PLATE VII. 



Fig. 1. Slab from the yellow sandstone of Kiltorcan, Co. Kilkenny, showing at X 

 a portion of a frond of Archceopteris Tschermaki, Stur ; overlapping Bothroden- 

 dron kiltorkense, Haught., sp., and a fragment of A. hibernica, Forbes, sp. 



Fig. 2. Reproduction of photograph of the upper fertile part of the frond, showing 

 the two fertile segments or sporophyllules, each with a row of stalked 

 sporangia. (See text-figure 1.) 



Fig. 3. Reproduction of photograph of the lower part of a frond of Archaopteris 

 Tschermaki, showing the sculpturing of the midrib. Slightly magnified. 



(Photographed by T. Price of the Royal College of Science.) 



