. The Ceratopsia. Ceratopsia. 140 THE CERATOPSIA. Triceratops obtusus Marsh. 1898. Type (No. 4720, U. S. National Museum) consists of portion of skull from Laramie beds of Converse County, Wyo. Original description in Am. Jour. Sci., vol. 6, July, 1898, p. 92. Nopcsa, F. Baron, Foldtani Kozlony, Budapest, 1901, vol. 31, p. 271. Osborn, H. F., Contr. Canadian Pal., vol. 3 (quarto), pt. 2,1902, p. 14. Walcott, C. D., Science, new ser., vol. 11,1900, p. 23 (T. obtusa). Professor Marsh described this species as follows: A second new species, which may be called Triceratops obtusus, is represented
. The Ceratopsia. Ceratopsia. 140 THE CERATOPSIA. Triceratops obtusus Marsh. 1898. Type (No. 4720, U. S. National Museum) consists of portion of skull from Laramie beds of Converse County, Wyo. Original description in Am. Jour. Sci., vol. 6, July, 1898, p. 92. Nopcsa, F. Baron, Foldtani Kozlony, Budapest, 1901, vol. 31, p. 271. Osborn, H. F., Contr. Canadian Pal., vol. 3 (quarto), pt. 2,1902, p. 14. Walcott, C. D., Science, new ser., vol. 11,1900, p. 23 (T. obtusa). Professor Marsh described this species as follows: A second new species, which may be called Triceratops obtusus, is represented by a large skull belonging to the same genus. The nasal horn core of this skull is very short and obtuse and so well preserved that it indicates the normal form and size. The entire length of this horn core is only 1 inch. Its summit is 3£ inches behind the premaxillary suture. The width of the nasals beneath the horn core is 5J inches. The length of the squamosal from the quadrate groove to the posterior end is about 36 inches and its greatest width is 19 inches. These two skulls (types of T. calicornis and T. obtusus) were both found by J. B. Hatcher in the Ceratops beds of Converse County, Wyo. The type (No. 4720, U. S. National Museum) of the present species consists Lj^ of a pair of mandibular dentaries and Mwpma. S^^fe^^fescsSE^^^^^k the anterior portion of the nasals, a left ^«^Ha ^^^^^^^^^^R-^^Ha maxillary, a squamosal, parts of a ptery- goid, and a vertebra. The specific name was suggested by the character of the nasal horn core. The nasals, as shown FlG"if^nteTfaP^rti°^ in the accompanying figures, are ex- (No. 4(20, U. S. National Museum). A, Side view; B, superior view; a, r •> ° ° ; anterior. One-eighth natural size. tremely broad, and the nasal horn core is reduced to a broad, rounded, and ru- gose prominence, marked with a number of deep vascular grooves. The dentary is exceptionally deep and the teeth are unusually large. Below the base of the cor
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