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File:Triceratops holotype.jpg



Type specimen of the type species of Triceratops, T. horridus (YPM 1820, Yale University Museum).

Date 1907
Author Hatcher, J. B. , O. C. Marsh , and R. S. Lull . 1907. The Ceratopsia. U.S. Geological Survey Monograph 49, 300 p


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