SUMMARY Ammonoids from the Chadian Waulsortian mud-mounds of the Peak District (Derbyshire and Staffordshire) have been examined utilizing new collections and additional museum material. The genera Fascipericyclus , Ammonellipsites , Helicocyclus , Dzhaprakoceras , Eonomismoceras , Polaricyclus and Merocanites are present. One new species, Eonomismoceras wettonense sp. nov., is described. The independent status of Fascipericyclus fasciculatus and F. furcatus is confirmed.
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Tilsley et al. (2009) studied this question.
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