Keywords: Haeckel Phaeodaria 1.jpg Circogonia icosahedra Circogonia icosahedra <small> Haeckel </small> Circogonia icosahedra <small>Haeckel 1887</small> 1a opening of shell Circostephanus coronarius <small> Haeckel </small> Circostephanus coronarius <small>Haeckel 1887</small> Haeckeliana porcellana <small> John Murray </small> Haeckeliana porcellana <small>Murray 1885</small> 3a pore circle without spines Cortinetta tripodiscus <small> Haeckel </small> Cortinetta tripodiscus Medusetta tetranema <small> Haeckel </small> Medusetta tetranema <small>Haeckel 1887</small> Challengeria murrayi <small> Haeckel </small> Protocystis murrayi <small> Haeckel 1887 </small> Kunstformen der Natur 1904 plate 1 Phaeodaria see http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_001_300 html here http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_001_text_1_200 html here and http //caliban mpiz-koeln mpg de/haeckel/kunstformen/high/Tafel_001_text_2_200 html here creator Ernst Haeckel 1904 public domain due to age File Circogoniaicosahedra ekw jpg PD-old Kunstformen der Natur 1904 Radiolaria |