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Ankylosaurus lived from 66.5 to 65.5 million years ago. They died out 65.5 million years ago during the K-T extinction event, the same event that killed off 75% of Earth's species, including all non-avian dinosaurs, the plesiosaurs, pterosaurs, mosasaurs, and many, many more. The most widely accepted theory for their extinction is that a 6 mile wide asteroid crashed into the Yucatan Peninsula of Mexico, leaving a 100 mile wide crater. Enough dust and ash was launched into the atmosphere to block sunlight for months or years. Without sunlight, plants withered and died, and then the herbivores, like Ankylosaurus, starved to death. In turn, predators like Tyrannosaurus died out, too, because all of their prey disappeared.

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11y ago
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11y ago

Ankylousaurus died out 65.5 million years ago as a result of the K-T extinction event. This extinction event killed off 75% of Earth's species, including all non-avian dinosaurs, the plesiosaurs, pterosaurs, mosasaurs, and many, many more. The most widely accepted theory for their extinction is that a 6 mile wide asteroid crashed into the Yucatan Peninsula of Mexico, leaving a 100 mile wide crater. The dust and ash that was launched into the atmosphere by the impact blocked sunlight for months or years. Without sunlight, plants died, and then the herbivores, like Ankylosaurus, starved. In turn, predators like Tyrannosaurus died out, too, because all of their prey disappeared.

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8y ago

A pack of dinosaurs could have killed it.

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Q: What killed off the Ankylosaurus dinosaur?
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How did an Ankylosaurus protected?

Ankylosaurus's armor was so impenetrable that predators like Tyrannosaurus and dromaeosaurid dinosaurs probably never attacked it. If a predatory dinosaur attacked it, Ankylosaurus could have killed the enemy with a blow from its tail club.


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An Ankylosaurus maybe??


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The ankylosaurus was believed to be less than 6' tall.


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It would have to hurt its stomach.


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Ankylosaurus weighed 13,000 pounds, or 6.5 tons. This makes them the largest species of ankylosaurian dinosaur.


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An ankylosaurus is a large, herbivorous dinosaur which lived in the Cretaceous period, noted for its heavy armour and club-like tail.


How long is a ankylosaurus?

Ankylosaurus is the largest known species of ankylosaurian dinosaur. They grew to be 25 to 30 feet long and weighed 6.5 tons.


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