PLATE 64. 



Cladopora iowensis. Devonian. 



1. 2. 3. 4. Fragments from the Lower Devonian, Falls of the Ohio. In 

 Fig. 3 the specimen is inverted. Collection of the author. 



Striatopora huronexsis. Niagara. 



5. Fragment from the Upper Niagara red clay, near Louisville. Col- 



lection of the author. 



6. Front side view of an eroded specimen, showing mural pores and 



faint longitudinal striae, from the white clay of the Upper Niagara. 

 Collection of Mr. McConathy. 



Striatopora linn^eana. Devonian. 



7. Fragment (prostrate) from the Lower Devonian rocks two feet above 



the Niagara and Devonian passage-beds, near Louisville. Col- 

 lection of the author. 



8. Fragment (prostrate) from the ferruginous clay of the Lower Devo- 



nian, near Louisville. Occurring in a horizon eight feet above 

 that of example 7. Collection of the author. 



Striatopora alba, Nov. Spec. Devonian. 



9. 10. 11. Portions of fronds from the red clay beds of the Middle 



Devonian, near Louisville. Collection of the author. 



Cladopora gracilis, Nov. Spec. Devonian. 



12, 13. Fronds from the rotten chert of the Middle Devonian, Falls of 

 the Ohio. Example 12 is artificially attached to the matrix of 

 example 13. The latter fails to photograph satisfactorily because 

 of its color. Collection of the author. 



