FIGURE 4. Partial suture patterns, overlain and scaled using two landmarks (purple dots) bounding the lateral element. See Table 1 for total area spanned by the sutures (represented here by the tan polygons). 4.1 Coilopoceras springeri. Eight left (blue) and eight right (red) lateral elements. 4.2 Neogastroplites muelleri. Nine left (blue) and nine right (red) lateral elements. 4.3 Metadimorphoceras subdivisum. Six left (blue) and six right (red) lateral elements. 4.4 Somoholites spp. Nine right (red) lateral elements.