Are These Beasts Jurassic, Triassic, or Cretaceous?
What period did Triceratops live during?
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What period did the Lystrosaurus live during?
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What period did the Plateosaurus live during?
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What period did the Tyrannosaurus rex live during?
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What period did the Homeosaurus maximiliani live during?
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What era did the Pleurosaurus live during?
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What period did the Coelophysis live during?
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What period did the Velociraptor live during?
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What period did the Confuciusornis live during?
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What period did the Ichthyornis live during?
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