Ankylosauria
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| Ankylosaurs Temporal range: Middle Jurassic—Upper Cretaceous
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| Euoplocephalus, an ankylosaur | |
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| Animantarx: a nodosaur | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Order: | †Ornithischia |
| Clade: | †Eurypoda |
| Suborder: | †Ankylosauria Osborn, 1923 |
| Subgroups | |
Ankylosaurs were herbivorous armoured dinosaurs of the order Ornithischia. Their armour was made of scutes (bony scales). They were quadrupeds with short and strong legs. Fossils of Ankylosaurs have been found on every continent. They include two distinct groups:
- Ankylosauria
- Ankylosauridae: armoured from their head to their club-ended tail.
- Nodosauridae: no tail club but spikes and bony bumps on body.