Acanthometra Sicula Haeckel
Haeckel, Ernst
<a href="//commons.wikimedia.org/wiki/File:Die_Radiolarien_(Rhizopoda_radiaria)_(Plate_XVII)_(8591418825).jpg" title="File:Die Radiolarien (Rhizopoda radiaria) (Plate XVII) (8591418825).jpg">File:Die_Radiolarien_(Rhizopoda_radiaria)_(Plate_XVII)_(8591418825).jpg</a>