PLATE 35, 
THECIA RAMOSA. Devonian. 
1. Lateral view of a nearly perfect corallum from the Lower Devonian, 
Falls of the Ohio. Collection of the author. 
[Nors. —The apex of growth of this example is just above the figure 1.] 
2. Upper portion of a frond (inverted) from the same horizon and place. 
Collection of the author. 
