#mircroscopic

Jean Comandon, {1910} Spirochoeta pallida (de la syphilis)

German biologist, naturalist, philosopher, physician, professor and artist Ernst Haeckel (1834-1919) focus for many years was an intricate, single-celled organism known as a Radiolarian. In his initial work with them, he found, named and picted over 150 diverse species. He would go on to document thousands more ... Radiolarians (also Radiolaria) are amoeboid protozoa (diameter 0.1-0.2 mm) that produce intricate mineral skeletons, typically with a central capsule dividing the cell into inner and outer portions, called endoplasm and ectoplasm. They are found as zooplankton throughout the ocean, and their skeletal remains cover large portions of the ocean bottom as radiolarian ooze. Due to their rapid turn-over of species, they represent an important diagnostic fossil found from the Cambrian onwards. Some common radiolarian fossils include Actinomma, Heliosphaera and Hexadoridium.