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Hystrichosphaeridium capitatum

Hystrichsphaeridium capitatum Cookson and Eisenack, 1960, p.252

NOW Barbatacysta. Originally Hystrichosphaeridium, subsequently Prolixosphaeridium, thirdly Tenua Eisenack, fourthly Batiacasphaera, fifthly (and now) Barbatacysta.

Holotype: Cookson and Eisenack, 1960b, pl.39, fig.9; Fauconnier and Masure, 2004, pl.66, fig.1.
Locus typicus: SSW of Broome, Canning Basin, Australia
Stratum typicum: Oxfordian-Kimmeridgian

Original descripton: Cookson and Eisenack, 1960, p.252
Shell cy;indrical with rounded ends, densely covered with short, solid appandages with capitate or somewhat bifurcateends and an opening by the complete detachment of one end of the shell.
Dimensions: Holotype: 64 µm long, 42 µm broad, overall 72 x 50 µm. Range of shell 64-66 x 28-44 µm.

Affinities:
Cookson and Eisenack, 1960, p.252: H. capitatum seems distinct from all described species of Hystrichosphaeridium with elongate shells; the appandages show some similarity to those of H. intermedia? O.Wetzel.
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