Iguanodon Raising Its Paw
An Iguanodon stands at an angle with its front limb slightly lifted, exposing a narrow beak and a sharp thumb spike.
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Iguanodon Displaying Its Thumb Spike
Positioned at an angle, the Iguanodon features a distinctive beak and an elevated front claw. Its specialized thumb spike stands out clearly on its front limb, illustrating the unique anatomical structure of this early plant-eating herbivore.
Fascinating Facts About Iguanodon
When Iguanodon was first discovered in the nineteenth century, paleontologists mistakenly placed its thumb spike on top of its nose like a rhinoceros horn. Later full skeletal discoveries revealed that the spike was actually attached to the wrist as a specialized thumb.
Real-World Colors of Iguanodon
- Back and upper torso: brownish green, gray-green, or russet brown
- Stomach area: light sand, pale cream, or soft gray
- Beak and claws: dark gray or black
- Thumb spike: off-white, yellowish bone color, or gray