Keywords: Haeckel Leptomedusae.jpg top left Aequorea discus <small> Haeckel </small> Aequorea pensilis <small> Eschscholtz 1829 </small> bottom view top right Zygocanna diploconus <small> Haeckel </small> Zygocanna diploconus <small> Haeckel 1879 </small> side view bottom left Zygocanna diploconus <small> Haeckel </small> bottom view center right Polycanna germanica <small> Haeckel </small> Aequorea forskalea <small> Forskål 1775 </small> side view center left Zygocannula diploconus <small> Haeckel </small> Zygocanna diploconus side view bottom right Orchistoma elegans <small> Haeckel </small> Orchistoma sp side view Kunstformen der Natur 1904 plate 36 Leptomedusae see http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_036_300 html here http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_036_text_1_200 html here and http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_036_text_2_200 html here creator Ernst Haeckel 1904 public domain due to age PD-old Kunstformen der Natur 1904 Aequorea pensilis Zygocanna diploconus Aequorea forskalea Zygocanna diploconus |