PLATE 112. 



Eeidophyllum simcoense. Devonian. 



1. Lateral view of coralletis, from the Lower Devonian, Falls of the 



Ohio. 



Eeidophyllum arundinaceum. Devonian. 



2. Lateral view of corallets, partly imbedded in rock matrix, from the 



Lower Devonian, Falls of the Ohio. 



DiPHYPHYLLUM ARCHiACi. Devonian. 



3. View of the np})er surfiice of a corallum, whose corallets are above 



the average size; from the dark-red encrinal-limestone clay of 

 the Upper Devonian, near Louisville. 

 These specimens are from the collection of the author. 



