84 Lymm. 



considerable number; the yielding sand received the 

 transcript of their paws, just as we may see the sands at 

 Southport printed by the feet of sea-birds; the tracks 

 became covered up by successive deposits of sand the 

 level of the sea in time became lower the entire mass 

 of mud-flat became consolidated and elevated and now, 

 along with hardened ripple-marks, such as we may 

 observe at Southport every day, they are found as faith- 

 fully preserved as if left only an hour before. In Lymm 

 churchyard, one of the tombstones contains a Labyrin- 

 thodon footprint; and at Bowdon there is a garden- 

 wall into which have been built a great number of simi- 

 lar slabs. 



FIG. 12. Probable form of the Labyrinthodon. 



From such remains of the animal as have been dis- 

 covered, it would appear to have resembled a frog in 

 general figure, though in size comparable with a calf. 

 Professor Owen has theoretically reconstructed it as 

 shown above. 



The " Trias " consists itself of distinct members, three 



