139 



Orthoceras bartonense Spencer, is fairly common and 

 numerous tails of Dalmaniles limulurus (Green) occur. 

 Species of Conularia are not infrequent. 



5, 6 and 7. — These beds probably represent the 

 Rochester shales but they are not typical either in petro- 

 graphic character or fossil content. The characteristic 

 Rochester echinoderms have not been found here but 

 Rhynchotreia cuneata americana and some of the Bryozoa 

 and Graptolites of the Rochester occur. 



8 and 9. — These beds, which represent the Clinton 

 formation, do not differ essentially from those at Grimsby. 



10. — The Medina sandstone is less well defined in 

 this section than at Grimsby, but it shows some inter- 

 esting bedding features. 



11, 12 and 13. — The Cataract limestone and shales 

 may be seen in the excavations along the Jolly Cut road, 

 but a better locality for collecting is presented by the 

 quarries farther east. The fossils are the same as those 

 already given for Grimsby. 



14. — The Queenston shales are not well exposed 

 along the Jolly Cut road but they may be seen farther 

 west and at numerous places along the line of the rai lway 



BIBLIOGRAPHY: 



1. Logan, Sir W. E. Geological Survey of Canada, Rep. 



1863, pp. 310-334- 



2. Nicholson, H. A. Palaeontology of the Province 



of Ontario, Legislative Report, 



1875- 



3. Spencer, J. W. Geological Sketches in the Neigh- 



borhood of Hamilton. Canadian 

 Naturalist, Vol. VII, No. 8, 1875 



4. Spencer, J. W. Graptolites of the Niagara Forma- 



tion, Canadian Naturalist, Vol. 

 VIII, No. 2, 1876. 



5. Spencer, J. W. Palaeozoic Geology of the Region 



about the Western End of Lake 

 Ontario. Canadian Naturalist, 

 Vol. X, No. 3, 1882. 



6. Spencer, J. W. Niagara Fossils, Transactions of 



the St. Louis Academy of Science, 

 Vol. IV, No. 4, 1884. 



