FIGURE 9 in Pygocephalomorphan crustaceans further emphasise the similarities between the Carboniferous Piesberg quarry in Germany and the Mazon Creek Lagerstätte in North America

FIGURE 9. Restoration drawings of Anthracaris gracilis (Meek and Worthen, 1865) from the Carboniferous of Germany with the three different shields recovered. (A, C, E) Dorsal aspect. (B, D, F) Ventral aspect. (A, B) Specimen 1.587. (C, D) Specimen Pal.590-2, the rostrum is broken off. (E, F) Specimen 1.228.