From Fensome et al., 2019:
Microdinium reticulatum Vozzhennikova, 1967, p.96–97, pl.37, figs.2–5. Holotype: Vozzhennikova, 1967, pl.37, fig.2; Lentin and Vozzhennikova, 1990, text-fig.62; lost according to Lentin and Vozzhennikova (1990, p.107). Originally (and now) Microdinium, subsequently Microdinium?. Questionable assignment: Stover and Evitt (1978, p.66) — however, Lentin and Vozzhennikova (1990, p.107) included the species in Microdinium without question. According to Lentin and Vozzhennikova (1990, p.107), no potential lectotype is available and the name should be restricted to the type. Age: Eocene.

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Lectotype: none available, according to Lentin and Vozzhennikova, 1990
Locus typicus: Novosibirsk, W Sibiria
Stratum typicum: Eocene
Translation Vozzhennikova, 1967: Lees in Sarjeant, 1971, p. 147

Original description: Vozzhennikova, 1967, p. 96-97
Theca oval; epitheca smaller than hypotheca. Arrangement of plates as in type. Surface of theca has a reticulate sculpturing, which may partially or complately cover the plates. Short, slender, transversely striated processes delimit the plates from each other.
Dimensions: holotype: length 36.6 µm, breadth 28.8 µm, width of transverse furrow 5 µm, width of processes 2.5 µm; in other specimens - length 31-43.8 µm, breadth 24.6-30.0 µm, width of furrow 4.6-8 µm, width of margin 2.4 µm.

Affinities:Vozzhennikova, 1967, p. 97: This species is unique in having reticulate sculpturing and in the form of the processes.