Summary[edit] Description: English: A corona of the sea-urchin Echinus esculentus. Date: 2010.03.20, edited 2010.04.25. Source: Created by Esko Jäntti. Author: Esko Jäntti.
Summary[edit] Description: English: Figure from the 11th edition of Vestiges of the Natural History of Creation published anonymously by Robert Chambers. Date: 31 December 1860. Source: https://archive.org/details/vestigesofnatura1860cham. Author: Robert Chambers (1802-1871).
Summary[edit] Description: Français : Oursin. Date: between 1907 and 1910 date QS:P,+1950-00-00T00:00:00Z/7,P1319,+1907-00-00T00:00:00Z/9,P1326,+1910-00-00T00:00:00Z/9. Source: Le Larousse pour tous. Author: Adolphe Millot. Other versions:.