486 THE WASATCH EPOCH. 



Second series. 



H. 



Length of third digital 012 



Proximal diameters < ^^^ical 006 



transverse 0085 



Distal diameters 5 ^^^t'^^l ^^ 



c transverse 008 



Ungual phalanges. 



Length 014 



vertical 0055 



Proximal diameters , „ 



< transverse 0O7 



It is, unfortunately, not possible to determine whether the phalanges 

 above measured belong to the anterior or posterior foot, owing to the fact 

 that they were associated with a collection of the bones of both in one por- 

 tion of the slab containing them. The bones of the posterior foot as far as 

 the phalanges, were continuous, while those of the metacarpus were want- 

 ing. It is, therefore, probable that these phalanges belong to the posterior 

 foot. 



Besides the specimen above described, Mr. Wortman brought portions 

 of four mandibles from the Wind River bad lands, and twelve from those 

 of the Big Horn. 



Restoration. — The limbs of this species are rather elongate for an 

 eocene mammal, and the anterior limbs are distinctly shorter than the pos- 

 terior. The size of the animal is that of a bull-dog, but the head is smaller, 

 and the neck rather shorter, and not nearly so robust. The limbs have 

 about the same proportions to the body as those of a bull-dog, but the ante- 

 rior ones are shorter. The proportions of the parts of the limbs, and of 

 the fore and hind limbs to each other, excepting the feet, are much as in 

 the collared peccary. The feet of tlie latter animal are longer than in 

 Phenacodus vortmani. 



We can thus imagine the Phenacodus vortmani as an animal of the com- 

 pai'atively slender build of the hull-dog, with a neck and head proportioned 

 'more as in the raccoon, and with the rump more elevated than the withers, • 

 as in the peccary. The feet resembled those of a tapir or rhinoceros, but 

 had a pair of short toes on each side, which did not reach the ground. To 

 this add a tail much like a dog's in proportions, and the picture is complete. 

 The diet of this animal was omnivorous, with a smaller proportion of animal 



