47 

 Megaobrops sblwynianus Cope). 



Menodus selwynianus, Cope, 1889. Yertebrata of the Swift-current river, III, American 

 Naturalist, vol. Ill, p. 628. 



Menodus selwynianus. Cope, 1891. The species from the Oligocene or Lower Miocene beds 

 of the Cypress hills ; Geol. Survey of Canada, Contr. to Can. Palseont., vol. Ill (quarto), 

 pt. I, p. 17, pi. V,figs, 3, 3a and 3b. 



Titanotherium selwynianus, Osborn, 1896. The Cranial Evolution of Titanotherium ; Bulletin 

 Amer. Mus. mt. Hist., vol. VIII, p. 193. 



Megacerops ? selwynianus, Osborn, 1902. The Four Phyla of Oligocene Titanotheres, idem, 

 vol. XVI, p. 99. 



The coossified nasal bones of one individual constitute the type of this species. They 

 are long and narrow, abruptly rounded in front and bent downward at the sides. The lower 

 surface is deeply excavated in a longitudinal direction. Professor Cope's full description, with 

 figures, will be found in part I of this volume. 



FIG. 7 



riG. 8 



Qoossified nasals of Megacerops selwynianus, fig, 7 viewed from above, fig. 8 from the left side. One-fourth the natural size. 



