Hystrichosphaeridium colligerum Deflandre and Cookson, 1955; Emendations: Cookson, 1965a, p.86 and Goodman and Witmer, 1985, p.77-78, both as Diphyes colligerum.

Now Diphyes. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Diphyes.
Taxonomic junior synonym: Diphyes pseudoficusoides according to Fensome et al. (2009, p.30).

Holotype: Deflandre and Cookson, 1955, pl.7, fig.3
Hypotypes: Cookson, 1965, pl.9, fig.1-2
Locus typicus: SE of mouth of Gellibrand River, Victoria, Australia
Stratum typicum: Early Eocene

Original description: Deflandre and Cookson 1955, p. 278-279
Diagnosis: Shell globular, almost spherical; processes numerous, tubular, straight or slightly flexuous, with a conical base and a closed capitate or slightly
furcate apex. At one pole of the shell there is a large, hollow, cylindro-conical outgrowth closed by a rounded conical apex. This outgrowth, like the small processes, does not communicate with the interior of the shell. It is frequently ornamented distally with a circle of short, blunt, hollow, conical knobs. Membrane of shell finely granular.
Dimensions: holotype: diameter of shell 33 Ám, overall diameter 56 Ám, large process 20 by 13 Ám, small processes c. 13 Ám long. Range: shell 30-33 Ám, overall diameter: 56-59 Ám, appendages c. 13 Ám.