Ernst Haeckel,
Adolf Giltsch
Clypeaster. / Echinidea. Igelsterne.
Lithograph by Ernst Haeckel and Adolf Giltsch
Plate 30 from Kunstformen der Natur. This is one of the 100 pop science biology illustrations that were published from 1899 – 1904 in Leipzig by Ernst Haeckel through Verlag des Bibliographischen...
