From sauropods to pachycephalosaurs · nine group champions
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From sauropods to pachycephalosaurs · nine group champions
The Largest Dinosaur of Each Major Group · TOP 9
One champion from each major dinosaur group, lined up at fossil-derived real-world size. Estimates shift as new research appears.
- METHOD
- Ranked by average adult mass
- Estimated time
- 5 MIN
- MODELS
- 9
Pachycephalosaurus wyomingensis
Pachycephalosaurus
Easily identified by the solid, 25 cm thick bony dome atop its skull. This built-in helmet was likely used for head-butting or flank-butting during territorial battles and establishing dominance within the herd.
- Average mass
- 410 kg
- Size
- 4.5 m
Stegosaurus ungulatus
Stegosaurus
Famous for the double row of large, kite-shaped plates along its back, likely used for display or thermoregulation, and a highly dangerous tail armed with four long spikes to fend off predators.
- Average mass
- 3,800 kg
- Size
- 7 m
Therizinosaurus cheloniformis
Therizinosaurus
A bizarre, large-bellied herbivore covered in feathers, easily recognized by its long neck and gargantuan, scythe-like hand claws measuring up to a meter long, used for pulling down branches and defense.
- Average mass
- 5,000 kg
- Size
- 9.5 m
Deinocheirus mirificus
Deinocheirus
The most bizarre and massive of the ostrich dinosaurs, featuring a camel-like hump on its back, a broad duck-like bill, and massive arms tipped with scythe-like claws for foraging plants and small animals.
- Average mass
- 6,400 kg
- Size
- 11 m
Spinosaurus aegyptiacus
Spinosaurus
Distinctive for the giant sail on its back and a long, crocodile-like snout. It was a semi-aquatic predator that used its paddle-like tail and specialized feet to swim through rivers and hunt large fish.
- Average mass
- 7,400 kg
- Size
- 14 m
Triceratops horridus
Triceratops
Best known for the three prominent horns on its face and a massive bony frill protecting its neck. It used its parrot-like beak to slice tough vegetation and its horns to defend against predators.
- Average mass
- 8,000 kg
- Size
- 8.5 m
A tiny trace is hiding somewhere in this scene.
Tyrannosaurus rex
Tyrannosaurus
An apex predator armed with the most powerful bite force of any land animal ever. It is characterized by its massive skull, bone-crushing teeth, and surprisingly short but muscular two-fingered arms.
- Average mass
- 8,400 kg
- Size
- 12.5 m
Shantungosaurus giganteus
Shantungosaurus
The largest of the duck-billed dinosaurs, it could walk on all fours or run on two powerful hind legs. It likely lived in herds and relied on its sheer size and heavy tail to deter predators.
- Average mass
- 13,000 kg
- Size
- 15 m
Argentinosaurus huinculensis
Argentinosaurus
As one of the most massive land animals in Earth's history, it used its incredibly long neck to browse on high vegetation, supported by four pillar-like legs designed to bear its immense weight.
- Average mass
- 75,000 kg
- Size
- 35 m
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FIELD NOTES COMPLETE
Scale is no longer just a number.
You’ve explored all 9 subjects in this exhibit. Continue to the next gallery and discover another world of scale.
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