Streptonigrin is an aminoquinone antitumor and antibacterial antibiotic produced by "Streptomyces flocculus". The exact cause of the disorder and its pathogenic effect on the flocculus is unknown. The flocculus is relatively large on most ankylosaurids. The flocculus also plays a role in keeping the body oriented in space. The flocculus is most important for the pursuit of movements with the eyes. Like other parts of the cerebellum, the flocculus is involved in motor control. The flocculus is contained within the flocculonodular lobe which is connected to the cerebellum. The flocculus sends out neural signals that produce small, automatic movements in the eye muscles. Flocculus is the diminutive form of the Latin word for a tuft of wool&colon; "floccus".