Genus Fibrophrys Takahashi et al., 2016
Diagnosis: Cell shape nearly orbicular or broadly elliptical, asymmetric to the axis connecting the two antipolar ends. Fine filamentous, branching ectoplasmic elements emanate from both polar ends of the cell and are spread evenly, similar to a fibrous root system of a plant. An internal membrane system exists in the filamentous ectoplasmic elements. In the body of the organism, generally one (but up to five) orange, amber, or colorless lipid bodies are immersed. In colonies, cells maintain an equal distance using the ectoplasmic elements and rarely make direct contact with each other. Gliding motility is not observed, and cells move over a limited distance.
Type species: Fibrophrys columna.