Two New Species of Fossil Footmarks. 55 



Remarks. — It may be that what I have reckoned as the first 

 phalangeal impression on the two inner toes was made by meta- 

 carpal bones : and it is also possible, on the other hand, that 

 both the impressions which I have described as having a meta- 

 carpal origin on the two outer toes, may have been phalangeal. 



Otozonm Moodii. (Fig. 1, A.) 



Divarication of the outer toes, 35° ; do. of the inner and sec- 

 ond toe, 15° : do. of the outer and third toe, 12° ; do. of the two 

 middle toes, 5°. Length of the inner toe, 85 inches; do. of the 

 second toe, 10*25 inches; do. of the third toe, 8 inches; do. of 

 the outer toe, 8-5 inches; do. of the foot, 20 inches; do. of the 

 step, about three feet. Distance between the extremities of the 

 outer toes, 13 inches. Width of the foot behind the phalanges 

 and metacarpus, 5 inches; do. of the toes, from 2 to 3*25 inches. 

 Length of the phalanges of the inner toe : — proximal phalanx, 3 

 inches; of the second, 2 inches; of the third, 3-4 inches (?) do. 

 of the second toe : — proximal, 2-4 inches ; second, 2*5 inches ; of 

 the third, 2-9 inches ; do. of the fourth, 2*6 inches (?) ; do. of the 

 proximal metacarpal boneof the third and fourth toes, 3-5 inch- 

 es; of the second, 4 inches : of the first phalanx of the third toe, 

 2 inches ; of the second, 2 inches ; of the distal, 3*8 inches (?) ; 

 do. of the outer toe: — proximal, 1-6 inch; of the second, 1-6 

 inch; of the distal, 5-4 inches (?) 

 the feet, 30°. Distance to the i w 



heel, from the average line of direction along which the animal 

 moved, 2*5 inches. Integuments of the bottom of the foot, ru- 

 gose and irregularly papillose. 



Distinctive Characters. — Four thick toes directed forward and 

 making strong phalangeal impressions, distinguish this animal from 



axes 



ght and 



in 



England. The number of phalanges, also, in the toes, separates 

 it from every other. As only one of the tracks of the animal 

 is entire enough for description, I should have suspected some 

 deception in both these characteristics; but sufficient remains 

 of the other tracks, to identify them by their repetition ; par- 

 ticularly in respect to the phalangeal impressions of the two 

 outer toes. 



Situation and character of the Deposits containing these 

 tracks—The tracks above described are all in relief, and the 

 rock is a very coarse gray sandstone, the grains being often as 

 large as buckshot. Yet every thing is exhibited most distinctly. 

 Nearly the whole slab is covered with rain drops most beautifully 

 exhibited, and shown upon the drawing, fig. 1. The tracks appear 

 to have been made upon a fine micaceous sand, which lias little 

 more coherence now than when the animals trod upon it. But 

 the coarse material that was subsequently brought over this fine 



