limestone | Limestone | Mokattam | Carboniferous Limestone | Limestone Coast | Corallian Limestone | Styrian-Lower Austrian Limestone Alps | Magnesian limestone | Limestone, West Virginia | Limestone pavement | limestone pavement | Limestone High School | Limestone County | Keystone (limestone) | Indiana Limestone | Indiana limestone | Bedford limestone | Anamosa Limestone |
The type species, E. aegyptiacum, is known from the Lutetian Mokattam Limestone of Cairo, Egypt.