From Williams et al., 2017:

[Cavatodissiliodinium, Feist-Burkhardt and Monteil, 2001, p. 50, 52

Type: Cavatodissiliodinium hansgochtii, Feist-Burkhardt and Monteil, 2001 (fig.2, nos.6-7; fig.18, nos.7-8; fig.19, no.2)]

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Original description: [Feist-Burkhardt and Monteil, 2001]:

Diagnosis:
Shape: Cysts proximate, subspherical.
Wall reationships: Cavate.
Wall features: Psilate to ornamented.
Archaeopyle: Precingular, compound, variable, formed by the loss of up to 5 precingular paraplates (1”-5”); opercular pieces generally free, adherent partially detached or adherent in place. Apical cap remains attached to the hypocyst by an isthmus consisting of the paraplates 6”, as, and, generally, 1”.
Paratabulation: Either indicted by archaeopyle only, when precingular paraplates are lost, separated or displaces, or partially indicated by parasutural features. Epicystal paratabulation gonyaulacacean, partial paratabulation formula: ?pr, 4’, 0-2a, 6”. as. Precingular paraplates of subequal size and characteristic shape, 3”with rounded adcingular angles and the others with one, dorsally directed stalk-like elongate edge in adcingular position (“stalked” precingular paraplates). Hypocystal paratabulation not determined.
Torsion: Not determined.
Paracingulum: Not marked or slightly indicated.
Parasulcus: Not marked.
Size: Intermediate.