Tanyosphaeridium isocalamum

isocalamum (Deflandre and Cookson, 1955, p.272, pl.2, figs.7–8; text-figs.30–35) Davey and Williams, 1969, p.7.  Holotype: Deflandre and Cookson, 1955, pl.2, figs.7–8; Fauconnier and Masure, 2004, pl.78, figs.5–8.  Originally Hystrichosphaeridium, subsequently (and now) Tanyosphaeridium.  Age: Early Cretaceous.

Parent: Tanyosphaeridium