PLATE 85. 
CYATHOPHYLLUM ROBUSTUM. Devonian. 
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2. 
3. 
Adult corallum: left lateral view. 
Right lateral view of a corallum. 
Calyx of a corallum, the linear edges of whose lamelle are broken 
down so as to show the cellulose inner walls. 
Right lateral view of a young corallum. 
(Central specimen.) View of calyx and central exterior of an un- 
symmetrical jejune corallum, with well-preserved acute lamelle 
but abnormally shaped diaphragm. 
The examples figured were cut from the Lower Devonian rocks, 
Falls of the Ohio. 
Example 4 is from the collection of Mr. Gaines; the others from 
the collection of the author. 
