myxosphaera myxosphaera myxosphaera is a radiolarian genus in the collosphaeridae. the genus may contain bioluminescent species. it is a genus of colonial radiolarians (as opposed to solitary). myxosphaera scientific classification domain: eukaryota clade: diaphoretickes clade: sar phylum: retaria class: polycystinea order: nassellaria family: collozoidae subfamily: collosphaeridae genus: myxosphaerabrandt, 1885 species see text species the following species are known (incomplete list): myxosphaera coerulea haeckel