The skull of Torosaurus.

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1892
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Abstract
AI{T.XL-The 81i'llU q/ Tor()8(I.'l{l'ItS;by O. O. MARSH.(With Plates II and III.)IN this .J olll'nal for September last, the writer described a new and remarkable genns of Oeratopsiam, represented by two well-marked species.'fIII the type specimen on which the genus was based, the greater portion of the skull' is presel'ved, and this presents so lllany points of interest, that a figure of it, one-twentieth natural size, is here given in Plate II.The second species is represented also by the skull, which, although not complete, supplements the type in several important respects, and figures of its posterior portions are likewise given in the accompanying plates.Both specimens are of gigantic size, one skull measuring' five and one-half feet across, the parietal crest, and the other is nearly as large.They differ widely, moreover, from the huge horned Dinosaurs hitherto found in the same general horizon, and pt'esent characters in the skull of much interest.In TOI'osa1~}'1tS !aJu8, the species first described, the skull appears wedge-shaped when seen from above, as shown in Plate II.The facial pOt'tion is vel'.Y short and pointed, and somewhat suilline in forlll, The nasal horn-core ,is compressed, with a sharp apex directed forward.The frontal horn-cores are large, and strongly inclined to the front, extending' apparently in advance of the nasal protuberance.The long, slender squamosals di verge rapidly as they extend backward, their onter margins being neady on a line with the facial borders in the maxillary region.
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Authors O. C. Marsh
Journal american journal of science
Year 1892
DOI
10.2475/ajs.s3-43.253.81
URL
https://doi.org/10.2475/ajs.s3-43.253.81
Keywords Keywords not found

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