EditorialFossils of extinct sea urchins: Cidarites maximus 1, Cidarites coronatus 2, Cidarites subangularis 3, Cidarites nobilis 4, Spatangus retusus 6, Nucleolites scutatus 7, tooth of a Megalosaurus 8, and teeth of an extinct fish Gyrodus 9. Handcoloured lith...