Pachycephalosaurus
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Aggression Index

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Park Attraction

Pachy Arena
Pachycephalosaurus
  • Name Meaning: “Thick-Headed Lizard”
  • Habitat: North America
  • Length: 16 ftLength: 5m
  • Weight: 1000 pounds450 kg
  • Stance: Biped
  • Diet: Herbivore
  • Age: Cretaceous

Talk about hard-headed! The Pachycephalosaurus is instantly recognizable for its incredibly thick skull, which can be up to 10 inches25 cm thick. And though its snout and skull are covered by small knobs, don’t worry: Pachycephalosaurus only eats fruit and seeds.

Fossil imagery courtesy of Natural History Museum of Los Angeles County.

Pachycephalosaurus
Pachycephalosaurus Attraction

Did you know?

The Pachycephalosaurus are herd animals, much akin to African Buffalo.

Size Chart

Tyrannosaurus rex 40′ long × 16′ tall12m long × 5m tall Apatosaurus 75′ long × 15′ tall23m long × 5m tall Suchomimus 35′ long × 14′ tall11m long × 4m tall Triceratops 30′ long × 10′ tall9m long × 3m tall Edmontosaurus 35′ long × 10′ tall11m long × 3m tall Gallimimus 26′ long × 9′ tall8m long × 3m tall Stegosaurus 30′ long × 9′ tall9m long × 3m tall Parasaurolophus 40′ long × 9′ tall12m long × 3m tall Baryonyx 30′ long × 8′ tall9m long × 3m tall Metriacanthosaurus 26′ long × 6′ tall8m long × 2m tall Ankylosaurus 30′ long × 6′ tall10m long × 2m tall Velociraptor 15′ long × 6′ tall5m long × 2m tall Pachycephalosaurus 16′ long × 6′ tall5m long × 2m tall Microceratus 2.5′ long × 1′ tall1m long × 0.3m tall Mosasaurus 60′ long 18m long Pteranodon 18′ long6m long Dimorphodon 8′ long3m long Tyrannosaurus rex 40′ long × 16′ tall12m long × 5m tall Apatosaurus 75′ long × 15′ tall23m long × 5m tall Suchomimus 35′ long × 14′ tall11m long × 4m tall Triceratops 30′ long × 10′ tall9m long × 3m tall Edmontosaurus 35′ long × 10′ tall11m long × 3m tall Gallimimus 26′ long × 9′ tall8m long × 3m tall Stegosaurus 30′ long × 9′ tall9m long × 3m tall Parasaurolophus 40′ long × 9′ tall12m long × 3m tall Baryonyx 30′ long × 8′ tall9m long × 3m tall Metriacanthosaurus 26′ long × 6′ tall8m long × 2m tall Ankylosaurus 30′ long × 6′ tall10m long × 2m tall Velociraptor 15′ long × 6′ tall5m long × 2m tall Pachycephalosaurus 16′ long × 6′ tall5m long × 2m tall Microceratus 2.5′ long × 1′ tall1m long × 0.3m tall Mosasaurus 60′ long 18m long Pteranodon 18′ long6m long Dimorphodon 8′ long3m long
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