From Fensome et al., 2019:
Echinocysta Xu Jinli et al., 1997, p.119,154, pl.16, figs.13–14; pl.17, fig.7; pl.55, figs.4–5; text-fig.13. Holotype:
Xu Jinli et al., 1997, pl.16, figs.13–14. Age: Middle–Late Eocene.

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