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Exochosphaeridium multifurcatum
From Fensome et al., 2019:
Exochosphaeridium multifurcatum (Deflandre, 1937b, p.76, pl.16 [also labelled pl.13], figs.1–3) Masure in Fauconnier and Masure, 2004, p.270. Emendation: Masure in Fauconnier and Masure, 2004, p.270, as Exochosphaeridium multifurcatum.
Holotype: Deflandre, 1937b, pl.16 (also labelled pl.13), figs.1–2; Fensome et al., 1991, figs.1–2 — p.691; fig.1 — p.693; Fensome et al., 1993a, fig.1 — p.1261; figs.1–2 — p.1265; Fauconnier and Masure, 2004, pl.37, figs.10–11. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly Cleistosphaeridium?, fifthly Heterosphaeridium, sixthly (and now) Exochosphaeridium. Age: Late Cretaceous.
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Original description: Deflandre, 1937, p. 76: Hystrichosphaeridium? multifurcatum
This is a collective species, susceptible to being later dismembered. Thus, under this name, I include all globular Hystrichosphaeridium covered with numerous branched processes, whose height does not exceed one quarter of the diameter of the shell and is very often less. Generally all the processes are branched, but the type, illustrated here, shows some with simple pointed extremities. The surface is entirely reticulate, or covered with a sort of vermiculate ornamentation which cannot be analysed except at very high magnification.
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Emended description Fauconnier and Masure, 2004
Emended Diagnosis:
Proximochorate cyst, the central body of which is subspherical to ellipsoid in shape. The wall is formed by a fibropunctate autophragm. The non-paratabularly distributed processes are simple or divided, and their distal ends are capitate. Paratabulation is indicated only by the archaeopyle and certain alignments of processes. The precingulate archaeopyle is type P (3"). The operculum is free.
Exochosphaeridium multifurcatum (Deflandre, 1937b, p.76, pl.16 [also labelled pl.13], figs.1–3) Masure in Fauconnier and Masure, 2004, p.270. Emendation: Masure in Fauconnier and Masure, 2004, p.270, as Exochosphaeridium multifurcatum.
Holotype: Deflandre, 1937b, pl.16 (also labelled pl.13), figs.1–2; Fensome et al., 1991, figs.1–2 — p.691; fig.1 — p.693; Fensome et al., 1993a, fig.1 — p.1261; figs.1–2 — p.1265; Fauconnier and Masure, 2004, pl.37, figs.10–11. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly Cleistosphaeridium?, fifthly Heterosphaeridium, sixthly (and now) Exochosphaeridium. Age: Late Cretaceous.
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Original description: Deflandre, 1937, p. 76: Hystrichosphaeridium? multifurcatum
This is a collective species, susceptible to being later dismembered. Thus, under this name, I include all globular Hystrichosphaeridium covered with numerous branched processes, whose height does not exceed one quarter of the diameter of the shell and is very often less. Generally all the processes are branched, but the type, illustrated here, shows some with simple pointed extremities. The surface is entirely reticulate, or covered with a sort of vermiculate ornamentation which cannot be analysed except at very high magnification.
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Emended description Fauconnier and Masure, 2004
Emended Diagnosis:
Proximochorate cyst, the central body of which is subspherical to ellipsoid in shape. The wall is formed by a fibropunctate autophragm. The non-paratabularly distributed processes are simple or divided, and their distal ends are capitate. Paratabulation is indicated only by the archaeopyle and certain alignments of processes. The precingulate archaeopyle is type P (3"). The operculum is free.