|
Locality |
Layer |
|
USA, Maryland, Allegany Grove |
Chemung M., Jennings Fm. |
|
USA, Maryland, Oakland |
Chemung M., Jennings Fm. |
|
USA, Maryland, Polish Mountain, Williams road |
Parkhead M., Jennings Fm. |
|
USA, Maryland, White Sulphur Branch, NE of Pratt |
Parkhead M., Jennings Fm. |
|
USA, New York, Tioga Co., Owego |
Cayuta Shale |