PLATE 63. 



Cladopora dextata, Nov. Spec. Devonian. 



1. Front lateral view of a corallum from the Lower Devonian, Falls of 



the Ohio. 



2. Fragment of a frond from the ferruginous clay of the Lower Devo- 



nian, near Louisville. 



3. Portion of a pedicle obtained in situ two feet above the horizon of 



example 1, Falls of the Ohio. 



Cladopora ricta, Nov. Spec. Devonian. 



4. Rear view of a fragment showing fronds laterally joined by approxi- 



mation. 



5. Front lateral view of the base of an example. 



Both specimens gathered from the Lower Devonian rocks, Falls of 

 the Ohio. 



Platyaxum (Nov. Gen.) foliatum, Nov. Spec. Devonian. 



6. Front lateral view of the lower half of a corallum from the Lower 



Devonian, Falls of the Ohio. 



Dexdropora orxata. Devonian. 



7. Side view of a corallum from the dark-red clay derived from the 



decomposition of the encrinal limestone of the Upper Devonian, 

 near Louisville. 



Dexdropora proboscidalis. Devonian. 



8. (Artificially attached, for convenient photographic delineation, to the 



side of the Cyathophyllum imbedded in the rock matrix of C. 

 Dentata, Fig. 1.) Frond from the Lower Devonian, Falls of the 

 Ohio. 

 The specimens figured in this plate belong to the collection of the 

 author. 



