Authors Year Title
Currie 1954 Scottish Carboniferous Goniatites.
Transactions of the Royal Society. Edinburgh, 62, part 2 (No.14): 527-602, fig.1-9, 1tab., pl.1-4; Edinburgh.
Saunders & Work 1999 The Cravenoceras-Glaphyrites dilemma: Ammonoid sutures vs. shell shape in the Mid-Carboniferous.
In: Rozanov,A.Yu. & Shevyrev,A.A. (eds.), Fossil cephalopods: Recent advances in their study, Ross.Akad.Nauk, Paleont.Inst.:125-137,8 figs.,1 pl.,Mosk