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Riley |
1987 |
Type ammonoids from the Mid-Carboniferous boundary interval in Britain.
Courier Forschungsinstitut Senckenberg, 98: 25-37, fig.1-8, pl.1,2; Frankfurt a.M.
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Riley, Varker & Owens |
1987 |
Stonehead Beck, Cowling, Yorkshire, England: A British proposal for the Mid-Carboniferous boundary stratotype.
Courier Forschungsinstitut Senckenberg, 98: 159-177, fig.1-7, pl.1-3; Frankfurt a.M.
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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
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