Plate P3. Chiastozygaceae, Eiffellithaceae. Images with black background are cross-polarized light images; those with light backgrounds are phase contrast images. 1. Zeugrhabdotus cf. Chiastozygus spissus (Sample 198-1214A-8R-1, 1 cm). 2–5. Zeugrhabdotus xenotus (2, 3) Sample 198-1207B-28R-CC, (4, 5) Sample 198-1207B-27R-CC. 6. Zeugrhabdotus streetiae (Sample 198-1207B-27R-CC). 7. Diloma primitiva (Sample 198-1213B-14R-1, 58 cm). 8. Eiffellithus hancockii (Sample 198-1207B-37R-CC). 9–18. Eiffellithus monechiae (Sample 198-1270B-29R-CC). 19–23. Eiffellithus primus (Sample 198-1213B-23R-1, 97 cm). 24–27. Eiffellithus windii; (24) Sample 198-1213B-14R-1, 148 cm, (25–27) Sample 198-1213B-14R-1, 58 cm. 28. Eiffellithus striatus (Sample 198-1213B-9R-1, 124 cm). 29–32. Eiffellithus turriseiffelii; (29, 30) Sample 198-1207B-28R-CC, (31, 32) Sample 198-1207B-27R-CC. 33–36. Eiffellithus turriseiffelii-monechiae (trans.) (Sample 198-1207B-28R-CC). 37–39. Helicolithus compactus (Sample 198-1213A-11R-CC). 40–42. Helicolithus leckiei; (40) Sample 198-1207B-28R-CC, (41) holotype (Sample 198-1207B-28R-CC), (42) Sample 198-1207B-27R-CC.