Figures 43–47 Eurypterus (Anthraconectes) mansfieldi C. E. Hall. Figure 43, a small, fairly perfect specimen, ×3; figure 44, large specimen, natural size, showing the long epimera; figure 45, a nearly entire small individual, showing the extremely slender telson and the doublures of the postabdominal segments; figure 46, the fourth endognathite, ×2; figure 47, enlargement of test with narrow, triangular scales. (From James Hall)