From Fensome et al., 2019:
Exochosphaeridium? caputmedusae Cookson and Eisenack, 1974, p.68, pl.25, fig.16. Holotype: Cookson and Eisenack, 1974, pl.25, fig.16. Originally Exochosphaeridium, subsequently (and now) Exochosphaeridium?. Questionable assignment: Stover and Evitt (1978, p.154). Age: Senonian.

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Original diagnosis: Cookson and Eisenack, 1974, p.68
Shell in outline oval, covered densely and on all sides with protuberances, which consist of basally broadly attached, thin and delicate membranes. These membranes, as partially broad and expanded spanning-membranes, can connect adjacent processes and can also penetrate themselves [shown as such] approximately in their center line, so that cruciform or T-shaped cross-section are present. [If "sich" should have read "sie", themselves would read them, namely the processes]. All processes are furcated in an irregular manner and terminate in long, lobe-like tips.
Dimensions: Shell about 70 x 58 µm, overall about 146 x 114 µm; length of processes up to about 44 µm. One specimen.
Occurrence: Madura No. 1 bore, at 1073-1104 ft.