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37 dinosaurs beginning with A
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Aardonyx
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Abelisaurus
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Achelousaurus
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Achillobator
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Acrocanthosaurus
Acrocantho-saurus
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Aegyptosaurus
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Afrovenator
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Agilisaurus
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Alamosaurus
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Albertaceratops
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Albertosaurus
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Alectrosaurus
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Alioramus
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Allosaurus
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Alvarezsaurus
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Amargasaurus
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Ammosaurus
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Ampelosaurus
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Amygdalodon
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Anchiceratops
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Anchisaurus
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Ankylosaurus
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Anserimimus
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Antarctosaurus
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Apatosaurus
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Aragosaurus
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Aralosaurus
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Archaeoceratops
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Archaeopteryx
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Archaeornithomimus
Archaeornitho-mimus
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Argentinosaurus
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Arrhinoceratops
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Atlascopcosaurus
Atlascopco-saurus
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Aucasaurus
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Austrosaurus
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Avaceratops
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Avimimus