103 



Pelecypods — 



Ctenodonta medialis Ulrich. 



Modiolopsis nana Ulrich. 

 Cephalopods — ■ 



Endoceras proteiforme Hall. 

 Triol bites — 



Calymmene callicephala Green. 



Ceraurus sp. 



Ogygites canadensis {Chapman) . 



Triarthrus beckii Green. 



Utica formation. — Overlying the Collingwood forma- 

 tion is a series of shales of a somewhat less bituminous 

 character which is correlated with the typical Utica of 

 New York. The more common fossils are : — 



Dalmanella testudinaria (Dalman). 

 Leptobolus insignis Hall. 

 Plectambonites sericeus (Sowerby) . 

 Rafinesquina alternata (Emmons). 

 Endoceras proteiforme Hall. 

 Calymmene callicephala Green. 

 Triarthrus spinosus Billings. 

 Ostracods sp. indet. 



Eden formation. — At Craigleith, the Eden shales are 

 exposed directly above the Utica. The common fossils 

 are: — 



Dalmanella testudinaria emacerata (Hall). 

 Plectambonites sericeus (Sowerby). 

 Trinucleus concentricus Eaton. 



Lorraine formation. — The Lorraine shales are not 

 actually exposed at this point but the fossils characteristic 

 of the formation may be obtained from the talus. The 

 species are the same as those already mentioned from 

 the Clay Cliffs, Manitoulin island. 



Richmond formation. — The grey Richmond shales and 

 limestones are not exposed in the section at Craigleith, 

 but they show to better advantage on the road between 

 Mair's Mills and Banks. The fossils are practically the 

 same as those from the Richmond exposure at the Clay 

 Cliffs, Manitoulin island. 



The red and green shales of the Richmond are not well 

 exposed, but fossils characteristic of the formation are 



