cystoid

Functional morphology and evolution of the cystoid Echinosphaerites.

In late cases cystoid macular edema sometimes develops which can further lead to macular destruction.

Cystoid macular edema (CME) involves fluid accumulation in the outer plexiform layer secondary to abnormal perifoveal retinal capilary permeability.

Most of the state's cystoid fossils are preserved in deposits that formed in that place and time Jaws left by marine worms are even more common from the Silurian of northeastern Illinois than they were back in the Ordovician.

Pleurocystites (meaning rib bag or side bladder) is a genus of rhombiferan echinoderm (a cystoid) that lived in the Late Ordovician.

Echinosphaerites is a genus of rhombiferan echinoderm (a cystoid) that lived in the Early and Middle Ordovician of North America and Europe (Bockelie, 1981).