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Temporal range: Early Cretaceous – Late Cretaceous
Ankylosaurus magniventris
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Order: Ornithischia
Suborder: Ankylosauria
Family: Ankylosauridae
Brown, 1908
Type species
Ankylosaurus magniventris
Brown, 1908
  • Ankylosaurinae Brown, 1908
  • Syrmosauridae Maleev, 1952

Ankylosauridae was a family of herbivorous dinosaurs with armored plates on their back. Ankylosaurs were not only heavily armored but were also heavily armed: some ankylosaurs had clubbed tails and or shoulder spikes.

Ankylosaurs are almost completely armored, and even if they had soft underbellies, they would be so heavy it would be almost impossible to knock them over.

Ankylosauridae are also known to have existed all across of the Northern Hemisphere, and primarily through the Late Cretaceous period. The most largest and well known Ankylosaur is Ankylosaurus itself. They've also been known to be one of the many species the Tyrannosauridae have coexisted with. Its probable that they share some sort of relationship, since where a Tyrannosaur rules, a species of Ankylosaur exists in the same area as well.

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