|   | 
Authors | 
Year | 
Title | 
 
 | 
Korn & Tilsley | 
2002 | 
A well preserved early Namurian ammonoid fauna with Cravenoceras leion Bisat 1930 from Backdale Mine, Hassop, Derbyshire, England.	 
Proceedings of the Yorkshire Geological Society, 54 (2): 111-119.	 
 | 
 
 | 
Korn & Tilsley | 
2006 | 
Ammonoid assemblages from the Asbian B2b (Early Carboniferous: Mississippian) buildups of the Peak District, England.	 
Proceedings of the Yorkshire Geological Society, 56 (2): 111-150, 30 fig., 16 tab.	 
 | 
 
 | 
Tilsley & Korn | 
2009 | 
Chadian (Tournaisian--Viséan, Carboniferous) ammonoids from the Milldale Limestone Formation of the southern Peak District, England.	 
Proceedings of the Yorkshire Geological Society, 57: 217-234, 13 fig.	 
 |