Authors Year Title
Foord & Crick 1897 Catalogue of the fossil Cephalopoda in the British Museum (Natural History). Part III, containing the Bactritidae and part  of the Suborder Ammonoidea).
pp.I-XXXIII, 1-303, 145 figs., London.
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.