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.