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- DescriptionDiplodocus by Hay 1910.jpg Diplodocus as depicted by Hay in 1910. Date 1910 Source From Oliver P. Hay, Proceedings of the Washington Academy...(1,382 × 874 (904 KB)) - 11:59, 25 September 2022
- BHL20909640.jpg On the manner of locomotion of the dinosaurs, especially Diplodocus, with remarks on the origin of the birds, by Oliver P. Hay ... Date Source...(4,464 × 2,814 (1.97 MB)) - 14:34, 26 December 2018