394 L. D. Burling — Protichnites and Climactichnites, 



the width of the track ; ij) at one end of several of the trails 

 convex oval bodies as wide as, or slightly wider than, the trail 

 and little more than 2-|- times as long are present (see figs. 3 

 and 4). Wood worth'' figures these as symmetrically rounded at 

 both ends, Walcott's specimen'" shows the outline at only one 



Fig. 4. 



Fig. 5. 





^$M 



Upper Cambrian Trails, Mooers, N. Y. 



Fig. 4. Climactichnites wilsoni (Logan), x 1/25. (After Clarke.) State 

 Mnseam, Albany, N. Y. 



Fig. 5. From a photograph of a cast of the slab shown in fig. 1, in the 

 Brooklyn Museum. The animal that made the trail is now believed to have 

 moved away from the oval body end. 



end, but the slab in the Museum at Albany,"' of which there 

 is a partial replica in the Brooklyn Museum (see figure 5), shows 

 specimens with one end rounded, the other (the end toward 

 the trails) nn symmetrically arched outward, symn}etrically 



