Note: Do not rely on this information. It is very old.
Echinocorys is the name of the genus of Sea urchins which includes the chalk "Shepherd's Loaf." This is one of the best known of typical chalk fossils, but is usually referred to as Ananchytes ovatns. As this name, however, is of a later origin than Echinocorys scutatus, the latter is now adopted.