Figure 3.1 - 3.20. 3.1-3.3. Cibicides lobatulus (Walker and Jacob), 1798. 3.1. Spiral view. Middle Pleistocene. Slindon Sands Member, Eartham Formation. Boxgrove Quarry 2, GTP13, West Sussex, England. J. E. Whittaker’s collection, The Natural History Museum, London. 3.2. Apertural view of specimen 1. 3.3. Umbilical view of specimen 1. Scale Bar = 54 microns. 3.4-8. Cibicidoides barnetti (Bermúdez), 1949. 3.4. Spiral view. Holotype. Middle Oligocene. Sombrerito Formation, Dominican Republic, Benefactor Province, Canada Gerinaldo. Smithsonian Collection. USNM 62546. 3.5. Umbilical view. Holotype. Scale Bar = 190 microns. 3.6. Umbilical view. Oligocene. ODP Leg 184, Site 1148A, 33X-3, 70-72cm. Scale Bar = 117 microns. 3.7. Spiral view. Oligocene. ODP Leg 184, Site 1148A, 33X-3, 70-72cm. Scale Bar = 112 microns. 3.8. Apertural view. ODP Leg 184, Site 1148A, 33X-3, 70-72cm. Scale Bar = 111 microns. 3.9-3.14. Cibicidoides bradyi (Trauth) 1918. 3.9. Spiral view. Recent. Challenger Station 323, South Atlantic Ocean (1900 fathoms). Natural History Museum, London. NHM ZF2523. Scale Bar = 62 microns. 3.10. Apertural view of specimen 9. 3.11. Umbilical view of specimen 9. 3.12. Spiral view. Early Oligocene. ODP Leg 114, Site 703A, Core 10, Section 5, 88-92cm. Scale Bar = 55 microns. 3.13. Apertural view of specimen 13. 3.14. Umbilical view of specimen 13. 3.15-3.20. Cibicidoides micrus (Bermúdez), 1949. 3.15. Spiral view Holotype. Early Eocene. Abuillot Formation, Haiti Central Plain, Abuillot River Traverse. Smithsonian Collection. CC 62431. 3.16. Apertural view. Holotype. 3.17. Umbilical view. Holotype. Scale Bar = 60 microns.3.18. Spiral view. Eocene. DSDP Leg 48, Hole 402A, Core 2, Section 1, 18-22cm. Scale Bar = 113 microns. 3.19. Apertural view of specimen 18. 3.20. Umbilical view of specimen 18.  (To see enlargement, click on image.)