Tuscaridium

Tuscaridium is a genus of phaeodarian, (formerly thought to be radiolarians). They consume particles that sink quickly through water which would otherwise reach the deep ocean. Tuscaridiums make cellular colonies (they make a colony like a pyrosome ). The genus contains bioluminescent species. It one of two known bioluminescent phaeodarean genera, the other being Aulosphaera.

Species
The following species are known (incomplete list):
 * Tuscaridium cygneum
 * Tuscaridium cygenum