EditorialSpatangus stellifer, Print, Spatangus is a genus of heart urchins in the Spatangidae family. The genus is synonymous with the previously recognised genera Prospatangus Lambert, 1902 and Spatagus. There are nine recognised species. The type species is S...
EditorialAsteriidae starfish: common starfish, Asterias rubens, sea star, Hymenaster echinulatus 11, and sea star, Pteraster stellifer 12. Chromolithograph by Adolf Glitsch from an illustration by Ernst Haeckel from Art Forms in Nature, Kunstformen der Natur, L...