Scelidosaurus Facts
Pronunciation: SKEL-id-oh-SORE-us
Name meaning: Limb Lizard
| Diet | Herbivore |
| Height | 1m |
| Length | 4m |
| Weight | 270 kg |
| Environment | Land |
| Era | Jurassic |
| Period | Early Jurassic |
| Type | Ankylosaur |
| Location | England |
Scelidosaurus was a small, heavily armoured ankylosaur that lived during the Early Jurassic period, around 200 million years ago. This primitive armoured dinosaur roamed the coastal plains of what is now southern England, making it one of the earliest and most complete ankylosaurs known to science.
Measuring about 4 metres in length and standing roughly 1 metre tall at the hip, Scelidosaurus was built like a living tank. Its body was covered in rows of bony plates called scutes, along with pointed spikes that projected from its back and sides. These defensive features protected it from the sharp-toothed theropod predators of its time. Unlike later ankylosaurs, Scelidosaurus lacked a heavy tail club, relying instead on its armour plating and spikes for protection.
As a herbivore, Scelidosaurus used its small, leaf-shaped teeth to crop and process plant material. Its low-slung body and four sturdy legs were perfectly adapted for browsing on ferns, cycads, and other low-growing vegetation that dominated Early Jurassic landscapes. The dinosaur's relatively long tail helped it maintain balance whilst feeding.
Scelidosaurus holds particular importance in palaeontology as one of the first armoured dinosaurs to be discovered and scientifically described, providing crucial insights into the early evolution of ankylosaur body plans and defensive adaptations.
What made Scelidosaurus distinctive?
Scelidosaurus was distinguished by its extensive body armour consisting of rows of bony scutes and protective spikes running along its back and sides. Unlike later ankylosaurs, it retained a relatively long tail without a club and had a more lightly built skull with small, leaf-shaped teeth.
Behaviour
Scelidosaurus likely lived in small groups, using its armoured plating and spikes as a primary defence when threatened by predators. When attacked, it probably crouched low to the ground to protect its vulnerable underside, presenting only its heavily armoured back and sides to attackers.
Discovery
Scelidosaurus was first described by Richard Owen in 1858. The original fossils were discovered at Charmouth, Dorset, England.
Scelidosaurus FAQ
What did Scelidosaurus eat?
Scelidosaurus was a herbivore that fed on
Early Jurassic plants including ferns, cycads, and conifers. Its small, leaf-shaped teeth were designed for cropping vegetation rather than grinding, suggesting it may have swallowed stones to help digest plant matter in its stomach.
How big was Scelidosaurus?
Scelidosaurus measured approximately 4 metres in length and stood about 1 metre tall at the hip. It weighed roughly 270 kilograms, making it a medium-sized dinosaur comparable to a large cow in terms of bulk.
When did Scelidosaurus live?
Scelidosaurus lived during the
Early Jurassic period, approximately 206 to 193 million years ago. This makes it one of the earliest known armoured dinosaurs, predating famous ankylosaurs like
Ankylosaurus by over 120 million years.
Where was Scelidosaurus found?
Scelidosaurus fossils have been discovered along the Jurassic Coast of Dorset, England, particularly around Charmouth and Lyme Regis. These coastal cliffs contain
Early Jurassic marine sediments where the dinosaur remains were preserved.
How do you pronounce Scelidosaurus?
Scelidosaurus is pronounced 'SKEL-id-oh-SORE-us'. The name breaks down into three parts: 'Skel-id-o' meaning limb, and 'saurus' meaning lizard.
What does Scelidosaurus mean?
Scelidosaurus means 'Limb Lizard' in Greek. The name was chosen by Richard Owen to reflect the dinosaur's distinctive limb bones, which were among the first parts of the skeleton to be discovered and studied.
How fast could Scelidosaurus run?
The running speed of Scelidosaurus is unknown, but its heavily armoured body and short, sturdy legs suggest it was not built for speed. It likely moved slowly and deliberately, relying on its defensive armour rather than running to escape predators.
What type of dinosaur was Scelidosaurus?
Scelidosaurus was an ankylosaur, one of the heavily armoured herbivorous dinosaurs. It belongs to the family Scelidosauridae and represents one of the most primitive members of the ankylosaur group, showing early stages in the evolution of dinosaur body armour.
Was Scelidosaurus related to birds?
No, Scelidosaurus was not closely related to birds. As an ornithischian dinosaur and specifically an ankylosaur, it belonged to a completely different group from the theropod dinosaurs that gave rise to modern birds. Scelidosaurus was more closely related to other armoured dinosaurs like
Ankylosaurus.
How many Scelidosaurus fossils have been found?
Several Scelidosaurus specimens have been discovered, including some remarkably complete skeletons. The most famous specimen includes much of the skull, backbone, limbs, and crucially, impressions of the skin and armour arrangement, making it one of the best-preserved early armoured dinosaurs known to science.
