Plate 6, Figs. 14, 18, 22
Holotype: Plate 6, Figure 18
Type Locality: early Hauterivian, Speeton Clay Formation, Speeton. Holotype: Slide D2A(3), E.F. U39.0.

Derivation of Name: From the Latin in-, not and aequalis, equal- in reference to the very unequal antapical horns of this species.

Diagnosis: A smooth, elongate pareodinioid dinocyst with a long, sharply-tapering, blunt-ended apical horn. The antapex is produced into a fairly long left antapical horn and a much attenuated right antapical. The antapical horns are broad proximally, hollow and taper to a rounded termination; distally, the left antapical horn usually bears a short, solid, slender spine. The archeopyle is apical, leaving a deep sulcal notch on opercular detachment.

Dimensions: Holotype (complete): Length - 132μm. Width - 35μm
Overall: Complete: 147 (139) 132 μm × 35 (35) 35 μm
Operculum detached: 91 (139) 76 μm × 41 (38) 35 μm
Specimens Measured: 6

Remarks: As with Batioladinium mucronatum n. sp., the antapical horns of Batioladinium inaequalis are its main distinguishing feature; the very significant difference in antapical horn development is striking. The presence of a short, solid spine at the left antapical horn termination is also unusual.
The observed range of Batioladinium inaequalis at Speeton was between Beds D2D and D2A (early Hauterivian, amblygonium Zone).