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Polacanthus with a Low Back

A smiling Polacanthus is depicted from the side, showing its low armored back and broad hip shield.

A side view of a Polacanthus with a low back, large hip shield, and spikes along its sides.
Polacanthus with a Low Back
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A4 format (landscape), black outlines on a white background · for home and classroom use

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Polacanthus with Scaled Armor

This side-view depiction presents the dinosaur with a cheerful expression and a heavily armored torso. Its back features a combination of protective scales, a solid pelvic shield covering the hips, and sharp lateral spikes running along its flanks.

Unique Features of Polacanthus

Fossils of Polacanthus discovered in Early Cretaceous deposits show that its hips were covered by a continuous sheet of fused bone called a pelvic shield. This solid plate provided exceptional protection against top-down attacks by early predatory dinosaurs.

Natural Colors of Polacanthus

  • Scaled back skin: dark olive green
  • Pelvic hip shield: dull reddish brown
  • Side spikes: off-white or yellowish gray
  • Abdomen skin: soft pale gray
Questions and answers

Questions and Answers

Where were the first fossils of Polacanthus discovered?
The first Polacanthus remains were found on the Isle of Wight in England during the nineteenth century.
Did Polacanthus have armor all over its body?
Its upper back and hips were heavily armored with bony plates and spikes, while its belly remained softer underneath.
How fast could Polacanthus move?
Due to its heavy body armor and short legs, Polacanthus moved slowly across floodplain landscapes.
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