Millioudodinium unicornum Kar, 1985; Emendation: Jain and Garg, 1991, p.72–73, as Apteodinium unicornum

Now Apteodinium. Originally Millioudodinium, subsequently (and now) Apteodinium.

Holotype: Kar, 1985, pl.49, fig.8
Age: Miocene

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Original description: [Kar, 1985, p. 206]:

Millioudodinium unicornum sp. nov.
Pl. 49, fig. 8

Diagnosis – Proximate cysts, subspherical to ellipsoidal, 51-72 x 48-70 µm, apical horn distinct. Wall conied, sometimes interspersed with grana, archaeopyle precingular, paracingulum generally indicated by parallel transverse equatorial ridges.

Comparison – Millioudodinium apionis (Cookson & Eisenack) Stover & Evitt (1978) resembles the present species in possessing a distinct apical horn but is separated by its smooth wall, a shell twice as long as broad and its bigger size (105 x 57 µm).
M. tenuitabulatum (Gerlach) Stover & Evitt (1978) has a small apical horn and granulate wall.

Holotype – Pl. 49, fig. 8; size 60 x 59 µm; slide no. 8267/12.

Type locality – Aida, Khari Nadi Formation, Miocene, Kachchh.

Occurrence – Aida, Khari Nadi Formation, Kachchh.