194 



UNGULATA 



ORDER VII 



or ox-like dentition may be expected among the Gelocinae 

 Oligocene, and probably in Lower Miocene also ; Europe 



Gelocus Aymard (Fig. 267). Superior molars low 

 cusps; internal cones of inferior molars robust. Pre- 

 molars simple, elongated ; anterior lower premolar small. 

 Several species of different sizes in the Upper Eocene 

 and Oligocene. 



Paragelocus Schlosser. Superior molars quinque- 

 tubercular. Oligocene. 



Pseudogelocus Schlosser. Premolars complicated. 

 Oligocene. 



Eocene and 



with four massive 



Fig. 2 



Prodremotherium elowjatum Filhol. Oligocene (Phosphorites), Quercy. A, 

 Upper jaw from below. B, Lower jaw from above and inner side. 3/4. 



Fia. 269. 



Prodremotherium elongatum 

 Filhol. Oligocene (Phosphor- 

 ites), Quercy. A, Metacarpus 

 from behind. B, Tibia, tarsus, 

 and metatarsus from front. 

 C, Metatarsus from behind. 

 Co, Calcaneum ; F, rudiment 

 of fibula ; T, tibia ; a, astra- 

 galus ; cb+sc, cubo-scaphoid. 



Bachitherium Filhol. 

 Oligocene Phosphorites. 



Frodremothennin Filhol (Figs. 268, 269) 

 Oligocene Phosphorites. 



Premolars : f . Fourth inferior premolar complicated. 

 Premolars : f , all rather simple. 



Family 12. Hypertragulidae.^ 



Skull primarily without bony appendages, later with antlers covered with 

 integument. Tympanic hxdlae often large and hollow. Orbits large, prominent, 

 completely closed posteriorly. Ethmoidal vacuities present. Mandible long and 



slender. Dental formula : ' ' • Inferior canine functioning as fourth 



incisor. Cheek teeth brachyodont. Inferior molars without fold on posterior part 



^ Matthew, W. 1)., Revision of the Hypertragulidae. Bull. Amer. Mus. Nat. Hist., New 

 York, 1902, p. 311.— Osteology of Blastomeryx. Ibid., 1908, p. 5Zb.— Scott, W. B., White River 

 Selenodouts. Trans. Wagner Free Inst. Sci., Philadelphia, 1899. 



