68 STUDIES IN GEOLOGY, No. 4 



II 



Figs. 1,2. Weichselia peruviana (Neumann) Zeiller. 



Fig. i. Upper side of frond showing reflexed basal pinnules. 



Fig. 2. Pinnule showing venation, X 14. 

 Fig. 3. Otozamites Zeilleri Berry. 

 Fig. 4. Equisetites sp. 

 Figs. 5,6. Thuites leptocladoides Berry. Fig. 6 enlarged 3 times. 



