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Osborn, H.F., 1905.
Art. XIV. Tyrannosaurus and other Cretaceous Carnivorous Dinosaurs. Bull. Am. Mus. Nat. Hist. 21: 259-265. ≡ |
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Osborn, H.F., 1906.
Art. XVI. Tyrannosaurus, Upper Cretaceous Carnivorous Dinosaur (Second Communication). Bull. Am. Mus. Nat. Hist. 22: 281-296, pl. XXXIX. ≡ |