Classification of Brown 1907
G. †Tyrannosaurus Osborn 1905 [tyrant lizard]
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†Tyrannosaurus rex Osborn 1905 [tyrant lizard king]
G. †Triceratops Marsh 1889
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†Triceratops brevicornus Hatcher and Lull 1905
†Triceratops serratus Marsh 1890