Article" Fossil Focus: Ammonoids" by Christian Klug, Jocelyn A. Sessa, Kenneth De Baets, René Hoffmann published on PALAEONTOLOGY[online] with in the Fossil Focus category.... by Kenneth De Baets1, René Hoffmann2, Jocelyn A. Sessa3 and Christian Klug4. Introduction: Ammonoids (Ammonoidea) are an extinct group of marine