XXXVI] 



CYCADEOIDEA 



413 



Seam off duly stone 



Shifting rullle 

 Top. date 

 Shaley clay 

 ShinglsLed 

 Soft slaty stone 

 Seam of clay 



Hard slate bed 



Bacon. Tier 



Aish 

 Bur 

 Great dirt led 



Top cap 

 Lowerdirf bed 



,,-,.. ,,f 



Wil beds ^ J^oticfl 



:R>rliarid'beds\^ 



FIG. 535. Section of the quarry 

 in the Isle of Portland in 

 which Cycadeoidea gigantea 

 was found. 



FIG. 536. Cycadeoidea gigantea. (The original is 

 in the British Museum; nat. size.) 



