DISCOVERY OF THE TITANOTHERES AND ORIGINAL DESCRIPTIONS 



187 



Figure 130. — Type (holotype) of Telmatherium? incisivum 

 Lett upper teeth, crown view. After Douglass, 1909. One-half natural size. 



Millimeters 



Transverse diameter of p' 12 



Anteroposterior diameter of p' 22 



Transverse diameter of p^ 21 



Anteroposterior diameter ofp^ 28 



Transverse diameter of p^ 28 



Anteroposterior diameter ofp' 27 



Transverse diameter of p* 33 



Anteroposterior diameter ofp' 30 



Transverse diameter of m' 44 



Anteroposterior diameter of m' 40 



Transverse diameter ofm.^ 63 



Anteroposterior diameter ofm^ 55 



Transverse diameter ofm^ 56 



Anteroposterior diameter ofm^ 51 



Width of palate between canines? 68 



Width of palate between first premolars 54 



Width of palate between last molars 83 



Etymology. — uintensis, in reference to the 

 Uinta Basin. 



Present determination. — The generic refer- 

 ence to Manteqceras appears to be correct. 

 The species is a valid one. 



Dolichorhinus heferodon Douglass, 1909 



Cf. Dolichorhinus heterodon Douglass, this monograph, 

 page 416 



Original reference. — Carnegie Mus. Annals, 

 vol. 6, No. 2, pp. 310-311, text figs. 6, 7, 

 pi. 13, fig. 3, 1909; "issued November 6, 1909" 

 (Douglass, 1909.1). 



Type locality and geologic horizon. — Uinta Basin, 

 Utah, 6 or 7 miles northeast of well 2; from "upper 

 part of horizon B or lower part of horizon C"; 

 Eohasileus-DolicJiorJiinus zone (Uinta B 2). 



Type. — A skull lacking the front teeth and both 

 zygomatic arches (Carnegie Mus. 2340). (See figs. 133 

 and 134.) Discovered by Mr. J. F. Goetschius. 



The infraorbital foramen is large. The infraorbital shelf is 

 represented by a protuberance, which is thickened on the free 



Figure 132. — Type (holotype) of Manteoceras uintensis 

 Upper teeth. Carnegie Mus. 2388. After Douglass, 1909. One-third natural size. 



Specific characters. — Douglas writes: 



The skull is long, narrow, and moderately high. The face is 

 short and the brain case long. The free nasals are long, the 

 posterior opening of the anterior nares extending well backward 

 toward the orbit. The lower borders of the nasals approach 

 each other, but this is probably in part due to lateral crushing. 



Figure 131. — Type (holotype) skull of Manteoceras uintensis 



Carnegie Mus. 2388. After Douglass, 1909. Ai, Palatal view; Aj, view of right side. 

 One-fifth natural size. 



outer surface. If there were horn cores 

 above the orbit they ■v\'ere very small. The 

 long brain case was apparently arched 

 from before backward, the posterior de- 

 scent to the crest of the occiput being very 

 steep, though this may be somewhat ex- 

 aggerated by crushing. The occipital con- 

 dyles are very large. The median portion 

 of the occiput above them is convex, while 

 above this there is a large concavity. The 

 postglenoid processes are not excessively large. 



The premolars are small, the last being very decidedly 

 smaller than the first molar. The first premolar is not pre- 

 served, but it was evidently a simple tooth. In the last three 

 premolars there is a lobe or buttress on the antero-external 

 portion of the tooth, which makes the anterior margin oblique. 



