Figure 10. Unknown field specimens; 1. TMM NPL 1848-A suture tested in the Coilopoceras springeri Left Template. Similar alignment, with TMM NPL 1848-A being slightly taller in the second and third elements; 2. TMM NPL 1848-AA suture tested against the right holotype suture of Coilopoceras springeri. Similar alignment, with TMM NPL 1848-AA being slightly taller in the first, second. and third elements. The fourth element is not aligned; 3. TMM NPL 1849 suture tested against the Coilopoceras springeri right/left template. Very similar alignment; 4. TMM NPL 1850-A suture tested against the Coilopoceras springeri left template. Very similar alignment; 5. TMM NPL 1851 right suture tested against the Coilopoceras springeri right/left template. The suture fits within the boundaries of the template; 6. TMM NPL 1851 left suture tested against the Coilopoceras springeri left template. The suture fits closely within the boundaries of the template; 7. TMM NPL 1852 suture tested within the Coilopoceras springeri right/left template. This suture fits within the boundary of the template; 8. TMM NPL 1853 suture tested within the Coilopoceras springeri right/left template. This suture fits within the boundary of the template; 9. TMM NPL 1854 suture tested within the Coilopoceras springeri right/left template. This suture fits within the boundary of the template; 10. Differences between TMM NPL 1855 suture and Coilopoceras springeri USNM 278120. Elements are mostly aligned. An unusual split in the lateral element closest to the venter occurs in both the TMM and USNM specimens, as indicated by the arrow.