The Ceratopsia. Ceratopsia. Eig. 40.—A, Posterior view of right angular, surangular, and articular of type of Triceratops prorsus, No. 1822, Yale Museum; B, oblique front view of same; C, external view

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The Ceratopsia. Ceratopsia. Eig. 40.—A, Posterior view of right angular, surangular, and articular of type of Triceratops prorsus, No. 1822, Yale Museum; B, oblique front view of same; C, external view

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