Tiny radiolarians by the name of Sticholonche zanclea have complex exoskeletons built from silica or strontium sulfate and can take on a myriad of strange forms. Dead radiolarians sink to the bottom ...
On the coast of Sicily, a man sits hunched over a microscope peering at what look to be grains of sand. It's the late 1870s, and these specimens are mineral-shelled protozoans called radiolarians ...
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