Plethysyrinx lemniscata

"*lemniscata" (Corradini, 1973, p.152–153, pl.22, figs.4a–b,5; pl.33, figs.2,4; pl.39, fig.2) Sarjeant, 1981, p.106.  Holotype: Corradini, 1973, pl.22, fig.5; Fensome et al., 1995, fig.3 — p.1601.  NOW Disphaerogena.  Originally Cordosphaeridium, subsequently Cordosphaeridium?, thirdly Plethysyrinx, fourthly Cyclapophysis, fifthly (and now) Disphaerogena.  Age: Late Cretaceous–Paleocene.

Parent: Plethysyrinx