Clypeidae
Clypeidae is a family of sea urchins belonging to the order Clypeasteroida. Fossil recordThis family is known in the fossil record from the Jurassic (Bajocian age) to Cretaceous (Santonian age) (age range: from about 164.7 to 94.3 million years ago). Fossils of species within this genus have been found in Egypt, France, Portugal, Saudi Arabia, Switzerland, Ukraine, the United Arab Emirates, Chile, Ethiopia, Germany, India, Kenya, Madagascar, Poland, Saudi Arabia, Somalia, Tunisia, United Kingdom and United States.[1] GeneraGenera within this family include:[1]
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