14 PLATE VII. [Assembly 



Fossils of the Niagara group. 



1. Coral : Dictyonema retieormis ( p. 55). 



2. Do. : D. GRACILIS. 



3. Crinoid : Ichthyocrinus l^vis. 



4. Do. : Caryocrinus ornatus, side (arms gone). 



5. Do. : Same, base. 



6. Do. : EucALYPTOCRiNus DECORUS (entire specimen ; arms 



folded or closed). 



For Crinoids, see pp.45, 47. 



