1 6 Hick LING, British Permian Footprints. 



well-defined British Carboniferous prints have yet been 

 described, though there is little doubt they exist. Mr. 

 Barkas referred to a find of good prints in the Lower 

 Carboniferous, near Otterburn, Northumberland, at the 

 British Association meeting at Newcastle-upon-Tyne, but 

 I have not been able to find any published account of 

 them (Barkas, '89). In the same year Mr. John Smith 

 published a description of a track of imperfect prints from 

 the Calciferous Sandstone, near West Kilbride, Ayrshire 

 (Smith, J., '89). The track is very like some of the 

 Permian ones, but more cannot be said. The same 

 gentleman is at present, I believe, engaged in an account 

 of further discoveries in the same rocks. There is in the 

 Manchester Museum a remarkable track from the Mill- 

 stona Grit of Tintwistle, Cheshire, described by Mr. 

 Binney, and named by him Chelichnus ingens (Binney, 

 '56). It is again too imperfect for comparison. A more 

 perfect track was described by Haines from the Millstone 

 Grit of Kilrush, Co. Clare, but in the absence of figures 

 the description is insufficient (Haines, '52). The foregoing 

 examples show at least that we may hope for more 

 satisfactory material if it is looked for. 



The North American Carboniferous rocks have yielded 

 quite a number of excellent tracks. Plate IV. is devoted 

 to some of these, together with some of the prints from 

 the Rothliegende of Thiiringia. A comparison of Fig. 27 

 {Ichniiiin ganipsodactybnn, Pabst, from Friedrichroda, 

 Thiiringia) with Fig. 31 {Dromopus agilis, Marsh, from 

 Coal Measures of Kansas), shows at once a remarkable 

 resemblance. From a careful examination of the original 

 fiigures, I believe the two forms are really almost identical, 

 and may be taken as indicating the presence of very 

 closely allied animals. (Pabst, :05, and Marsh, '94<7 and '9\h). 

 Similarly a marked resemblance exists between Fig. 25/'. 



