Very small Toweius (1.8–3.0μm) with relatively wide central area (width similar to or slightly greater than the rim) spanned by a grill formed from radial bars that merge to form a central longitudinal bar or plate, which may be perforate. [Bown 2016]
This species has not been unambiguously identified in LM due to its small size, but is likely one of the taxa commonly informally grouped as small Toweius. [Bown 2016]
Distinguished from other Toweius by the small size and central area grill predominantly composed of radial, lath-like bars. Somewhat similar to Eocene specimens described as Cyathosphaera martinii Hay & Towe, 1962, but T. reticulum has thicker central area bars and a central longitudinal structure with pores. In addition, the generic affinity of C. martini is uncertain and it may be a small reticulofenestrid. [Bown 2016]