Millward: Fossils from Meadville. Pa. 483 



York and not from Canada. The other species listed are found in 

 both regions. The evidence of the corals is then in favor of Canada 

 as the source of the drift of this region. The Chemung fossils have 

 no special value in this connection, as they could have been brought 

 from anywhere in the region immediately to the north of Meadville. 

 The presence of granitic pebbles also indicates the Canadian origin 

 of the drift, for Archaean rocks are not found native to New York, save 

 in the northeastern part of the state. 



Fossils of the Older Drift. 



The older drift (Kansan or Pre-Kansan), referred to above was not 

 found to be so fossiliferous as the Wisconsin. The boulders are largely 

 of local origin, many being of Sharon conglomerate. Only one piece 

 of fossiliferous chert was found, and the granitic pebbles were few in 

 number. 



The Fossils of the Bedrock. 



The formations exposed at Meadville are as follows, in descending 

 order, the section being that given by Dr. I. C. White in the Report 

 on Erie and Crawford counties, cited above : 



• 



17. Sharon conglomerate 45 ft. 



l6. Shenango shale 5° f^- 



15. Shenango sandstone 25 ft. 



14. Meadville upper shale 25 ft. 



13. Meadville upper limestone i ft. 



12. Meadville lower shale 40 ft. 



II. Sharpsville upper flags. No. I O is in this formation.... 50 ft. 



10. Meadville middle limestone I ft. 



9. Meadville lower limestone 2 ft. 



8. Sharpsville lower flags 12 ft. 



7. Orangeville shale 75 ft. 



6. Corry sandstone 20 ft. 



5. Cussewago upper shale 5 ^^• 



4. Cussewago limestone 2 ft. 



3. Cussewago middle shale 30 ft. 



2. Cussewago sandstone 25 ft. 



I. Riceville shale Soft. 



Fossils have been found in the Riceville shale, the Orangeville shale, 

 the Sharpsville upper and lower sandstones, the Meadville lower shale, 

 the Meadville middle limestone, the Meadville upper limestone, and 

 the Meadville upper shale. 



