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Wild Roar Figure Guide
Hesperosaurus Wild Roar
Hesperosaurus is a plated dinosaur from Wyoming, a close cousin of Stegosaurus with longer, lower back plates. Mattel added it to the first Wild Roar wave of Jurassic World Epic Evolution as an olive-green figure with tan plates, a roar sound and a tail-swing attack. Here is what the figure looks like, how to tell it apart from Stegosaurus, and how to unlock it in the Jurassic World Play App.
Plated dinosaurRoar soundTail swing🧬 DNA scan code
Spot the Difference: Hesperosaurus or Stegosaurus?
They lived in the same part of North America, but you can tell them apart.
Some scientists have suggested it might belong in a group with Dacentrurus, but most still treat it as its own genus.
What Is Wild Roar?
Wild Roar is the mid-sized assortment of Mattel’s Epic Evolution line. Each figure has a roaring sound, an attack motion and movable joints, and runs on small button cell batteries. Like every Epic Evolution figure, it comes with a DNA code that unlocks the animal in the Jurassic World Play App.
Hesperosaurus came in the first Wild Roar wave of Epic Evolution, alongside Ekrixinatosaurus, Gryposuchus and Megalosaurus.
Paint and Colours
A calm, natural scheme. The body is olive green with lighter patches, the back plates are a sandy tan with darker edges, and the tail spikes are cream.
Sculpt and Detail
Plates and spikes
Two rows of plates run along the back, rounded and wide rather than tall and pointed. Four spikes sit at the end of the tail.
Head and legs
The head is small and low with a beak. The back legs are longer than the front legs, arching the back.
Figure vs fossil
Action Features and Articulation
✓ Roar sound✓ Attack motion✓ Movable joints✗ Sound needs batteries
Like every Wild Roar figure, Hesperosaurus roars when you trigger it and swings its spiked tail. It has posable legs and runs on small button cell batteries.
Size and Specs
Mid-sized figure for ages 4 and up. Look for the Epic Evolution logo and the green body with tan plates.
Is It Worth Buying?
Hesperosaurus is a nice alternative to the many Stegosaurus toys, with accurate rounded plates and a roar. The colours are gentle rather than flashy.
It came out in the first Epic Evolution Wild Roar wave.
What we like
- Accurate rounded plates
- Tail-swing attack
- Roar sound
- Rare stegosaur
Good to know
- Muted colours
- Needs batteries for sound
- Easy to mistake for Stegosaurus
About Hesperosaurus
Hesperosaurus was named in 2001 by Kenneth Carpenter and colleagues from a nearly complete skeleton found in the Morrison Formation of Wyoming, USA. The name means western lizard.
It lived in the Late Jurassic, about 156 million years ago. It was about 6.5 m long and weighed around 3.5 tonnes.
Hesperosaurus was a stegosaur, a plant eater with plates and a spiked tail. One fossil preserved the horny sheath of a plate, showing that the plates were covered in keratin.
How to Unlock Hesperosaurus in the Jurassic World Play App
Open the Jurassic World Play App (it used to be called the Jurassic World Facts App), tap Scan and point your camera at the DNA code below.
Frequently Asked Questions
Its plates were longer and lower, and its skull was shorter and wider.
It roars and swings its spiked tail.
Yes, small button cell batteries power the roar.
About 6.5 m long and around 3.5 tonnes.
Western lizard.
Open the Jurassic World Play App, tap Scan and point your camera at the copy of the code on this page.