Wilsonidium aechmophorum

"?aechmophorum" (Benedek, 1972, p.41, pl.5, figs.7,11; text-fig.17) Lentin and Williams, 1976, p.139.  Emendation: Benedek and Sarjeant, 1981, p.340-341, as Gerlachidium aechmophorum.  Holotype: Benedek, 1972, pl.5, fig.7; text-fig.17; Benedek and Sarjeant, 1981, figs.7,9, nos.1-2; Fensome et al., 1993a, figs.1-2 - p.887.  NOW Gerlachidium.  Originally Lejeunia (generic name illegitimate), subsequently Wilsonidium?, thirdly Lejeunecysta, fourthly (and now) Gerlachidium.  Questionable assignment: Lentin and Williams (1976, p.139).  Age: mid-late Oligocene.

Parent: Wilsonidium