /10
Brachiosaurus6 grit /10

Stegosaurus

Lives in a herd

Slow salad tank. Grit: 7/10.

Brachiosaurus

Lives in a herd

Calm until it steps. Grit: 6/10.

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?

Stegosaurus
2/10
Brachiosaurus
2/10
Stegosaurus2 brains /10
Brachiosaurus2 brains /10

Stegosaurus

2/10

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

Brachiosaurus

2/10

A watchtower head.

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

Who would you score for noticing?

COUSINS!

FAMILY

Who are they related to?

Stegosaurus
Stegosaurus stenops
Brachiosaurus
Brachiosaurus altithorax

Stegosaurus

Stegosaurus stenops

Other plated dinosaurs like Kentrosaurus.

Brachiosaurus

Brachiosaurus altithorax

Other sauropods: Giraffatitan (the African look-alike), Camarasaurus, and the whole long-neck family.

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?

Stegosaurus
Plate Parade Whip
Brachiosaurus
Sky-Salad Stomp

Stegosaurus

Plate Parade Whip

The brain was famously small.

Brachiosaurus

Sky-Salad Stomp

It did not need fangs.

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: Stegosaurus 0 · Brachiosaurus 0 · still open 8

Who wins the meeting?

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

THWACK!

THEY MEET

Stegosaurus runs first. Brachiosaurus does not race. They wait in forest.

Pretend · fact-based · not a gore-fest

SLAM!

THE TOOLS SHOW UP

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

Pretend · fact-based · not a gore-fest

POW!

SPECIAL MOVES

Stegosaurus tries the Plate Parade Whip. Brachiosaurus tries the Sky-Salad Stomp. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

Brachiosaurus!

A STOMP · UNDERDOG

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

On forest, Brachiosaurus wins. Brachiosaurus 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: Stegosaurus 4 · Brachiosaurus 2 · ties 2.

Your card: Stegosaurus 0 · Brachiosaurus 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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