Keywords: Haeckel Stauromedusae.jpg top right Tesserantha connecteus <small> Haeckel </small> Tesserantha connectens <small>Haeckel 1880</small> medusa side view right Tesserantha connecteus <small> Haeckel </small> Tesserantha connectens <small>Haeckel 1880</small> medusa bottom view center Haliclystus auricula <small> Clark </small> Haliclystus auricula <small> Rathke 1806 </small> medusa side view top left Haliclystus auricula <small> Clark </small> Haliclystus auricula <small> Rathke 1806 </small> medusa side view with umbrella folded back bottom left Haliclystus auricula <small> Clark </small> Haliclystus auricula <small> Rathke 1806 </small> medusa bottom view left Lucernaria bathyphila <small> Haeckel </small> Lucernaria bathyphila <small>Haeckel 1880</small> medusa cross-section of stalk bottom right Lucernaria pyramidalis <small> Haeckel </small> Lucernaria quadricornis <small>O F Müller 1776</small> medusa bottom view Kunstformen der Natur 1904 plate 48 Stauromedusae see http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_048_300 html here http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_048_text_1_200 html here and http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_048_text_2_200 html here creator Ernst Haeckel 1904 public domain due to age PD-old Kunstformen der Natur 1904 Stauromedusae Tesserantha connectens Haliclystus auricula Lucernaria bathyphila Lucernaria quadricornis |