Ernst Haeckel (DE),
Tympanidium. / Stephoidea. – Ringel – Strahlinge.
Lithograph by Ernst Haeckel and Adolf Giltsch
Plate 71 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...