|   | 
Locality | 
Layer | 
 
 | 
Great Britain, England,Cornwall, Penfoot | 
Yeolmbridge Beds | 
 
 | 
Great Britain, England,Cornwall, Yeolmbridge Slate Quarry | 
Yeolmbridge Beds | 
 
 | 
USA, Nevada, White Pine Co., Pancake Range, W slope | 
Joana Lst. | 
 
 | 
USA, Utah, Rich Co., Randolph quad., Brazer canyon | 
Paine member of Lodgepole Lst., 6,0-6,6m | 
 
 | 
USA, Utah, Rich Co., Randolph quad., Brazer canyon | 
Paine member of Lodgepole Lst., 6,6-7,2m |