Vol. s3-38, Issue 228, 1889December 01, 1889 EDT
The Skull of the Gigantic Ceratopsidae
The Skull of the Gigantic Ceratopsidae
Othniel Charles Marsh,
Marsh, O. C. (1889). The skull of the gigantic Ceratopsidae. American Journal of Science, s3-38(228), 501–506. https://doi.org/10.2475/ajs.s3-38.228.501